原著論文
2025
Attenuation correction for C-14 quantification by bremsstrahlung measurement with a germanium detector. M. Tsuda, T. Moro, M. Yamaguchi, F. Sato, Y. Nagao, T. Yabe, Y.-G. Yin, Y. Miyoshi, N. Suzui, K. Enomoto, J. Furukawa, T. Kamiya, H. Sakurai, N. Kawachi, H. Watabe. Japanese Journal of Applied Physics (in press) [DOI: 10.35848/1347-4065/add5b0]
論文の概要 
光合成産物の植物内動態を定量的に把握することは、作物の生産効率の向上や持続可能な食料供給システムの構築において重要な課題である。炭素-14（C-14）を用いた放射能定量法は、こうした動態の可視化に有効な手法であるが、低エネルギーβ線に由来する制動X線の減衰補正が測定精度を左右する重要な要素となる。特に、果実などの厚みを有する植物組織を対象とする場合には、吸収体によるX線の減衰を定量的に補正する技術の確立が求められている。
本研究では、C-14のβ線から発生する制動X線のエネルギースペクトルを測定し、異なる厚さのソーダライムガラスを吸収体とした場合の影響を評価した。さらに、モンテカルロシミュレーションにより得られた結果をもとに、エネルギー領域ごとのカウント比を用いた新たな減衰補正法を提案した。提案手法では、25≤E≤60 keVの低エネルギー成分と60≤E≤160 keVの高エネルギー成分のカウント比から吸収体厚さを推定し、その値に基づき近似式を用いて全カウント値の減衰補正を行うことで、線源放射能の推定を可能とした。
さらに、実験結果とシミュレーション結果を比較することで、厚さ推定および放射能推定の精度を定量的に評価した。その結果、補正後の放射能は厚さによる影響が大きく抑制され、提案手法の有効性が確認された。
本成果は、β線に由来する制動放射線を利用した非侵襲的なC-14線源の定量技術の基盤を示すものであり、今後、植物試料など吸収体の厚みや構造が未知な対象への応用が期待される。本研究成果は、Japanese Journal of Applied Physics に2025年5月7日付で掲載された。（津田RA、山口上席研究員、長尾主任技術員、矢部学振PD、尹主幹研究員、三好主任研究員、鈴井上席研究員、榎本主任技術員、河地PL／RIイメージング）
Patient CT-based simulation study of secondary-electron-bremsstrahlung imaging for range verification in proton therapy: Comparison with prompt gamma and PET imaging for simplified proton pencil beam and SOBP irradiation scenarios. T. Yabe, M. Nitta, M. Yamaguchi, M. Pinto, N. Kawachi, K. Parodi. Physics in Medicine & Biology (in press) [DOI: 10.1088/1361-6560/add4b7]
論文の概要
陽子線治療は高い線量集中性を有する一方で、患者体内の照射位置のずれが、治療効果の低下や正常組織へのダメージを引き起こすリスクがあるため、治療ビームモニタリング技術が臨床現場で求められている。現在、陽子線治療におけるモニタリング手法として、即発ガンマ線計測法（PG: prompt gamma）や陽電子放出断層撮影法（PET: positron emission tomography）に加え、二次電子制動放射線計測（SEB: secondary electron bremsstrahlung）に着目した新たな手法が提案されている。しかしながら、SEBに関する先行研究の多くはファントムを用いた基礎的な照射実験およびシミュレーションにとどまっており、実臨床を想定した条件下での検証は十分に行われていない。
本研究では患者CTデータをもとに陽子線治療のシミュレーションを実施し、SEBの臨床応用の可能性を検討した。モンテカルロコードPHITSを用いて、脳・頭頸部・前立腺腫瘍の3部位を対象に、陽子線照射により体内で発生するSEBの物理特性を計算し、既存のモニタリング手法であるPGおよびPETの特性と比較した。その結果、SEBの発生量はPGやPETよりも高く、骨のようなCT値の高い部位において、顕著な発生が確認された。また、体内での減弱の影響を受けつつも、ビームモニタリングの実現に必要な信号量が体外から計測可能であることが示された。これらの特性を踏まえ、SEBは浅部に位置する腫瘍への照射に対して有効なモニタリング手法して、臨床応用の可能性が期待される。
本研究は実患者データに基づくシミュレーションを通じて、SEBの体内特性を明らかにし、臨床応用の可能性を初めて検討したものであり、今後の臨床応用に向けた重要な指針となる成果である。本成果は、国際誌 Physics in Medicine and Biology に5月8日付で掲載された。（矢部客員研究員、山口上席研究員、河地PL／RIイメージング）
RAPTOR-AI: An open-source AI powered radiation protection toolkit for radioisotopes. H. Watabe, P. K.N. Yu, D. Krstic, D. Nikezic, K. M. Kim, T. Yamaya, N. Kawachi, H. Tanaka, Z. Jovanovic, A.K.F. Haque, M. R. Islam, G. Tse, Q. Lee, M. S. Beni. Applied Radiation and Isotopes 221: 111797, 2025 [DOI: 10.1016/j.apradiso.2025.111797]
Uncertainty evaluation in simulation study on range-shift estimation due to statistical noise in secondary electron bremsstrahlung from a small number of carbon ions. M. Tsuda, M. Yamaguchi, T. Yabe, Y. Nagao, N. Kawachi, M. Sakai, T. Kamiya, W. Kada, H. Watabe. Japanese Journal of Applied Physics 64: 047001, 2025 [DOI: 10.35848/1347-4065/adc21b]
論文の概要
粒子線治療は、高い線量集中性によりがんの高精度治療を可能にする一方で、患者の体動や解剖学的変化により、照射位置にずれが生じる可能性がある。こうした飛程ずれをリアルタイムに可視化し、治療の安全性を高める技術の開発が求められている。我々はこれまで、ピンホール型X線カメラを用いた粒子線イメージングおよび飛程推定手法を提案し、ビーム飛跡の可視化に取り組んできたが、推定精度に関する不確かさの定量的検証は行われていなかった。
そこで本研究では、X線カメラを含む実験系をモンテカルロシミュレーションで再現し、照射される炭素イオン数の違いが飛程推定精度に与える影響を評価した。具体的には、均一なアクリル標的に炭素イオンビームを照射し、カメラに入射する二次電子制動放射線の画像を取得した。さらに、取得画像に対して、新たに提案した飛程推定法を適用し、各条件下での飛程推定値と実際のビーム飛程との差から、不確かさを算出した。
その結果、入射イオン数が108の条件では不確かさは1.4 mm、107では4.4 mmであることが示され、臨床的にも用いられる低線量条件下での限界が明らかとなった。今後は、X線カメラのコリメータ形状や配置の最適化、高感度化を図ることで、不確かさのさらなる低減を目指す。また、マルチピンホールコリメータの導入や、深部腫瘍への応用に向けた減衰補正法の検討も進める予定である。本成果は、粒子線治療におけるビームモニタリング技術の臨床応用に向けて装置開発の現状と課題を明示した点で意義があり、Japanese Journal of Applied Physicsに3月18日付で掲載された。（津田RA、山口上席研究員、矢部学振PD、長尾主任技術員、河地PL／RIイメージング）
Imaging of therapeutic carbon-ion beams in a human-head phantom measuring prompt X-rays. M. Yamaguchi, S. Yamamoto, M. Kitano, T. Yabe, T. Akagi, J. Kataoka, K. Kamada, A. Yoshikawa, Y. Nagao, M. Tsuda, H. Watabe, N. Kawachi. Japanese Journal of Applied Physics 64: 027001, 2025 [DOI: 10.35848/1347-4065/adae6b]
論文の概要
粒子線がん治療の更なる安全性向上には、ビームの照射深度をリアルタイムでモニタリングする技術が有用とされている。われわれは、電子制動放射線を計測する独自のイメージング手法を開発してきた。これまで、単純形状の水ファントムを用いて飛程誤差の検出能力をX線カメラで評価してきた。しかし、人体は異なる密度や元素組成を持つ不均質な組織で構成されているため、人の治療に近い条件での検証が求められていた。そこで本研究では、人体構造を忠実に再現できるシミュレーション環境を構築し、頭部照射時の電子制動放射線計測の有効性を検証した。さらに、頭部ファントムを用いた実験と比較し、ビーム飛程モニタリングの精度を評価した。
シミュレーションでは、Monte Carlo法を用いてCT画像から生成した頭部モデルに炭素イオンビームを照射し、即発X線の放射特性を詳細に解析した。その結果、頭頂部から側頭部にかけて広範囲（約±135度の角度範囲）でビームの飛跡を明瞭に捉えられることが示された。これを実験的に検証するため、兵庫県立粒子線治療センターにおいて、シミュレーションと同様のビームエネルギー設定で照射を行い、X線カメラを用いて頭頂部および側頭部からの測定を実施した。実験結果はシミュレーションと良く一致し、1.8 cmの飛程変化を識別可能であることが確認された。
本研究の成果により、リアルタイムでの飛程誤差の検出と線量のずれの最小化が可能となることが示された。今後はX線カメラの配置を最適化するとともに、多方向からのデータ統合や画像再構成技術の改良を進め、計測精度の向上と臨床応用を目指す。この技術により、臨床現場での即時的な飛程補正が可能となり、治療精度向上や副作用軽減に寄与するものと期待され、 Japanese Journal of Applied Physicsに2月13日に掲載された。（山口上席研究員、矢部学振PD、長尾主任技術員、津田RA、河地PL/RIイメージング）
Diurnal Regulation of SOS Pathway and Sodium Excretion Underlying Salinity Tolerance of Vigna marina. Y. Noda, F. Wang, S. Chankaew, H. Ariga, C. Muto, Y. Iki, H. Ohashi, Y. Takahashi, H. Sakai, K. Iseki, E. Ogiso-Tanaka, N. Suzui, Y.-G. Yin, Y. Miyoshi, K. Enomoto, N. Kawachi, P. Somta, J. Furukawa, N. Tomooka, K. Naito. Plant, Cell & Environment 48: 3925, 2025 [DOI: 10.1111/pce.15402]
2024
Sink Strength Dynamics Based on Potential Growth and Carbohydrate Accumulation in Strawberry Fruit. H. Nakai, D. Yasutake, K. Hidaka, Y. Miyoshi, T. Eguchi, G. Yokoyama, T. Hirota. HortScience 59: 1505, 2024 [DOI: 10.21273/HORTSCI18013-24]
Development of a GAGG gamma camera for the imaging of prompt gammas during proton beam irradiation. S. Yamamoto, T. Yamashita, Y. Kobashi, T. Yabe, K. Nakanishi, T. Akagi, M. Yamaguchi, N. Kawachi, K. Kamada, A. Yoshikawa, J. Kataoka. Physica Medica 127: 104847, 2024 [DOI: 10.1016/j.ejmp.2024.104847]
Development of a compact multiprobe system for monitoring positron-emitting tracers in plant stems. Y. Nagao, N. Suzui, Y.-G. Yin, Y. Miyoshi, Y. Noda, K. Enomoto, M. Tsuda, T. Yabe, H. Watabe, M. Yamaguchi, N. Kawachi. Journal of Instrumentation 19: P04023, 2024 [DOI: 10.1088/1748-0221/19/04/P04023]
Construction and initial performance evaluation of a newly developed plant PET system. S. Yamamoto, H. Watabe, M. Yamaguchi, N. Suzui, N. Kawachi, J. Kataoka. Journal of Instrumentation, Journal of Instrumentation 19: T04002, 2024 [DOI: 10.1088/1748-0221/19/04/T04002]
A triple-imaging-modality system for simultaneous measurements of prompt gamma photons, prompt x-rays, and induced positrons during proton beam irradiation. S. Yamamoto, H. Watabe, K. Nakanishi, T. Yabe, M. Yamaguchi, N. Kawachi, K. Kamada, A. Yoshikawa, M. Miyake, K. S Tanaka, J. Kataoka. Physics in Medicine & Biology 69: 055012, 2024 [DOI: 10.1088/1361-6560/ad25c6]
A large field-of-view angled panel detector for the development of a plant PET system. S. Yamamoto, H. Watabe, M. Yamaguchi, N. Suzui, N. Kawachi, J. Kataoka. Journal of Instrumentation 19: T01002, 2024 [DOI: 10.1088/1748-0221/19/01/T01002]
Estimating blurless and noise-free Ir-192 source images from gamma camera images for high-dose-rate brachytherapy using a deep-learning approach. K. Nakanishi, S. Yamamoto, T. Yabe, K. Yogo, Y. Noguchi, K. Okudaira, N. Kawachi, J. Kataoka. Biomedical Physics & Engineering Express 10: 015006, 2024 [DOI: 10.1088/2057-1976/ad0bb2]
2023
ADP-glucose pyrophosphorylase genes are differentially regulated in sugar-dependent or –independent manners in tomato (Solanum lycopersicum L.) fruit. Y.-G. Yin, A. Sanuki, Y. Goto, N. Suzui, N. Kawachi, C. Matsukura. Plant Biotechnology, 2023 [DOI: 10.5511/plantbiotechnology.23.1004a]
Optimization of a YAP(Ce) prompt X-ray camera for imaging with spot scanning proton beams at clinical dose levels. S. Yamamoto, T. Yamashita, Y Kobayashi, T. Yabe, T. Akagi, M. Yamaguchi, N. Kawachi, K. Kamada, A. Yoshikawa, J. Kataoka. Journal of Instrumentation 18: T12005, 2023 [DOI: 10.1088/1748-0221/18/12/T12005]
Non-invasive 11C-imaging revealed no change in the dynamics of photosynthates translocation of strawberry in response to increasing daylight integrals under low light conditions. Y. Miyoshi, K. Hidaka, Y.-G. Yin, N. Suzui, K. Kurita, N. Kawachi. Acta Horticulturae, 1381: 89, 2023 [DOI: 10.17660/ActaHortic.2023.1381.12]
Development of DynamicMC for PHITS Monte Carlo package. H. Watabe, T. Sato, K. Ngok Yu, M. Zivkovic, D. Krstic, D. Nikezic, K. Min Kim, T. Yamaya, N. Kawachi, H. Tanaka, A. K. F. Haque, M. R. Islam, M. S. Beni. Radiation Protection Dosimetry, ncad278, 2023 [DOI: 10.1093/rpd/ncad278]
Starch-dependent sodium accumulation in the leaves of Vigna riukiuensis. Y. Noda, A. Hirose, M. Wakazaki, M. Sato, K. Toyooka, N. Kawachi, J. Furukawa, K. Tanoi, K. Naito. Journal of Plant Research 136: 705, 2023 [DOI: 10.1007/s10265-023-01470-8]
Visualization of the initial radiocesium dynamics after penetration in living apple trees with bark removal using a positron-emitting 127Cs tracer. Y. Noda, T. Yoshihara, N. Suzui, Y.-G. Yin, Y. Miyoshi, K. Enomoto, N. Kawachi. Applied Radiation and Isotopes 110859, 2023 [DOI: 10.1016/j.apradiso.2023.110859]
Translocation of 11C-labelled photosynthates to strawberry fruits depends on leaf transpiration during twilight. Y. Miyoshi, J. Mincke, J. Vermeiren, J. Courtyn, C. Vanhove, S. Vandenberghe, N. Kawachi, K. Steppe. Environmental and Experimental Botany 211: 105353, 2023 [DOI: 10.1016/j.envexpbot.2023.105353]
Non-invasive range-shift measurement for therapeutic carbon-ion beams by detecting SEB with a CdTe imager. M. Tsuda, M. Yamaguchi, H. Toyokawa, T. Yabe, Y. Nagao, N. Kawachi, R. Satori, M. Sakai, W. Kada, T. Kamiya. Journal of Instrumentation 18: C04008, 2023 [DOI: 10.1088/1748-0221/18/04/C04008]
Simultaneous imaging of prompt gamma photons and prompt X-rays during irradiation of proton beams to human torso phantom at clinical dose level. S. Yamamoto, T. Yamashita, Y Kobayashi, T. Yabe, T. Akagi, M. Yamaguchi, N. Kawachi, K. Kamada, A. Yoshikawa, H. Yokokawa, M. Sagisaka, J. Kataoka. Journal of Instrumentation 18: P07046, 2023 [DOI: 10.1088/1748-0221/18/07/P07046]
Simultaneous imaging of luminescence and prompt X-rays during irradiation with spot-scanning proton beams at clinical dose level. S. Yamamoto, T. Yamashita, Y. Kobayashi, T. Yabe, T. Akagi, M. Yamaguchi, N. Kawachi, K. Kamada, J. Kataoka. Biomedical Physics & Engineering Express 9: 045031, 2023 [DOI: doi.org/10.1088/2057-1976/acdf61]
Hybrid imaging of prompt x-rays and induced positrons using a pinhole gamma camera during and after irradiation of protons. S. Yamamoto, H. Watabe, K. Nakanishi, T. Yabe, M. Yamaguchi, N. Kawachi, K. Kamada, A. Yoshikawa, M. R. Islam, M. Miyake, S. K. Tanaka, J. Kataoka. Physics in Medicine & Biology 68: 115015, 2023 [DOI: 10.1088/1361-6560/acd2a2]
Prompt X-ray imaging during irradiation with spread-out Bragg peak (SOBP) beams of carbon ions. S. Yamamoto, T. Yabe, T. Akagi, M. Yamaguchi, N. Kawachi, K. Kamada, A. Yoshikawa, J. Kataoka. Physica Medica 109: 102592, 2023 [DOI: 10.1016/j.ejmp.2023.102592]
Development of a list-mode data acquisition system for prompt X-ray imaging during irradiation with carbon-ions. S. Yamamoto, T. Yabe, T. Akagi, M. Yamaguchi, N. Kawachi, K. Kamada, A. Yoshikawa, J. Kataoka. Journal of Instrumentation 18: P04025, 2023 [DOI: 10.1088/1748-0221/18/04/P04025]
DynamicMC: An Open-source GUI Program Coupled with MCNP for Modeling Relative Dynamic Movement of Radioactive Source and ORNL Phantom in a 3-dimensional Radiation Field. K. N. Yu, H. Watabe, M. Zivkovic, D. Krstic, D. Nikezic, K. M. Kim, T. Yamaya, N. Kawachi, H. Tanaka, A. K. F. Haque, M. Shahmohammadi Beni. Health Physics 10.1097/HP.0000000000001670, 2023 [DOI: 10.1097/hp.0000000000001670]
Flow filtration/adsorption and simultaneous monitoring technologies of radiocesium 137Cs in river water. K. Enomoto, H. Hoshina, N. Kasai, K. Kurita, Y. Ueki, Y. Nagao, Y.-G. Yin, N. Suzui, N. Kawachi, N. Seko. Chemical Engineering Journal 141696, 2023 [DOI: 10.1016/j.cej.2023.141696]
Evaluation and optimization of geometry parameters of GAGG scintillator-based Compton Camera for medical imaging by Monte Carlo simulation, H. Zarei, S. Razaghi, Y. Nagao, M. Itoh, M. Yamaguchi, N. Kawachi, M.R. Ay, H. Watabe, Journal of Instrumentation 18: P01035, 2023 [DOI: 10.1088/1748-0221/18/01/P01035]
Rice immediately adapts the dynamics of photosynthates translocation to roots in response to changes in soil water environment. Y. Miyoshi, F. Soma, Y.-G. Yin, N. Suzui, Y. Noda, K. Enomoto, Y. Nagao, M. Yamaguchi, N. Kawachi, E. Yoshida, H. Tashima, T. Yamaya, N. Kuya, S. Teramoto, Y. Uga. Frontiers in Plant Science 13: 2023 [DOI: 10.3389/fpls.2022.1024144]
Time-of-flight based neutron background reduction in secondary-electron-bremsstrahlung imaging for in-vivo range verification of proton therapy: a Monte Carlo study. T. Yabe, M. Yamaguchi, M. Tsuda, Y. Nagao, N. Kawachi. Journal of Instrumentation 18: C02041, 2023 [DOI: 10.1088/1748-0221/18/02/C02041]
Simulation study on carbon-ion beam imaging by measuring secondary electron bremsstrahlung using imaging plate. M. Tsuda, M. Yamaguchi, W. Kada, T. Kamiya, M. Sakai, H. Watabe, Y. Nagao, T. Yabe, N. Kawachi. Journal of Instrumentation 18: C01071, 2023 [DOI: 10.1088/1748-0221/18/01/C01071]
2022
The performance study of developed cost-effective Compton Camera based on Ce:GAGG scintillator using experimental measurements and CCMod of GATE simulation module. H. Zarei, Y. Nagao, K. Yamamoto, M. Itoh, M. Yamaguchi, N. Kawachi, H. Watabe. Journal of Instrumentation 17: P10012, 2022 [DOI: 10.1088/1748-0221/17/10/P10012]
Advantages of using larger-diameter pinhole collimator for prompt X-ray imaging during irradiation with carbon ions. S. Yamamoto, T. Yabe, T. Akagi, M. Yamaguchi, N. Kawachi, K. Kamada, A. Yoshikawa, J. Kataoka. Journal of Instrumentation 17: P09006, 2022 [DOI: 10.1088/1748-0221/17/09/P09006]
Diversity of Na+ allocation in salt-tolerant species of the genus Vigna. Y. Noda, R. Sugita, A. Hirose, N. Kawachi, K. Tanoi, J. Furukawa, K. Naito. Breeding Science 72: 326-331, 2022 [DOI: 10.1270/jsbbs.22012]
Characterization of zinc uptake and translocation visualized with positron-emitting 65Zn tracer and analysis of transport-related gene expression in two Lotus japonicus accessions. Y. Noda, J. Furukawa, N. Suzui, Y.-G. Yin, K. Matsuoka, N. Kawachi, S. Satoh. Annals of Botany 130: 799-810, 2022 [DOI: 10.1093/aob/mcac101]
Spatial distributions of cesium and strontium in tea [Camellia sinensis (L.) Kuntze] leaves evaluated by micro-PIXE analysis. A. Terakawa, K. Momokita, Y. Hattori, M. Sato, K. Ishii, M. Koka, N. Yamada, R. Yamagata, Y. Ishii, N. Suzui, T. Satoh, N. Kawachi. International Journal of PIXE 30: 41-47, 2020 [DOI: 10.1142/s0129083520500059]
Deep learning-based in vivo dose verification from proton-induced secondary-electron-bremsstrahlung images with various count level. T. Yabe, M. Yamaguchi, C.-C. Liu, T. Toshito, N. Kawachi, S. Yamamoto. Physica Medica 99: 130-139, 2022 [DOI: 10.1016/j.ejmp.2022.05.013]
イメージングプレートを用いた粒子線の可視化. 津田 路子, 山口 充孝, 佐鳥 凌太, 加田 渉, 神谷 富裕, 酒井 真理, 長尾 悠人, 河地 有木. RADIOISOTOPES 71: 109-114, 2022 [DOI: 10.3769/radioisotopes.71.109]
“Live-Autoradiography” Technique Reveals Genetic Variation in the Rate of Fe Uptake by Barley Cultivars. K. Higuchi, K. Kurita, T. Sakai, N. Suzui, M. Sasaki, M. Katori, Y. Wakabayashi, Y. Majima, A. Saito, T. Ohyama, N. Kawachi. Plants 11: 817, 2022 [DOI: 10.3390/plants11060817]
Simulation evaluation on a compact monitor for gamma-emitting tracers in plant stems. M. Yamaguchi, N. Suzui, Y. Nagao, N. Kawachi. Japanese Journal of Applied Physics 61: 027001, 2022 [DOI: 10.35848/1347-4065/ac44b2]
2021
Performance improvement of Compton imaging of astatine-211 by optimising coincidence time windows. Y. Nagao, M. Yamaguchi, S. Watanabe, N. S. Ishioka, N. Kawachi, H. Watabe. Journal of Instrumentation 16: C12031, 2021 [DOI: 10.1088/1748-0221/16/12/C12031]
Plant root PET: visualization of photosynthate translocation to roots in rice plant. Y. Miyoshi, Y. Nagao, M. Yamaguchi, N. Suzui, Y. G. Yin, N. Kawachi, E. Yoshida, S. Takyu, H. Tashima, T. Yamaya, N. Kuya, S. Teramoto, Y. Uga. Journal of Instrumentation 16: C12018, 2021 [DOI: 10.1088/1748-0221/16/12/C12018]
Autoradiography system with phosphor powder (ZnS:Ag) for imaging radioisotope dynamics in a living plant. K. Kurita, T. Sakai, N. Suzui, Y.-G. Yin, R. Sugita, N. I. Kobayashi, K. Tanoi, N. Kawachi. Japanese Journal of Applied Physics 60: 116501, 2021 [DOI: 10.35848/1347-4065/ac2b50]
Non-invasive imaging of hollow structures and gas movement revealed the gas partial pressure gradient-driven long-distance gas movement in the aerenchyma along the leaf blade to submerged organs in rice. Y.-G. Yin, Y. Mori, N. Suzui, K. Kurita, M. Yamaguchi, Y. Miyoshi, Y. Nagao, M. Ashikari, K. Nagai, N. Kawachi. New Phytologist 232: 1974-1984, 2021 [DOI: 10.1111/nph.17726]
Imaging and range estimations of prompt X-rays using YAP(Ce) camera during particle-ion irradiation to phantoms with air cavities. M. Kitano, S. Yamamoto, T. Yabe, T. Akagi, T. Toshito, M. Yamaguchi, N. Kawachi. Journal of Instrumentation 16: P08064, 2021 [DOI: 10.1088/1748-0221/16/08/P08064]
Non-invasive 11C-Imaging Revealed the Spatiotemporal Variability in the Translocation of Photosynthates Into Strawberry Fruits in Response to Increasing Daylight Integrals at Leaf Surface. Y. Miyoshi, K. Hidaka, Y.-G. Yin, N. Suzui, K. Kurita, N. Kawachi. Frontiers in Plant Science 12: 688887, 2021 [DOI: 10.3389/fpls.2021.688887]
New evidence of arsenic translocation and accumulation in Pteris vittata from real-time imaging using positron-emitting 74As tracer. Y. H.-T. Kohda, Z. Qian, M.-F. Chien, K. Miyauchi, G. Endo, N. Suzui, Y.-G. Yin, N. Kawachi, H. Ikeda, H. Watabe, H. Kikunaga, N. Kitajima, C. Inoue. Scientific Reports 11: 12149, 2021 [DOI: 10.1038/s41598-021-91374-1]
Shoot base responds to root-applied glutathione and functions as a critical region to inhibit cadmium translocation from the roots to shoots in oilseed rape (Brassica napus). J.-S. Li, N. Suzui, Y. Nakai, Y.-G. Yin, S. Ishii, S. Fujimaki, N. Kawachi, H. Rai, T. Matsumoto, K. Sato-Izawa, N. Ohkama-Ohtsu, S. Nakamura. Plant Science 305: 110822, 2021 [DOI: 10.1016/j.plantsci.2021.110822]
Measurements of intensity of produced light in water during irradiations of electron beams with energies above and below the Cerenkov-light threshold. S. Yamamoto, Y. Nagao, K. Kurita, M. Yamaguchi, N. Kawachi. Journal of Instrumentation 16: P01007, 2021 [DOI: 10.1088/1748-0221/16/01/P01007]
Estimation of the origins and fractions of emitted light from acrylic block during irradiation of carbon-ions, S. Yamamoto, T. Akagi, M. Yamaguchi, N. Kawachi. Journal of Instrumentation 16: P01004, 2021 [DOI: 10.1088/1748-0221/16/01/P01004]
2020
Non-invasive imaging of radiocesium dynamics in a living animal using a positron-emitting 127Cs tracer. N. Suzui, T. Shibata, Y.-G. Yin, Y. Funaki, K. Kurita, H. Hoshina, M. Yamaguchi, S. Fujimaki, N. Seko, H. Watabe, N. Kawachi. Scientific Reports 10: 16155, 2020 [DOI: 10.1038/s41598-020-73351-2]
Positron-emitting Tracer Imaging System （PETIS） 法を用いたトマト果実への光合成産物の転流に果実直下の側枝葉が及ぼす影響の評価. 塚本 崇志, 石井 里美, 七夕 小百合, 鈴井 伸郎, 河地 有木, 藤巻 秀, 草川 知行. 園芸学研究 19: 269-275, 2020 [DOI: 10.2503/hrj.19.269]
AtFLL2, a member of the FLO2 gene family, affects the enlargement of leaves at the vegetative stage and facilitates the regulation of carbon metabolism and flow. N. Sato, M. Kihira, R. Matsushita, C. Kaneko, Y. Ishii, Y.-G. Yin, N. Kawachi, H. Teramura, H. Kusano, H. Shimada. Bioscience, Biotechnology, and Biochemistry 84: 2466-2475, 2020 [DOI: 10.1080/09168451.2020.1812374]
Estimation of shifts of therapeutic carbon-ion beams owing to cavities in a polyethylene target by measuring prompt X-ray images. M. Yamaguchi, S. Yamamoto, M. Kitano, M. Sakai, T. Akagi, Y. Nagao, N. Kawachi. Japanese Journal of Applied Physics 59: 087001, 2020 [DOI: 10.35848/1347-4065/aba22a]
Visualising spatio-temporal distributions of assimilated carbon translocation and release in root systems of leguminous plants. Y.-G. Yin, N. Suzui, K. Kurita, Y. Miyoshi, Y. Unno, S. Fujimaki, T. Nakamura, T. Shinano, N. Kawachi. Scientific Reports 10: 8446, 2020 [DOI: 10.1038/s41598-020-65668-9]
Dose image prediction for range and width verifications from carbon-ion induced secondary electron bremsstrahlung X-rays using deep learning workflow. M. Yamaguchi, C.-C. Liu, H.-M. Huang, T. Yabe, T. Akagi, N. Kawachi, S. Yamamoto. Medical Physics 47: 3520, 2020 [DOI: 10.1002/mp.14205]
Observation of Cerenkov-ring in water during irradiation of high-energy electron or X-ray beam. S. Yamamoto, M. Yamaguchi, K. Okudaira, F. Kawabata, T. Nakaya, N. Kawachi. Radiation Detectors and Their Uses : Proceedings of the Workshop on Radiation Detectors and Their Uses, KEK Proceedings 2020-5, pp. 75-87, 2020.
Crosstalk Reduction Using a Dual Energy Window Scatter Correction in Compton Imaging. M. Sakai, R. K. Parajuli, Y. Kubota, N. Kubo, M. Yamaguchi, Y. Nagao, N. Kawachi, M. Kikuchi, K. Arakawa, M. Tashiro. Sensors 20: 2453, 2020 [DOI: 10.3390/s20092453]
Sensitivity improvement of YAP(Ce) cameras for imaging of secondary electron bremsstrahlung X-rays emitted during carbon-ion irradiation: problem and solution. S. Yamamoto, M. Yamaguchi, T. Akagi, M. Kitano, N. Kawachi. Phys. Med. Biol. 65: 105008, 2020 [DOI: 10.1088/1361-6560/ab7a6e]
Imaging of 99mTc-DMSA and 18F-FDG in humans using a Si/CdTe Compton camera. T. Nakano, M. Sakai, K. Torikai, Y. Suzuki, S. Noda, M. Yamaguchi, S. Takeda, Y. Nagao, M. Kikuchi, H. Odaka, T. Kamiya, N. Kawachi, S. Watanabe, K. Arakawa, T. Takahashi. Physics in Medicine & Biology 65: 05LT01, 2020 [DOI: 10.1088/1361-6560/ab33d8]
A simulation study on estimation of Bragg-peak shifts via machine learning using proton-beam images obtained by measurement of secondary electron bremsstrahlung. M. Yamaguchi, Y. Nagao, N. Kawachi. IEEE Trans. Radiat. Plasma Med. Sci. 4: 253-261, 2020 [DOI: 10.1109/TRPMS.2019.2928016]
Fruit PET: 3-D imaging of carbon distribution in fruit using OpenPET. K. Kurita, Y. Miyoshi, Y. Nagao, M. Yamaguchi, N. Suzui, Y.-G. Yin, S. Ishii, N. Kawachi, K. Hidaka, E. Yoshida, S. Takyu, H. Tashima, T. Yamaya. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 954: 161843, 2020 [DOI: 10.1016/j.nima.2019.01.069]
A novel estimation method of water-equivalent thicknesses of secondary particle tracks using secondary electron bremsstrahlung emitted from therapeutic ion beams for attenuation correction. M. Yamaguchi, M. Sakai, Y. Nagao, M. Kikuchi, K. Arakawa, N. Kawachi. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 954: 161607, 2020 [DOI: 10.1016/j.nima.2018.11.066]
Effects of enhancing endogenous and exogenous glutathione in roots on cadmium movement in Arabidopsis thaliana. S. Nakamura, N. Suzui, Y.-G. Yin, S. Ishii, S. Fujimaki, N. Kawachi, H. Rai, T. Matsumoto, K. Izawa-Sato, N. Ohkama-Ohtsu. Plant Science 290: 110304, 2020 [DOI: 10.1016/j.plantsci.2019.110304]
2019
Towards a deeper integrated multi-omics approach in the root system to develop climate-resilient rice. K. Yoshino, Y. Numajiri, S. Teramoto, N. Kawachi, T. Tanabata, T. Tanaka, T. Hayashi, T. Kawakatsu, Y. Uga. Molecular Breeding 39: 165, 2019 [DOI: 10.1007/s11032-019-1058-4]
Recent Advances in Radioisotope Imaging Technology for Plant Science Research in Japan. N. Suzui, K. Tanoi, J. Furukawa, N. Kawachi. Quantum Beam Science 3: 18, 2019 [DOI: 10.3390/qubs3030018]
Development of a YAP(Ce) camera for the imaging of secondary electron bremsstrahlung x-ray emitted during carbon-ion irradiation toward the use of clinical conditions. S. Yamamoto, M. Yamaguchi, T. Akagi, M. Sasano, N. Kawachi. Physics in Medicine & Biology 64: 135019, 2019 [DOI: 10.1088/1361-6560/ab2072]
On-line rapid purification of [13N]N2 gas for visualization of nitrogen fixation and translocation in nodulated soybean. Y.-G. Yin, S. Ishii, N. Suzui, M. Igura, K. Kurita, Y. Miyoshi, N. Nagasawa, M. Taguchi, N. Kawachi. Applied Radiation and Isotopes 151: 7-12, 2019 [DOI: 10.1016/j.apradiso.2019.05.034]
Elevated glutathione synthesis in leaves contributes to zinc transport from roots to shoots in Arabidopsis. A. Wongkaew, S. Nakamura, N. Suzui, Y.-G. Yin, S. Ishii, N. Kawachi, K. Kojima, H. Sekimoto, T. Yokoyama, N. Ohkama-Ohtsu. Plant Science 283: 416-423, 2019 [DOI: 10.1016/j.plantsci.2018.11.003]
Assessment of gamma radiation from a limited area of forest floor using a cumulative personal dosimeter. T. Yoshihara, K. Kurita, H. Matsumura, V. Yoschenko, N. Kawachi, S. Hashida, A. Konoplev, H. Yoshida. Journal of Environmental Radioactivity 204: 95-103, 2019 [DOI: 10.1016/j.jenvrad.2019.03.023]
A simulation study on reduction of the background component using veto counters for imaging of therapeutic proton beams by measuring secondary electron bremsstrahlung using a parallel-hole collimator. M. Yamaguchi, Y. Nagao, N. Kawachi. Japanese Journal of Applied Physics 58: 021005, 2019 [DOI: 10.7567/1347-4065/aafb00]
Dynamic Analysis of Photosynthate Translocation Into Strawberry Fruits Using Non-invasive 11C-Labeling Supported With Conventional Destructive Measurements Using 13C-Labeling. K. Hidaka, Y. Miyoshi, S. Ishii, N. Suzui, Y.-G. Yin, K. Kurita, K. Nagao, T. Araki, D. Yasutake, M. Kitano, N. Kawachi. Frontiers in Plant Science 9: 1946, 2019 [DOI: 10.3389/fpls.2018.01946]
2018
Development of a cost-effective Compton camera using a positron emission tomography data acquisition system. Y. Nagao, M. Yamaguchi, N. Kawachi, H. Watabe. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 912: 20-23, 2018 [DOI: 10.1016/j.nima.2017.10.009]
Ultracompact Compton camera for innovative gamma-ray imaging. J. Kataoka, A. Kishimoto, T. Taya, S. Mochizuki, L. Tagawa, A. Koide, K. Sueoka, H. Morita, T. Maruhashi, K. Fujieda, T. Kurihara, M. Arimoto, H. Okochi, N. Katsumi, S. Kinno, K. Matsunaga, H. Ikeda, E. Shimosegawa, J. Hatazawa, S. Ohsuka, T. Toshito, M. Kimura, Y. Nagao, M. Yamaguchi, K. Kurita, N. Kawachi. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 912: 1-5, 2018 [DOI: 10.1016/j.nima.2017.09.048]
Effect of number of views on cross-sectional Compton imaging: A fundamental study with backprojection. M. Sakai, R. K. Parajuli, M. Kikuchi, M. Yamaguchi, Y. Nagao, N. Kawachi, K. Arakawa, T. Nakano. Physica Medica 56: 1-9, 2018 [DOI: 10.1016/j.ejmp.2018.11.006]
In vivo simultaneous imaging with 99mTc and 18F using a Compton camera. M. Sakai, M. Yamaguchi, Y. Nagao, N. Kawachi, M. Kikuchi, K. Torikai, T. Kamiya, S. Takeda, S. Watanabe, T. Takahashi, K. Arakawa, T. Nakano. Physics in Medicine and Biology 63: 205006, 2018 [DOI: 10.1088/1361-6560/aae1d1]
Development of an Easy and Simple Method to Measure the Environmental Radioactivity in Trees with Efficient Personal Dosimeters. K. Kurita, M. Yamaguchi, Y. Nagao, N. Suzui, Y.-G. Yin, T. Yoshihara, N. Kawachi. RADIOISOTOPES 67: 427-434, 2018 [DOI: 10.3769/radioisotopes.67.427]
Source of luminescence of water lower energy than the Cerenkov-light threshold during irradiation of carbon-ion. S. Yamamoto, T. Akagi, T. Yamashita, J. Toivonen, M. Yamaguchi, M. Komori, N. Kawachi. Journal of Physics Communications 2: 065010, 2018 [DOI: 10.1088/2399-6528/aaca28]
Astatine-211 imaging by a Compton camera for targeted radiotherapy. Y. Nagao, M. Yamaguchi, S. Watanabe, N. S. Ishioka, N. Kawachi, H. Watabe. Applied Radiation and Isotopes 139: 238-243, 2018 [DOI: 10.1016/j.apradiso.2018.05.022]
Imaging of monochromatic beams by measuring secondary electron bremsstrahlung for carbon-ion therapy using a pinhole x-ray camera. M. Yamaguchi, Y. Nagao, K. Ando, S. Yamamoto, M. Sakai, R. K. Parajuli, K. Arakawa, N. Kawachi. Physics in Medicine & Biology 63: 045016, 2018 [DOI: 10.1088/1361-6560/aaa17c]
Estimation and correction of produced light from prompt gamma photons on luminescence imaging of water for proton therapy dosimetry. T. Yabe, M. Komori, T. Toshito, M. Yamaguchi, N. Kawachi, S. Yamamoto. Physics in Medicine & Biology 63: 04NT02, 2018 [DOI: 10.1088/1361-6560/aaa90c]
2017
Optimization and verification of image reconstruction for a Compton camera towards application as an on-line monitor for particle therapy. T. Taya, J. Kataoka, A. Kishimoto, L. Tagawa, S. Mochizuki, T. Toshito, M. Kimura, Y. Nagao, K. Kurita, M. Yamaguchi, N. Kawachi. Journal of Instrumentation 12: P07015, 2017 [DOI: 10.1088/1748-0221/12/07/P07015]
Development of a low-energy high resolution X-ray camera for high-energy gamma photon background environments. K. Ando, S. Yamamoto, K. Kurita, N. Suzui, Y.-G. Yin, S. Ishii, N. Kawachi. Journal of Nuclear Science and Technology, 54: 933-939, 2017 [DOI: 10.1080/00223131.2017.1323690]
Development of a low-energy x-ray camera for the imaging of secondary electron bremsstrahlung x-ray emitted during proton irradiation for range estimation. K. Ando, M. Yamaguchi, S. Yamamoto, T. Toshito, N. Kawachi. Physics in Medicine and Biology 62: 5006, 2017 [DOI: 10.1088/1361-6560/aa7166]
First demonstration of multi-color 3-D in vivo imaging using ultra-compact Compton camera. A. Kishimoto, J. Kataoka, T. Taya, L. Tagawa, S. Mochizuki, S. Ohsuka, Y. Nagao, K. Kurita, M. Yamaguchi, N. Kawachi, K. Matsunaga, H. Ikeda, E. Shimosegawa, J. Hatazawa. Scientific Reports 7: 2110, 2017 [DOI: 10.1038/s41598-017-02377-w]
Visualization of zinc dynamics in intact plants using positron imaging of commercially available 65Zn. N. Suzui, Y.-G. Yin, S. Ishii, H. Sekimoto, N. Kawachi. Plant Methods 13: 40, 2017 [DOI: 10.1186/s13007-017-0188-0]
Development of a Cherenkov light imaging system for studying the dynamics of radiocesium in plants. K. Kurita, N. Suzui, Y.-G. Yin, S. Ishii, H. Watabe, S. Yamamoto, N. Kawachi. Journal of Nuclear Science and Technology 54: 662-667, 2017 [DOI: 10.1080/00223131.2017.1299051]
Arabidopsis thaliana FLO2 is Involved in Efficiency of Photoassimilate Translocation, Which is Associated with Leaf Growth and Aging, Yield of Seeds and Seed Quality. M. Kihira, K. Taniguchi, C. Kaneko, Y. Ishii, H. Aoki, A. Koyanagi, H. Kusano, N. Suzui, Y.-G. Yin, N. Kawachi, S. Fujimaki, H. Shimada. Plant and Cell Physiology 58: 440-450, 2017 [DOI: 10.1093/pcp/pcw217]
Monte Carlo simulation of photon emission below a few hundred kiloelectronvolts for beam monitoring in carbon ion therapy. M. Yamaguchi, Y. Nagao, T. Satoh, H. Sugai, M. Sakai, K. Arakawa, N. Kawachi. Review of Scientific Instruments 88: 014301, 2017 [DOI: 10.1063/1.4973986]
2016
Detection of a gas region in a human body across a therapeutic carbon beam by measuring low-energy photons. M. Yamaguchi, Y. Nagao, N. Kawachi, T. Satoh, S. Fujimaki, T. Kamiya, K. Torikai, H. Shimada, H. Sugai, M. Sakai, K. Arakawa, T. Nakano. International Journal of PIXE 26: 61-72, 2016 [DOI: 10.1142/s0129083516500078]
Measurement of environmental radioactivity using a cumulative gamma radiation dosimeter: Fertilization-induced changes in young fruit trees, T. Yoshihara, A. Kominato, Y. Nagao, N. Kawachi, S-N. Hashida, N. Suzui, Y.-G. Yin, S. Fujimaki, Proc. ENVIRA2015; 134-137, 2016
Application of glutathione and dithiothreitol to oil seed rape (Brassica napus L.) roots affects cadmium distribution in roots and inhibits Cd translocation to shoots, S. Nakamura, N. Suzui, S. I.-Tanabata, S. Ishii, N. Kawachi, H. Rai, H. Hattori, S. Fujimaki, Soil Sci. Plant Nutr., 62: 379-385, 2016 [DOI: 10.1080/00380768.2016.1188025]
Secondary-electron-bremsstrahlung imaging for proton therapy, M. Yamaguchi, Y. Nagao, K. Ando, S. Yamamoto, T. Toshito, J. Kataoka, N. Kawachi, Nucl. Instrum. Method. Phys. Res. A, 833: 199-207, 2016 [DOI: 10.1016/j.nima.2016.07.034]
Corrigendum: Beam range estimation by measuring bremsstrahlung (2012 Phys. Med. Biol. 57 2843), M. Yamaguchi, K. Torikai, N. Kawachi, H. Shimada, T. Satoh, Y. Nagao, S. Fujimaki, M. Kokubun, S. Watanabe, T. Takahashi, K. Arakawa, T. Kamiya, T. Nakano, Phys. Med. Biol., 61: 3638–3644, 2016 [DOI: 10.1088/0031-9155/61/9/3638]
Kinetic Analysis of Zinc/Cadmium Reciprocal Competitions Suggests a Possible Zn-Insensitive Pathway for Root-to-Shoot Cadmium Translocation in Rice, L. Fontanili, C. Lancilli, N. Suzui, B. Dendena, Y.-G. Yin, A. Ferri, S. Ishii, N. Kawachi, G. Lucchini, S. Fujimaki, G. A Sacchi, F. Nocito, Rice, 9: 16, 2016 [DOI: 10.1186/s12284-016-0088-3]
Imaging of radiocesium uptake dynamics in a plant body using a newly developed high-resolution gamma camera, N. Kawachi, Y.-G. Yin, N. Suzui, S. Ishii, T. Yoshihara, H. Watabe, S. Yamamoto, S. Fujimaki, J. Environ. Radioact., 151: 461-467, 2016 [DOI: 10.1016/j.jenvrad.2015.04.009]
2015
Effects of Glutathione Concentration in the Root Zone and Glutathione Treatment Period on Cadmium Partitioning in Oilseed Rape Plants, S. Nakamura, H. Kondo, N. Suzui, Y.-G. Yin, S. Ishii, N. Kawachi, H. Rai, H. Hattori, S. Fujimaki. Molecular Physiology and Ecophysiology of Sulfur, 253-259: 2015 [DOI: 10.1007/978-3-319-20137-5_28]
Common reed accumulates starch in its stem by metabolic adaptation under Cd stress conditions, K. Higuchi, M. Kanai, M. Tsuchiya, H. Ishii, N. Shibuya, N. Fujita, Y. Nakamura, N. Suzui, S. Fujimaki, E. Miwa, Front. Plant Sci., 6: 138, 2015 [DOI: 10.3389/fpls.2015.00138]
Route and regulation of zinc, cadmium, and iron transport in rice plants (Oryza sativa L.) during vegetative growth and grain filling; Metal transporters, metal speciation, grain Cd reduction and Zn and Fe biofortification, T. Yoneyama, S. Ishikawa, S. Fujimaki. International Journal of Molecular Sciences, 16: 19111, 2015 [DOI: 10.3390/ijms160819111]
半導体型積算線量計による環境放射能の測定,1;従来測定法との比較による可能性評価,吉原利一,長尾悠人,橋田慎之介,河地有木,藤巻秀,電力中央研究所報告,O14002,2015
Base to tip and long-distance transport of sodium in the root of common reed (Phragmites australis (Cav.) trin. ex steud.) at steady state under constant high-salt conditions, S. Fujimaki, T. Maruyama, N. Suzui, N. Kawachi, E. Miwa, K. Higuchi, Plant Cell Physiol., 56: 943-950, 2015 [DOI: 10.1093/pcp/pcv021]
Live-imaging evaluation of the efifcacy of elevated CO2 concentration in a closed cultivation system for the improvement of bioproduction in tomato fruits, H. Yamazaki, N. Suzui, Y.- G. Yin, N. Kawachi, S. Ishii, H. Shimada, S. Fujimaki, Plant Biotechnol., 32: 31-37, 2015 [DOI: 10.5511/plantbiotechnology.14.1210a]
Monitoring of positron using high-energy gamma camera for proton therapy, S. Yamamoto, T. Toshito, M. Komori, Y. Morishita, S. Okumura, M. Yamaguchi, Y. Saito, N. Kawachi, S. Fujimaki, Ann. Nucl. Med., 29: 268-275, 2015 [DOI: 10.1007/s12149-014-0936-4]
Ultra-High resolution of radiocesium distribution detection based on Cherenkov light imaging. S. Yamamoto, Y. Ogata, N. Kawachi, N. Suzui, Y.-G. Yin, S. Fujimaki. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 777: 102-109, 2015 [DOI: 10.1016/j.nima.2014.12.090]
2014
From Laboratory to Field: OsNRAMP5-Knockdown Rice Is a Promising Candidate for Cd Phytoremediation in Paddy Fields. R. Takahashi, Y. Ishimaru, H. Shimo, K. Bashir, T. Senoura, K. Sugimoto, K. Ono, N. Suzui, N. Kawachi, S. Ishii, Y.-G. Yin, S. Fujimaki, M. Yano, N. K. Nishizawa, H. Nakanishi. PLoS ONE 9: e98816, 2014 [DOI: 10.1371/journal.pone.0098816]
Three-layer GSO depth-of-interaction detector for high-energy gamma camera. S. Yamamoto, H. Watabe, N. Kawachi, S. Fujimaki, K. Kato, J. Hatazawa. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 743: 124-129, 2014 [DOI: 10.1016/j.nima.2014.01.011]
A kinetic analysis of cadmium accumulation in a Cd Hyper-accumulator Fern, Athyrium Yokoscense and tobacco plants. T. Yoshihara, N. Suzui, S. Ishii, M. Kitazaki, H. Yamazaki, K. Kitazaki, N. Kawachi, Y.-G. Yin, S. Ito-Tanabata, S.-N. Hashida, K. Shoji, H. Shimada, F. Goto, S. Fujimaki. Plant, Cell & Environment 37: 1086-1096, 2014 [DOI: 10.1111/pce.12217]
2013
Quantitative analysis of the initial transport of fixed nitrogen in nodulated soybean plants using 15N as a tracer. N. Van Phi Hung, S. Watanabe, S. Ishikawa, N. Ohtake, K. Sueyoshi, T. Sato, S. Ishii, S. Fujimaki, T. Ohyama. Soil Science and Plant Nutrition 59: 888-895, 2013 [DOI:10.1080/00380768.2013.838742]
Nitrate facilitates cadmium uptake, transport and accumulation in the hyperaccumulator Sedum plumbizincicola. P. Hu, Y.-G. Yin, S. Ishikawa, N. Suzui, N. Kawachi, S. Fujimaki, M. Igura, C. Yuan, J. Huang, Z. Li, T. Makino, Y. Luo, P. Christie, L. Wu. Environmental Science and Pollution Research 20: 6306-6316, 2013 [DOI: 10.1007/s11356-013-1680-3]
Application of glutathione to roots selectively inhibits cadmium transport from roots to shoots in oilseed rape. S. Nakamura, N. Suzui, T. Nagasaka, F. Komatsu, N.S. Ishioka, S. Ito-Tanabata, N. Kawachi, H. Rai, H. Hattori, M. Chino, S. Fujimaki. Journal of Experimental Botany 64: 1073-1081, 2013 [DOI: 10.1093/jxb/ers388]
2012
NaI(Tl)スペクトロメーターによるセシウム134および137を弁別した定量方法.尹永根,鈴井伸郎,山口充孝,河地有木,田野井慶太朗,中西友子,茅野充男,中村進一,藤巻秀.日本土壌肥料學雜誌83:296-300,2012[NAID:110009593712]
Beam range estimation by measuring bremsstrahlung. M. Yamaguchi, K. Torikai, N. Kawachi, H. Shimada, T. Satoh, Y. Nagao, S. Fujimaki, M. Kokubun, S. Watanabe, T. Takahashi, K. Arakawa, T. Kamiya, T. Nakano. Physics in Medicine and Biology 57: 2843, 2012 [DOI: 10.1088/0031-9155/57/10/2843]
2011
Real-time imaging and analysis of differences in cadmium dynamics in rice cultivars (Oryza sativa) using positron-emitting107Cd tracer. S. Ishikawa, N. Suzui, S. Ito-Tanabata, S. Ishii, M. Igura, T. Abe, M. Kuramata, N. Kawachi, S. Fujimaki. BMC Plant Biology 11: 172, 2011 [DOI: 10.1186/1471-2229-11-172]
A quick incorporation of 13N into the soluble high-molecular compound in rice (Oryza sativa L.) roots by application of 13N-labeled nitrate/nitrite, T. Yoneyama, N. Suzui, N.S. Ishioka, S. Fujimaki. Soil Sci. Plant Nutr., 57, 279-282, 2011 [DOI: 10.1080/00380768.2011.576399]
Imaging of Carbon Translocation to Fruit Using Carbon-11-Labeled Carbon Dioxide and Positron Emission Tomography, N. Kawachi, K. Kikuchi, N. Suzui, S. Ishii, S. Fujimaki, N.S. Ishioka, H. Watabe, IEEE Trans. Nucl. Sci. 58: 395-399, 2011 [DOI: 10.1109/TNS.2011.2113192]
植物の必須元素の栄養生理(2010年札幌大会シンポジウムの概要),牧野周,末吉邦,鈴木雄二,110008897994河地有木,俵谷圭太郎,大津直子,中西啓仁,藤原徹.日本土壌肥料學雜誌82:152-159,2011[NAID:110008897994]
Development of head module for multi-head Si/CdTe Compton camera for medical applications, M. Yamaguchi, N. Kawachi, N. Suzui, S. Fujimaki, T. Kamiya, H. Odaka, S. Ishikawa, M. Kokubun, S. Watanabe, T. Takahashi, H. Shimada, K. Arakawa, Y. Suzuki, K. Torikai, Y. Yoshida, T. Nakano. Nucl. Instrum. Methods Phys. Res. A 648: S2-S7, 2011 [DOI: 10.1016/j.nima.2011.02.040]
Real-time whole-plant imaging of 11C translocation using positron-emitting tracer imaging, N. Kawachi, N. Suzui, S. Ishii, S. Ito, N.S. Ishioka, H. Yamazaki, A. H. Iwasaki, K. Ogawa, S. Fujimaki, Nucl. Instrum. Methods Phys. Res. A 648: S317-S320, 2011 [DOI: 10.1016/j.nima.2010.10.152]
2010
Tracing cadmium from culture to spikelet: non-invasive imaging and quantitative characterization of absorption, transport and accumulation of cadmium in an intact rice plant, S. Fujimaki, N. Suzui, N.S. Ishioka, N. Kawachi, S. Ito, M. Chino, S. Nakamura. Plant Physiology 152: 1796-1806, 2010 [DOI: 10.1104/pp.109.151035]
S. Ito, S. Fujimaki, T. Kato, N. Ohtake, K. Sueyoshi, T. Ohyama (2010) Regulation of root nodule formation in leguminous plants. In: Ohyama T, Sueyoshi K (eds) Nitrogen Assimilation in Plants. Research Signpost, Kerala, India
S. Fujimaki, S. Ishii, N.S. Ishioka (2010) Non-invasive imaging and analyses of transport of nitrogen nutrition in intact plants using a positron-emitting tracer imaging system (PETIS). In: Ohyama T, Sueyoshi K (eds) Nitrogen Assimilation in Plants. Research Signpost, Kerala, India
11CO2と植物用ボジトロンイメージング装置を用いたダイズ植物の根粒に対する光合成産物移行のリアルタイム解析,伊藤小百合,鈴井伸郎,河地有木,石井里美,石岡典子,藤巻秀.Radioisotopes59:145-154,2010[DOI:10.3769/radioisotopes.59.145]
2009
Real-time imaging of nitrogen fixation in an intact soybean plant with nodules using 13N-labeled nitrogen gas. S. Ishii, N. Suzui, S. Ito, N. S. Ishioka, N. Kawachi, N. Ohtake, T. Ohyama and S. Fujimaki. Soil Science and Plant Nutrition 55: 660-666, 2009 [DOI: 10.1111/j.1747-0765.2009.00403.x]
Production of no-carrier-added 64Cu and applications to molecular imaging by PET and PETIS as a biomedical tracer. S. Watanabe, Y. Iida, N. Suzui, T. Katabuchi, S. Ishii, N. Kawachi, H. Hanaoka, S. Watanabe, S. Matsuhashi, K. Endo, N. Ishioka. Journal of Radioanalytical and Nuclear Chemistry 280: 199-205, 2009 [DOI: 10.1007/s10967-008-7443-9]
Experimental results of the gamma-ray imaging capability with a Si/CdTe semiconductor Compton camera. S. Takeda, H. Aono, S. Okuyama, S. Ishikawa, H. Odaka, S. Watanabe, M. Kokubun, T. Takahashi, K. Nakazawa, H. Tajima, N. Kawachi. IEEE Transaction on Nuclear Science 56: 783-790, 2009 [DOI: 10.1109/TNS.2008.2012059]
52Fe translocation in barley as monitored by a positron-emitting tracer imaging system (PETIS): evidence for the direct translocation of Fe from roots to young leaves via phloem. T. Tsukamoto, H. Nakanishi, H. Uchida, S. Watanabe, S. Matsuhashi, S. Mori, N. K. Nishizawa. Plant Cell Physiol 50: 48-57, 2009 [DOI: 10.1093/pcp/pcn192]
2008
Deoxymugineic acid increases Zn translocation in Zn-deficient rice plants. M. Suzuki, T. Tsukamoto, H. Inoue, S. Watanabe, S. Matsuhashi, M. Takahashi, H. Nakanishi, S. Mori, N. K. Nishizawa. Plant Molecular Biology 66: 609-617, 2008 [DOI: 10.1007/s11103-008-9292-x]
Use of positron-emitting tracer imaging system for measuring the effect of salinity on temporal and spatial distribution of 11C tracer and coupling between source and sink organs. R. Suwa, S. Fujimaki, N. Suzui, N. Kawachi, S. Ishii, K. Sakamoto, N. T. Nguyen, H. Saneoka, P. K. Mohapatra, R. E. Moghaieb. Plant Science 175: 210-216, 2008 [DOI: 10.1016/j.plantsci.2008.03.022]
Real-time analysis of photoassimilate translocation in intact eggplant fruit using 11CO2 and a positron-emitting tracer Imaging system. K. Kikuchi, S. Ishii, S. Fujimaki, N. Suzui, H. Matsuhashi, I. Honda, Y. Shishido, N. Kawachi. Journal of the Japanese Society for Horticultural Science 77: 199-205, 2008 [DOI: 10.2503/jjshs1.77.199]
Analysis of NO3 interception of the parasitic angiosperm Orobanche spp. using a positron-emitting tracer imaging system and 13NO3-: A new method for the visualization and quantitative analysis of the NO3 interception ratio. N. Kawachi, S. Fujimaki, K. Sakamoto, N. S. Ishioka, S. Matsuhashi, H. Sekimoto. Soil Science and Plant Nutrition 54: 408-416, 2008 [DOI:10.1111/j.1747-0765.2008.00252.x]
2007
Mutational reconstructed ferric chelate reductase confers enhanced tolerance in rice to iron deficiency in calcareous soil. Y. Ishimaru, S. Kim, T. Tsukamoto, H. Oki, T. Kobayashi, S. Watanabe, S. Matsuhashi, M. Takahashi, H. Nakanishi, S. Mori, N. K. Nishizawa. Proceedings of the National Academy of Sciences of the United States of America 104: 7373-7378, 2007 [DOI: 10.1073/pnas.0610555104]
The Positron Emitting Tracer Imaging System (PETIS), a Most-advanced Imaging Tool for Plant Physiology. S. Fujimaki. ITE LETTERS ON BATTERIES NEW TECHNOLOGIES AND MEDICINE 8: 404-413, 2007
2006
52Mn translocation in barley monitored using a positron-emitting tracer imaging system. T. Tsukamoto, H. Nakanishi, S. Kiyomiya, S. Watanabe, S. Matsuhashi, N. K. Nishizawa, S. Mori. Soil Science and Plant Nutrition 52: 717-725, 2006 [DOI: 10.1111/j.1747-0765.2006.00096.x]
Biosynthesis and secretion of mugineic acid family phytosiderophores in zinc-deficient barley. M. Suzuki, M. Takahashi, T. Tsukamoto, S. Watanabe, S. Matsuhashi, J. Yazaki, N. Kishimoto, S. Kikuchi, H. Nakanishi, S. Mori, N. K. Nishizawa. Plant Journal 48: 85-97, 2006 [DOI: 10.1111/j.1365-313X.2006.02853.x]
A new visualization technique for the study of the accumulation of photoassimilates in wheat grains using [11C]CO2. S. Matsuhashi, S. Fujimaki, H. Uchida, N. S. Ishioka, T. Kume. Applied Radiation and Isotopes 64: 435-440, 2006 [DOI: 10.1016/j.apradiso.2005.08.020]
Kinetic analysis of carbon-11-labeled carbon dioxide for studying photosynthesis in a leaf using positron emitting tracer imaging system. N. Kawachi, K. Sakamoto, S. Ishii, S. Fujimaki, N. Suzui, N. S. Ishioka, S. Matsuhashi. Ieee Transactions on Nuclear Science 53: 2991-2997, 2006 [DOI: 10.1109/TNS.2006.881063]
Rice plants take up iron as an Fe3+-phytosiderophore and as Fe2+. Y. Ishimaru, M. Suzuki, T. Tsukamoto, K. Suzuki, M. Nakazono, T. Kobayashi, Y. Wada, S. Watanabe, S. Matsuhashi, M. Takahashi, H. Nakanishi, S. Mori, N. K. Nishizawa. Plant Journal 45: 335-346, 2006 [DOI: 10.1111/j.1365-313X.2005.02624.x]
2005
Quantitative modeling of photoassimilate flow in an intact plant using the Positron Emitting Tracer Imaging System (PETIS). S. Matsuhashi, S. Fujimaki, N. Kawachi, K. Sakamoto, N. S. Ishioka, T. Kume. Soil Science and Plant Nutrition 51: 417-423, 2005 [DOI: 10.1111/j.1747-0765.2005.tb00047.x]
Input-output analysis of in vivo photoassimilate translocation using Positron-Emitting Tracer Imaging System (PETIS) data. A. J. Keutgen, N. Keutgen, S. Matsuhashi, C. Mizuniwa, T. Ito, T. Fujimura, N. S. Ishioka, S. Watanabe, A. Osa, T. Sekine, H. Uchida, A. Tsuji, S. Hashimoto. Journal of Experimental Botany 56: 1419-1425, 2005 [DOI: 10.1093/jxb/eri143]
2003
Quick and reversible inhibition of soybean root nodule growth by nitrate involves a decrease in sucrose supply to nodules. H. Fujikake, A. Yamazaki, N. Ohtake, K. Sueyoshi, S. Matsuhashi, T. Ito, C. Mizuniwa, T. Kume, S. Hashimoto, N. S. Ishioka, S. Watanabe, A. Osa, T. Sekine, H. Uchida, A. Tsuji, T. Ohyama. Journal of Experimental Botany 54: 1379-1388, 2003 [DOI: 10.1093/jxb/erg147]
2002
Transfer function analysis of positron-emitting tracer imaging system (PETIS) data. N. Keutgen, S. Matsuhashi, C. Mizuniwa, T. Ito, T. Fujimura, N. S. Ishioka, S. Watanabe, T. Sekine, H. Uchida, S. Hashimoto. Applied Radiation and Isotopes 57: 225-233, 2002 [DOI: 10.1016/S0969-8043(02)00077-5]
Effects of anion channel blockers on xylem nitrate transport in barley seedlings. T. Kawachi, C. Nishijo, H. Fujikake, S. Abdel-Latif, N. Ohtake, K. Sueyoshi, T. Ohyama, N. Shigeta-Ishioka, S. Watanabe, A. Osa, T. Sekine, S. Matsuhashi, T. Ito, C. Mizuniwa, T. Kume, S. Hashimoto, H. Uchida, A. Tsuji. Soil Science and Plant Nutrition 48: 271-277, 2002 [DOI: 10.1080/00380768.2002.10409200]
2001
Effect of radiation-degraded chitosan on plants stressed with vanadium. L. Xuan Tham, N. Nagasawa, S. Matsuhashi, N. S. Ishioka, T. Ito, T. Kume. Radiation Physics and Chemistry 61: 171-175, 2001 [DOI: 10.1016/S0969-806X(00)00388-1]
Production of positron emitters of metallic elements to study plant uptake and distribution. S. Watanabe, N. S. Ishioka, A. Ose, M. Koizumi, T. Sekine, S. Kiyomiya, H. Nakanishi, S. Mori. Radiochimica Acta 89: 853-858, 2001
Rapid N transport to pods and seeds in N-deficient soybean plants. N. Ohtake, T. Sato, H. Fujikake, K. Sueyoshi, T. Ohyama, N. S. Ishioka, S. Watanabe, A. Osa, T. Sekine, S. Matsuhashi, T. Ito, C. Mizuniwa, T. Kume, S. Hashimoto, H. Uchida, A. Tsuji. Journal of Experimental Botany 52: 277-283, 2001 [DOI: 10.1093/jexbot/52.355.277]
18F used as tracer to study water uptake and transport imaging of a cowpea plant. T. M. Nakanishi, K. Tanoi, H. Yokota, D. J. Kang, R. Ishii, N. S. Ishioka, S. Watanabe, A. Osa, T. Sekine, S. Matsuhashi, T. Ito, T. Kume, H. Uchida, A. Tsuji. Journal of Radioanalytical and Nuclear Chemistry 249: 503-507, 2001 [DOI: 10.1023/A:1013217425209]
Real time visualization of 13N-translocation in rice under different environmental conditions using positron emitting tracer imaging system. S. Kiyomiya, H. Nakanishi, H. Uchida, A. Tsuji, S. Nishiyama, M. Futatsubashi, H. Tsukada, N. S. Ishioka, S. Watanabe, T. Ito, C. Mizuniwa, A. Osa, S. Matsuhashi, S. Hashimoto, T. Sekine, S. Mori. Plant Physiology 125: 1743-1753, 2001 [DOI: 10.1104/pp.125.4.1743]
Light activates H215O flow in rice: Detailed monitoring using a positron-emitting tracer imaging system (PETIS). S. Kiyomiya, H. Nakanishi, H. Uchida, S. Nishiyama, H. Tsukada, N. S. Ishioka, S. Watanabe, A. Osa, C. Mizuniwa, T. Ito, S. Matsuhashi, S. Hashimoto, T. Sekine, A. Tsuji, S. Mori. Physiologia Plantarum 113: 359-367, 2001 [DOI: 10.1034/j.1399-3054.2001.1130309.x]
Ion chromatographic analysis of selected free amino acids and cations to investigate the change of nitrogen metabolism by herbicide stress in soybean (Glycine max). M. H. Jia, N. Keutgen, S. Matsuhashi, C. Mitzuniwa, T. Ito, T. Fujimura, S. Hashimoto. Journal of Agricultural and Food Chemistry 49: 276-280, 2001 [DOI: 10.1021/jf990344c]
Vanadium uptake and an effect of vanadium treatment on 18F-labeled water movement in a cowpea plant by positron emitting tracer imaging system (PETIS). J. Furukawa, H. Yokota, K. Tanoi, S. Ueoka, S. Matsuhashi, N. S. Ishioka, S. Watanabe, H. Uchida, A. Tsuji, T. Ito, T. Mizuniwa, A. Osa, T. Sekine, S. Hashimoto, T. M. Nakanishi. Journal of Radioanalytical and Nuclear Chemistry 249: 495-498, 2001 [DOI: 10.1023/A:1013276224300]
Real-time [11C]methionine translocation in barley in relation to mugineic acid phytosiderophore biosynthesis. N. Bughio, H. Nakanishi, S. Kiyomiya, S. Matsuhashi, N. S. Ishioka, S. Watanabe, H. Uchida, A. Tsuji, A. Osa, T. Kume, S. Hashimoto, T. Sekine, S. Mori. Planta 213: 708-715, 2001 [DOI: 10.1007/s004250100552]
2000
Visualization of 15O-water flow in tomato and rice in the light and dark using a positron-emitting tracer imaging system (PETIS). S. Mori, S. Kiyomiya, H. Nakanishi, N. S. Ishioka, S. Watanabe, A. Osa, S. Matsuhashi, S. Hashimoto, T. Sekine, H. Uchida, S. Nishiyama, H. Tsukada, A. Tsuji. Soil Science and Plant Nutrition 46: 975-979, 2000 [DOI: 10.1080/00380768.2000.10409163]
1999
Analysis of nitrate absorption and transport in non-nodulated and nodulated soybean plants with 13NO3-and 15NO3-. T. Sato, N. Ohtake, T. Ohyama, N. S. Ishioka, S. Watanabe, A. Osa, T. Sekine, H. Uchida, A. Tsuji, S. Matsuhashi. Radioisotopes 48: 450-458, 1999 [DOI: 10.3769/radioisotopes.48.450]
Visualizing real time [11C]methionine translocation in Fe-sufficient and Fe-deficient barley using a Positron Emitting Tracer Imaging System (PETIS). H. Nakanishi, N. Bughio, S. Matsuhashi, N. S. Ishioka, H. Uchida, A. Tsuji, A. Osa, T. Sekine, T. Kume, S. Mori. Journal of Experimental Botany 50: 637-643, 1999 [DOI: 10.1093/jxb/50.334.637]
13N-nitrate uptake sites and rhizobium-infectible region in a single root of common bean and soybean. H. Matsunami, Y. Arima, K. Watanabe, N. S. Ishioka, S. Watanabe, A. Osa, T. Sekine, H. Uchida, A. Tsuji, S. Matsuhashi, T. Itoh, T. Kume. Soil Science and Plant Nutrition 45: 955-962, 1999 [DOI: 10.1080/00380768.1999.10414345]
1998
N. S. Ishioka, T. Sekine, H. Matsuoka, S. Watanabe, A. Osa, M. Koizumi, T. Kume, S. Matsuhashi, T. Fujimura, H. Uchida, A. Tsuji, L. X. Tham, V. H. Dang. Application of positron emitters to studies on plants. Proc. of 1997 Workshop on the Utilization of Research Reactors; 349, 1998
著書・総説・解説
二次電子制動放射線計測による陽子線治療ビームモニタリング. 矢部卓也, 山口充孝, 河地有木. MEDICAL IMAGING TECHNOLOGY 43: 11-15, 2025 [DOI: 10.11409/mit.43.11]
生きた動植物体内の放射性セシウムの動態を可視化するポジトロン放出核種127Csトレーサの開発. 鈴井伸郎. 陽電子科学 18: 19-25, 2022 [J-GLOBAL ID: 202202213805706673]
生体内を駆けめぐるセシウム元素の動きを見る方法. 鈴井伸郎, 尹永根, 河地有木. Isotope News 776: 32-33, 2021 [PDF]
植物の元素イメージング. 馬建鋒, 田野井慶太朗, 古川純, 鈴井伸郎, Wang Peng, 山地直樹, 高野順平. 日本土壌肥料学雑誌 92: 213-218, 2021 [DOI: 10.20710/dojo.92.2_213]
植物科学における放射線イメージング. 鈴井伸郎, 河地有木, 古川純, 田野井慶太朗. RADIOISOTOPES 68: 643-657, 2019 [DOI: 10.3769/radioisotopes.68.643]
ポジトロンイメージング技術(PETIS)を用いたイチゴ果実への光合成産物転流動態の評価. 三好悠太, 日高功太. アグリバイオ 3: 761-764, 2019 [NAID: 40021995800]
粒子線がん治療における治療ビーム軌跡の二次電子制動輻射による画像化. 山口充孝, 長尾悠人, 河地有木. Isotope News 760: 6-9, 2018 [PDF]
電子制動輻射を用いた粒子線モニタリング手法. 山口充孝,長尾悠人,酒井真理,菅井裕之.放射線と産業140: 23-27, 2016 [NAID:40020874565]
植物研究に求められるRIイメージング技術とは. 河地有木.Isotope News 744:2-6,2016 [PDF]
ナトリウム排除能が高いヨシ根におけるナトリウム下方移動の証明 ,樋口恭子,藤巻秀,Bio Industry,32: 46-52, 2015 [NAID: 40021175817]
放射性セシウムの植物体内移行のガンマカメラによる解析, 藤巻秀,放射線と産業,138: 25-28, 2015 [NAID:40020499347]
RIを利用した植物の元素動態のライブイメージング. 藤巻秀.化学と生物52: 582-587, 2014 [DOI:10.1271/kagakutoseibutsu.52.582]
ガンマ線イメージング技術を駆使した植物研究の展開. 河地有木.Journal of the Vacuum Society of Japan 57: 37-44, 2014 [DOI:10.3131/jvsj2.57.37]
植物における放射性カドミウムの非破壊イメージング. 鈴井伸郎.RADIOISOTOPES 62: 61-63, 2013 [DOI:10.3769/radioisotopes.62.61]
ＮaI(Tl)spectrometerとガンマカメラを駆使した農地汚染問題への取り組み.尹永根,鈴井伸郎,河地有木,山口充孝,田野井慶太朗,石井里美,中西友子,茅野充男,中村進一,渡部浩司,山本誠一,藤巻秀.放射線と産業133: 45-48, 2012 [NAID:40019514406]
「RIイメージング技術」とは何か？藤巻秀.放射線と産業,132: 4-6, 2012 [NAID:40019345127]
土壌－植物系における放射性セシウム動態のイメージング. 尹永根,河地有木.放射線と産業 132: 7-11, 2012 [NAID:0019345139]
作物の窒素栄養獲得機構の研究. 石井里美,放射線と産業 132: 17-20, 2012 [NAID:40019345167]
空気中の窒素を養分にするマメ科植物の「根粒」の機能の画像化. 藤巻秀,石井里美,大山卓爾.放射線と産業,124: 32-35, 2009 [NAID:40016923259]
生命科学分野で役立つポジトロン放出核種を用いた非侵襲的計測技術. 石岡典子,藤巻秀.放射線と産業,124: 21-26, 2009[NAID:40016923257]
11Cを用いた光合成産物のイメージング. 鈴井伸郎 光合成研究19: 114-117, 2009[NAID:40017325892]
シリコンおよびテルル化カドミウム半導体検出器による生体内イメージング装置としてのコンプトンカメラの開発. 河地有木.MEDICALIMAGING TECHNOLOGY 27: 3-8, 2009[NAID:10025543875]
ポジトロンイメージング技術の概要／ポジトロンイメージング技術の植物研究への応用／ポジトロンイメージングの研究成果.久米民和,松橋信平,中西友子.食品・農業分野の放射線利用,173-204, 2008
土壌中からのカドミウムの除去技術（ファイトレメディエーション）の実用化を目指した研究におけるポジトロンイメージング技術の貢献.中村進一,茅野充男,藤巻秀,鈴井伸郎,石岡典子,河地有木,松橋信平.放射線と産業 117: 9-14, 2008[NAID:40015904277]
植物分子イメージングによる光合成機能の可視化河地有木.光合成研究 17:74-78,2007
植物のカドミウム吸収・輸送―植物ポジトロンイメージング技術による可視化―.松橋信平.Isotope News 634:7-9,2007 [NAID:10018503932]
ソラマメの茎の中を糖が輸送される様子のリアルタイム動画像.藤巻秀.Isotope News 621: 4, 2006 [NAID:10016895760]
植物ポジトロンイメージング技術による植物機能の解析–成長中のイネにおけるカドミウム動態の可視化. 松橋信平.原子力eye 52: 34-37, 2006 [NAID:40007391831]
ポジトロンイメージングによる植物機能の可視化. 大山卓爾,松橋信平.放射線と産業 108, 2005 [NAID:40007063290]
ポジトロンイメージング技術でわかる植物の未知の機能. 松橋信平.Isotope News 592:2-7,2003 [NAID:10011613528]
植物の生理活動研究の手段としてのPET. 森敏,中西友子,林浩昭,大山卓爾,内田博,松橋信平,関根俊明. RADIOISOTOPES 50: 408-418, 2001 [DOI:10.3769/radioisotopes.50.9_408]
ポジトロンイメージング装置(PETIS)とイメージングプレート(IP)による植物研究のためのポジトロンイメージング. 松橋信平,内田博,久米民和. RADIOISOTOPES 49: 558-570, 2001 [DOI:10.3769/radioisotopes.49.558]
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