Y. Wakisaka, Y. Tominaga, M. Nakata, R. Rahimi, Y. Miyasaka, T. Higashikawa, T. Nishio, M. Yamamoto, “Defining clinically relevant residual motion for respiratory-gated scanning proton therapy of liver cancer: a patient-derived 4D dynamic dose analysis,” Physica. Medica. 145, 105800 (2026).

D. Kawahara, S. Ozawa, T. Minemura, Y. Kumazaki, H. Hirashima, S. Kito, H. Okamoto, M. Nakamura, T. Nishio, I. Nishibuchi, Y. Matsuo, T. Kimura, S. Ishikura, N. Shikama, Y. Nagata, T. Mizowaki, “Credentialing of small-field dosimetry for lung stereotactic body radiation therapy in Japan Clinical Oncology Group clinical trial,” J. Appl. Clin. Med. Phys. e?????? (2026).

S. Yamamoto, K. Nakanishi, K. Yogo, Y. Noguchi, K. Okudaira, T. Nakaya, M. Yoshino, K. Kameda, A. Yoshikawa, T. Nishio, J. Kataoka, “Performance evaluation of a flexible GAGG sheet for surface imaging of X-rays from computed tomography (CT) and linear accelerator (LINAC),” Biomed. Phys. Eng. Express. 12, 025022 (2026).

Y. Wakisaka, Y. Tominaga, Y. Miyasaka, R. Rahimi, K. Furutani, M. Nakata, T. Iwai, T. Nishio, “Enhancing dose conformity in head and neck intensity-modulated proton therapy using a novel dynamic multi-leaf collimator strategy,” Med. Phys. 53(2), e70355 (2026).

Y. Wakisaka, S. Fukuda, T. Tsubouchi, N. Hamatani, M. Yagi, M. Nakata, Y. Tominaga, K. Hayashi, M. Takashina, K. Minami, T. Nishio, T. Kanai, “Tumor control probability analysis in carbon-ion radiotherapy for prostate cancer considering the oxygen effect,” Physica. Medica. 143, 105744 (2026).

J. Nakao, T. Masuda, T. Yamano, T. Toshito, T. Nishio, “Experimental validation of a Fisher information–based predictive framework for dose and time optimization in PET-guided online adaptive proton therapy,” Phys. Med. Biol. 71, 02NT02 (2026).

S. Yamamoto, T. Yamashita, M. Yoshino, K. Kamada, A. Yoshikawa, T. Nishio, J. Kataoka, “Development of a GAGG powder-based flexible scintillator sheet for surface imaging of radiation beams,” JINST 20, P12030 (2025).

Y. Tominaga, Y. Wakisaka, T. Kato, K. Yasui, R. Kato, M. Ichihara, M. Tomida, M. Sasaki, M. Oita, T. Nishio, “Improvements of lateral penumbra at various depth regions in proton pencil beam scanning with a multileaf collimator: dose verifications and plan comparisons,” Physica. Medica. 140, 105684 (2025).

H. Hirashima, Y. Matsuo, S. Ishikura, M. Nakamura, I. Nishimuchi, D. Kawahara, Y. Shimada, Y. Nakahara, T. Nishio, N. Shikama, S. Watanabe, I. Okamoto, T. Ishiba, F. Hara, T. Shien, T. Mizowaki, “A multi-institutional dummy run on segmentation variability and plan quality of stereotactic body radiotherapy for oligometastatics discase,” Physics and Imaging in Radiation Oncology 36, 100857 (2025).

A. S. Koganezawa, T. Wada, D. Hashimoto, H. Maekawa, K. Muro, M. Suitani, T. Nakashima, T. Nishio, “Measurement of shrinking immobilizing sheets for radiotherapy using a near-infrared camera,” Radiol. Phys. Technol. 18, 1164-1175 (2025).

S. Kihara, Y. Ueda, M. Morimoto, S. Tamenaga, S. Inui, A. Masaoka, Y. Nitta, M. Isono, T. Nishio, K. Konishi, “Source position evaluation using X-ray fluoroscopy of the Geneva and Venezia applicators for brachytherapy: An assessment of inter-applicator differences rooftops,” Brachytherapy 24(6), 890-899 (2025).

Y. Wakisaka, Y. Tominaga, K. Furutani, T. Nishio, “Dosimetric and Temporal Evaluation of Dynamic Collimation with Multi-Leaf Collimator in Scanned Proton Therapy: A Planning Study,” Physica. Medica. 137, 105088 (2025).

Y. Tominaga, Y. Wakisaka, T. Kato, M. Ichihara, K. Yasui, M. Sasaki, M. Oita, T. Nishio, “Commissioning of respiratory-gated 4D dynamic dose calculations for various gating widths without spot timestamp in proton pencil beam scanning,” Med. Phys. 52(8), e18026 (2025).

S. Kihara, Y. Ueda, S. Hrada, A. Masaoka, N. Kanayama, T. Ikawa, S. Inui, T. Akagi, T. Nishio, K. Konishi, “Impact of contrast-enhanced agent on segmentation using a deep learning-based software “Ai-Seg” for head and neck cancer,” Br. J. Radiol. 98, 1272-1280 (2025).

S. Yamamoto, T. Yamashita, M. Yoshino, K. Kamada, A. Yoshikawa, T. Nishio, J. Kataoka, “Development of a silver-doped zinc sulfide incorporated wearable fabric for proton beam surface imaging,” Physica. Medica. 133, 104979 (2025).

K. Ito, Y. Nakajima, N. Nakamura, Y. Ito, T. Nishio, T. Mizowaki, “Contouring compliance and variability of targets and organs at risk in spine stereotactic body Radiotherapy: A 34-Institution study,” Radiother. Oncol. 207, 110877 (2025).

T. Ono, M. Uto, Y. Mineharu, Y. Arakawa, M. Nakamura, T. Nishio, H. Igaki, K. Nihei, S. Ishikura, Y. Narita, T. Mizowaki, Brain Tumor Study Group and Radiation Therapy Study Group of the Japan Clinical Oncology Group, “Dummy run study for outlining and plan quality of intensity-modulated radiotherapy in elderly patients with newly diagnosed glioblastoma: The Japan clinical oncology group study JCOG1910 (AgedGlio-Plll),” Radiat. Oncol. 20: 32 (9 pages) (2025).

S. Kihara, S. Ohira, N. Kanayama, T. Ikawa, S. Inui, M. Isono, Y. Ueda, T. Nishio, K. Konishi, “Effects of institutional experience on plan quality in stereotactic radiotherapy using HyperArc for brain metastases,” In Vivo 39, 210-217 (2025).

Y. Wakisaka, M. Yagi, Y. Tominaga, S. Shimizu, T. Nishio, K. Ogawa, “Nuclear interaction correction based on dual-energy computed tomography in carbon-ion therapy,” Phys. Med. Biol. 70:055012 (2025).

Y. Anetai, K. Doi, H. Takegawa, Y. Koike, M. Yui, A. Yoshida, K. Hirota, K. Yoshida, T. Nishio, J. Kotoku, M. Nakamura, S. Nakamura, “Diffusion equation quantification: selective enhancement 1 algorithm for bone metastasis lesions in CT images,” Phys. Med. Biol. 69(24):245007 (2024).

S. Ota, K. Yasui, T. Ogata, Y. Mori, T. Nishio, N. Tohyama, H. Okamoto, M. Kurooka, K. Shimomura, T. Kojima, H. Onishi, “Clinical workload profile of radiotherapy technology and medical physics professionals at particle therapy centers: a national survey in Japan,” J. Radiat. Res. 66(1), 52-64 (2024).

M. Yamanaka, T. Nishio, K. Iwabuchi, H. Nagata, “A novel internal target volume definition based on velocity and time of respiratory target motion for external beam radiotherapy,” Radiol. Phys. Technol. 17(4), 843-853 (2024).

N. Hamatani, M. Yagi, S. Shimizu, N. Ishino, M. Shimizu, Y. Kuwana, T. Tsubouchi, M. Takashina, T. Miyoshi, T. Nomura, T. Toyoda, M. Umezawa, T. Nishio, M. Koizumi, K. Ogawa, T. Kanai, “Investigation of ionization chamber characteristics for ultrahigh-dose-rate scanned carbon-ion beams,” In Vivo 38(5), 2220-2227 (2024).

R. Yamada, T. Nishio, D. Kinkawa, T. Tanaka, M. Omura, Y. Tabata, H. Yoshimura, J. Kataoka, “Preliminary study of luminescence phenomena from various materials under ultra-high dose rate proton beam irradiation for dose management,” Sci. Rep. 14:14504 (2024).

H. Nakano, T. Shiinoki, S. Tanabe, T. Nakano, S. Utsunomiya, M. Kaidu, T. Nishio, H. Ishikawa, “Assessing Tumor Volumetric Reduction with Consideration for Setup Errors Based on Mathematical Tumor Model and Microdosimetric Kinetic Model in Single-Isocenter VMAT for Brain Metastases,” Phys. Eng. Sci. Med. 46(2), 945-953 (2024).

S. Yamamoto, T. Yamashita, M. Yoshino, K. Kamada, A. Yoshikawa, T. Nishio, J. Kataoka, “Scintillation phenomena in polyester fabric and clothing via radiation irradiation and their utilization in surface proton beam spot imaging,” Sci. Rep. 14:13494 (2024).

M. Yagi, S. Shimizu, N. Hamatani, T. Miyoshi, T. Nomura, T. Toyoda, M. Nakatani, T. Tsubouchi, M. Shimizu, Y. Kuwana, M. Umezawa, M. Takashina, T. Nishio, M. Koizumi, K. Ogawa, T. Kanai, “Development and Characterization of a Dedicated Dose Monitor for Ultrahigh-Dose-Rate Scanned Carbon-Ion Beams,” Sci. Rep. 14:11574 (2024).

S. Nakamura, M. Takemori, T. Nakaichi, Y. Shuto, T. Kashihara, K. Iijima, T. Chiba, H. Nakayama, Y. Urago, S. Nishina, Y. Kobayashi, H. Kishida, S. Imamichi, K. Takahashi, M. Masutani, H. Okamoto, T. Nishio, J. Itami, H. Igaki, “A method for delivering the required neutron fluence in an accelerator-based boron neutron capture therapy system employing a lithium target,” Sci. Rep. 14:11253 (2024).

S. Ohira, J. Mochizuki, T. Niwa, K. Endo, M. Minamitani, H. Yamashita, A. Katano, T. Imae, T. Nishio, M. Koizumi, K. Nakagawa, “Variation in Housfiled unit calculatied using dual-energy computed tomography: comparison of dual-layer, dual-source, and fast kilovoltage switching technique,” Radiol. Phys. Technol. 17(2), 458-466 (2024).

S. Ohira, H. Yamashita, M. Minamitani, S. Sawayanagi, M. Ogita, T. Imae, Y. Nozawa, T. Ohta, K. Nawa, T. Nishio, M. Koizumi, K. Nakagawa, “Relationship between hydrogel spacer distribution and dosimetric parameters in linear accelerator based stereotactic body radiotherapy for prostate cancer,” J. Appl. Clin. Med. Phys. e14294 (2024).

M. Nakao, S. Ozawa, H. Miura, K. Yamada, M. Hayata, K. Hayashi, D. Kawahara, T. Nakashima, Y. Ochi, T. Okumura, H. Kunimoto, A. Kawakubo, H. Kusaba, H. Nozaki, K. Habara, N. Tohyama, T. Nishio, M. Nakamura, T. Minemura, H. Okamoto, M. Ishikawa, M. Kurooka, H. Shimizu, K. Hotta, M. Saito, M. Nakano, M. Tsuneda, Y. Nagata, “CT number calibration audit in photon radiation therapy,” Med. Phys. 51(3), 1571-1582 (2024).

S. Ohira, T. Ikawa, N. Kanayama, M. Minamitani, S. Kihara, S. Inui, Y. Ueda, M. Miyazaki, H. Yamashita, T. Nishio, M. Koizumi, K. Nakagawa, K. Konishi, “Dual-energu computed tomography-based iodine concertration as a predictor of histopathological response to preoperative chemoradiotherapy for pancreatic cancer,” J. Radiat. Res. 64(6), 940-947 (2023).

Y. Anetai, K. Doi, H. Takegawa, Y. Koike, T. Nishio, M. Nakamura, “Extracting the gradient componet of the gamma index using the Lie derivantive method,” Phys. Med. Biol. 68:195028 (2023).

H. Nakano, T. Shiinoki, S. Tanabe, S. Utsunomiya, T. Takizawa, M. Kaidu, T. Nishio, H. Ishikawa, “Mathmatical model combined with microdosimetric kinetic model for tumor volume calculation in stereotactic body radiation therapy,” Sci. Rep. 13:10981 (2023).

S. Nakamura, S. Imamichi, K. Shimada, M. Takemori, Y. Kanai, K. Iijima, T. Chiba, H. Nakayama, T. Nakaichi, S. Mikasa, Y. Urago, T. Kashihara, K. Takahashi, T. Nishio, H. Okamoto, J. Itami, M. Ishiai, M. Suzuki, H. Igaki, M. Masutani, “Relative biological effectiveness for epithermal neutron beam contaminated with fast neutrons in the linear accelerator-based boron neutron capture therapy system coupled to a solid-state lithium target,” J. Radiat. Res. 64(4), 661-667 (2023).

S. Ohira, T. Ikawa, S. Inui, N. Kanayama, Y. Ueda, M. Miyazaki, T. Nishio, M. Koizumi, K. Konishi, “Improvement of target coverage using automated non-coplanar volumetric modulated arc therapy planning in stereotactic radiotherapy for cervical metastatic spinal tumors,” Med. Dosim. 48(3), 197-201 (2023).

M. Nakamura, D. Zhou, T. Minemura, S. Kito, H. Okamoto, N. Tohyama, M. Kurooka, Y. Kumazaki, M. Ishikawa, C. H. Clark, E. Miles, J. Lehmann, N. Andratschke, S. Kry, S. Ishikura, T. Mizowaki, T. Nishio, “A virtual aduit system for intensity-modulated radation therapy credentialing in Japannese Clinical Oncology Group clinical trials: a pilot study,” J. Appl. Clin. Med. Phys. 24(6), e14040 (2023).

Y. Yamamoto, S. Ohira, N. Kanayama, S. Inui, Y. Ueda, Y. Koike, M. Miyazaki, T. Nishio, M. Koizumi, K. Konishi, “Comparison of dosimetric parameters and robustness for rotational errors in fractionated stereotactic irradiation using automated noncoplanar volumetric modulated arc therapy for patients with brain metastases: single‑ versus multi‑isocentric technique,” Radiol. Phys. Technol. 16(2), 310-318 (2023).

K. Doi, H. Takegawa, M. Yui, Y. Anetai, Y. Koike, S. Nakamura, N. Tanigawa, M. Koizumi, T. Nishio, “Deep learning-based detection of patinets with bone metastasis from Japanese radiology reports,” Jpn. J. Radiol. 41(8), 900-908 (2023).

H. Okamoto, N. Murakami, F. Isohashi, T. Kasamatsu, Y. Hasumi, H. Kobayashi, M. Ishikawa, M. Nakamura, T. Nishio, H. Igaki, S. Ishikura, N. Yaegashi, T. Mizowakim, Y. Nishimura, T. Toita, “Plan quality association between dummy run and individual case review in a prospective multi-institutional clinical trial of postoperative cervical cancer patients treated with intensity-modulated radiotherapy: Japan clinical Oncology Group study (JCOG1402),” Radiother. Oncol. 183, 109630 (2023).

H. Nakano, T. Shiinoki, S. Tanabe, T. Nakano, T. Takizawa, S. Utsunomiya, M. Sakai, S. Tanabe, A. Ohta, M. Kaidu, T. Nishio, H. Ishikawa, “Multicomponent Mathematical Model for Tumor Volume Calculation with Setup Error Using Single-Isocenter Stereotactic Radiotherapy for Multiple Brain Metastases,” Phys. Eng. Sci. Med. 46(2), 945-953 (2023).

S. Ohira, T. Ikawa, N. Kanayama, S. Inui, Y. Ueda, M. Miyazaki, T. Nishio, M. Koizumi, K. Konishi, “Dose reduction of hippocampus using HyperArc planning in postoperative radiotherapy for primary brain tumors,” Med. Dosim. 48(2), 67-72 (2023).

M. Yagi, S. Shimizu, K. Minami, N. Hamatani, T. Tsubouchi, M. Takashina, M. Umezawa, T. Nomura, W. Mukoyoshi, T. Nishio, M. Koizumi, K. Ogawa, T. Kanai, “Ultra-high Dose-rate Carbon-ion Scanning Beam with a Compact Medical Synchrotron Contributing to Further Development of FLASH Irradiation,” Anticancer Research 43(2), 581-589 (2023).

M. Takemori, S. Nakamura, T. Sofue, M. Ito, T. Goka, Y. Miura, K. Iijima, T. Chiba, H. Nakayama, T. Nakaichi, S. Mikasa, Y. Takano, M. Kon, Y. Shuto, Y. Urago, M. Nishitani, T. Kashihara, K. Takahashi, N. Murakami, T. Nishio, H. Okamoto, W. Chang, H. Igaki, “Failure modes and effects analysis study for accelerator-based Boron Neutron Capture Therapy,” Med. Phys. 50, 424-439 (2023).

T. Nakaichi, S. Nakamura, K. Ito, K. Takahashi, M. Takemori, T. Kashihara, K. Kunito, K. Iijima, T. Chiba, H. Nakayama, S. Mikasa, T. Nishio, H. Okamoto, J. Itami, H. Kurihara, H. Igaki, “Analyzing spatial distribution between 18F-Fluorodeoxyglucose and 18F-Boronophenylalanine positron emission tomography to investigate selection indicators for boron neutron capture therapy,” EJNMMI Phys. 9(1), 89 (20 pages) (2022).

D. Kawahara, M. Tsuneda, S. Ozawa, H. Okamoto, M. Nakamura, T. Nishio, Y. Nagata, “Deep learning-based auto segmentation using generative adversarial network on magnetic resonance images obtained for head and neck cancer patients,” J. Appl. Clin. Med. Phys. 23(5), e13579 (2022).

D. Kawahara, M. Tsuneda, S. Ozawa, H. Okamoto, M. Nakamura, T. Nishio, A. Saito, Y. Nagata, “Stepwise deep neural network (stepwise-net) for head and neck auto-segmentation on CT images,” Comp. Bio. Med. 143, 105295 (2022).

A. Ohashi, T. Nishio, A. Saito, D. Hashimoto, H. Maekawa, Y. Murakami, S. Ozawa, M. Suitani, M. Tsuneda, H. Watanabe, K. Ikenaga, Y. Nagata, “Baseline drift vector of multiple points on body surface using a near-infrared camera,” Phys. Eng. Sci. Med. 45, 143-155 (2022).

S. Inui, T. Nishio, Y. Ueda, S. Ohira, H. Ueda, H. Washio, S. Ono, M. Miyazaki, M. Koizumi, K. Konishi, “Machine log file-based dose verification using novel iterative CBCT reconstruction algorithm in commercial software during volumetric modulated arc therapy for prostate cancer patients,” Physica. Medica. 92, 24-31 (2021).

H. Matsubara, T. Ezura, Y. Hashimoto, K. Karasawa, T. Nishio, M. Tsuneda, “Study of feasible and safe condition for total body irradiation (TBI) using cardiac implantable electronic devices (CIEDs),” J. Radiat. Res. 62(6), 1006-1014 (2021).

M. Tsuneda, T. Nishio, T. Ezura, K. Karasawa, “Plastic scintillation dosimeter with a conical mirror for measuring 3D dose distribution,” Med. Phys. 48(10), 5639-5650 (2021).

S. Nakamura, H. Igaki, M. Ito, S. Imamichi, T. Kashihara, H. Okamoto, S. Nishioka, K. Iijima, T. Chiba, H. Nakayama, M. Takemori, Y. Abe, T. Kaneda, K. Takahashi, K. Inaba, K. Okuma, N. Murakami, Y. Nakayama, M. Masutani, T. Nishio, J. Itami, “Neutron flux evaluation model provided in the accelerator-based boron neutron capture therapy system employing a solid-state lithium target,” Sci. Rep. 11, 8090 (2021).

N. Ishino, N. Hamatani, T. Tsubouchi, M. Takashina, S. Shimizu, Y. Kuwana, M. Shimizu, M. Umezawa, M. Yagi, T. Kanai, T. Nishio, “Validation of ion recombination correction factor of FLASH monitor for clinical application,” PTCOG-AO 2025, Hong Kong, November 7 – 9, 2025.

A. S. Koganezawa, K. Muro, D. Hashimoto, H. Maekawa, M. Suitani, T. Wada, T. Nakashima, T. Nishio, “Precision of tracking moving body surface markers via near-infrared camera for respiratory monitoring in radiotherapy,” IUPESM World Congress on Medical Physics and Biomedical Engineering, Adelaide, September 29 – October 4, 2025.

J. Nakao, T. Masuda, T. Toshito, T. Aso, T. Nishio, “Determination of irradiation dose aned measurement time for range verification using PET: toward establishing “pre-irradiation” procedure in proton therapy,” PTCOG 63, Buenos Aires, June 2 – 7, 2025.

S. Nomura, N. Kamiguchi, S. Tada, T. Yorita, H. Kanda, K. Minami, T. Nishio, M. Fukuda, “Establishing a FLASH research nozzle with double scattering method,” PTCOG 63, Buenos Aires, June 2 – 7, 2025.

N. Ishino, N. Hamatani, T. Tsubouchi, M. Takashina, M. Yagi, S. Shimizu, Y. Kuwana, M. Shimizu, T. Nomura, T. Toyoda, M. Umezawa, Y. Okabe, T. Kanai, T. Nishio, “Fundamental characteristic of monitor for carbon FLASH therapy about general recombination,” The 10th JSMP-KSMP Joint Meeting on Medical Physics, Nagoya, September 20 – 22, 2024.

R. Yamada, T. Nishio, D. Kinkawa, T. Tanaka, M. Omura, Y. Tabata, H. Yoshimura, J. Kataoka, “Study of visible light luminescence from various materials at ultra-high dose rate proton beam irradiation for dose management,” The 10th JSMP-KSMP Joint Meeting on Medical Physics, Nagoya, September 20 – 22, 2024.

Y. Yamaguchi, T. Masuda, T. Toshito, T. Nishio, “Estimation of 3D dose distribution using planar PET system in proton therapy,” The 10th JSMP-KSMP Joint Meeting on Medical Physics, Nagoya, September 20 – 22, 2024.

S. Kihara, S. Ohira, N. Kanayama, T. Ikawa, S. Inui, M. Isono, Y. Nitta, Y. Uchida, T. Nishio, K. Konishi, “The influence of institutional experience on dosimetric oucomes in HyperArc stereotactic radiotherapy for brain metastasis,” The 10th JSMP-KSMP Joint Meeting on Medical Physics, Nagoya, September 20 – 22, 2024.

Y. Tominaga, T. Kato, T. Uenaka, Y. Tokuhiro, T. Nishio, “Comparisons of dose distributions, irradiation time, and optimization time for various beam parameters in arc proton pencil beam scanning,” 3rd JSRT-JSMP Joint International Conference on Radiological Physics and Technology (3rd ICRPT), Yokohama, April 11 – 14, 2024.

H. Nakano, T. Shiinoki, S. Tanabe, S. Utsunomiya, T. Nishio, “Assessing tumor volume changes varying the dse delivery time using a novel mathematical model in stereotactic body radiation therapy for non-small cell lung cancer,” 3rd JSRT-JSMP Joint International Conference on Radiological Physics and Technology (3rd ICRPT), Yokohama, April 11 – 14, 2024.

M. Yagi, S. Shimizu, K. Minami, N. Hamatani, T. Miyoshi, K. Fujita, T. Tsubouchi, T. Nomura, M. Shimizu, Y. Kuwana, M. Umezawa, M. Takashina, Y. Okabe, T. Nishio, M. Koizumi, K. Furutani, C. Beltran, K. Ogawa, T. Kanai, “Validation of filed expansion toward compact medical synchrotoron-based ultra-high dose-rate carboin-ion radiotherapy,” FRPT2023, Tronto, December 5 – 7, 2023.

M. Kato, T. Nishio, T. Masuda, T. Toshito, “Measurement of nuclear reaction cross sections of 10C by the annihilation gamma-ray detection system nBOLPs,” PTCOG 61, Madrid, June 10 – 16, 2023.

A. Owada, D. Sakata, Y. Muroya, T. Hosokai, Y. Mizuta, H. Yamaguchi, T. Nishio, “Investigation of longitudinal magnetic field effects on OH radical,” 2nd JSRT-JSMP Joint International Conference on Radiological Physics and Technology (2nd ICRPT), Yokohama, April 13 – 16, 2023.

M. Kato, T. Nishio, T. Masuda, T. Toshito, “Measurement of the nuclear reaction cross sections of positron-emitting nuclides using the annihilation gamma-ray detection system nBOLPs,” 2nd JSRT-JSMP Joint International Conference on Radiological Physics and Technology (2nd ICRPT), Yokohama, April 13 – 16, 2023.

H. Yamaguchi, D. Sakata, N. Hoang, I. Sebastien, T. Nishio, “Development of a DNA damages repair model considered alternative non-homologous end joining,” 2nd JSRT-JSMP Joint International Conference on Radiological Physics and Technology (2nd ICRPT), Yokohama, April 13 – 16, 2023.

M. Yagi, S. Shimizu, K. Minami, N. Hamatani, T. Tsubouchi, M. Takashina, M. Umezawa, T. Nomura, W. Mukoyoshi, T. Miyoshi, Y. Okabe, T. Nishio, M. Koizumi, K. Ogawa, T. Kanai, “The ability of a compact-type medical synchrotron on ultra-high dose-rate scanned carbon-ion beam for flash research,” FRPT2022, Barcelona, Spain, November 30-December 2, 2022.

N. Hamatani, M. Yagi, T. Tsubouchi, M. Takashina, S. Shimizu, K. Minami, M. Umezawa, T. Nomura, W. Mukoyoshi, T. Miyoshi, Y. Okabe, T. Nishio, M. Koizumi, K. Ogawa, T. Kanai, “Confirmation of recombination effect on ionization chambers with ultra-high dose rate carbon ion beam,” FRPT2022, Barcelona, Spain, November 30-December 2, 2022.

H. Nakano, T. Takizawa, D. Kawahara, S. Tanabe, S. Utsunomiya, M. Kaidu, K. Maruyama, S. Utsunomiya, M. Kaidu, K. Maruyama, S. Takeuchi, K. Onda, M. Koizumi, T. Nishio, H. Ishikawa, “Radiobiological evaluation considering the treatment time with CyberKnife stereotactic radiosurgery for brain metastases,” 1st JSRT-JSMP Joint International Conference on Radiological Physics and Technology (1st ICRPT), Yokohama, April 14 – 17, 2022.

M. Tsuneda, T. Nishio, T. Uno, “Plastic scintillation dosimeter with a conical mirror for measureing 4D dose distribution,” 1st JSRT-JSMP Joint International Conference on Radiological Physics and Technology (1st ICRPT), Yokohama, April 14 – 17, 2022.

T. Masuda, T. Nishio, T. Toshito, “Fast analytical PET simulation toward in vivo range monitoring for scanned proton beam,” 1st JSRT-JSMP Joint International Conference on Radiological Physics and Technology (1st ICRPT), Yokohama, April 14 – 17, 2022.

M. Kato, T. Nishio, T. Masuda, T. Toshito, “Proton pencil beam irradiation position accuracy using auto-activated image information,” 1st JSRT-JSMP Joint International Conference on Radiological Physics and Technology (1st ICRPT), Yokohama, April 14 – 17, 2022.

西尾禎治、“Radiation for Health and Peacs‐医学物理学が拓く安全で持続可能な医療技術‐”、オーガナイズドセッション、第65回日本生体医工学会大会、仙台、2026年6月5-7日

T. Nishio, “From a university professor’s perspective: The essential knowledge and ways of self-level up that my peers and younger generations should acquire,” JSMP educational affairs committee program, The 131th Scientific Meeting of JSMP, Yokohama, April 16 – 19, 2026.

K. Hakamada, T. Nishio, Y. Tominaga, Y. Wakisaka, A. Takeshita, D. Taniguchi, R. Yoshii, “Research on the biological effects of therapeutic-dose proton irradiation in live fish,” The 131th Scientific Meeting of JSMP, Yokohama, April 16 – 19, 2026.

H. Chihara, T. Nishio, R. Shimono, S. Tanaka, N. Hamatani, T. Tsubouchi, M. Takashina, M. Yagi, “A reconstruction methdod for reducing multiple coulomb scattering artifacts in heavy-ion CT imaging,” The 131th Scientific Meeting of JSMP, Yokohama, April 16 – 19, 2026.

M. Ichihara, A. Tanaka, K. Kojima, T. Sakai, M. Nakanishi, Y. Takaishi, T. Nishio, “Developmnet of dynamic tumor tracking accuracy verification system for a gimbaled linac system,” The 131th Scientific Meeting of JSMP, Yokohama, April 16 – 19, 2026.

Y. Wakisaka, M. Nakata, Y. Tominaga, Y. Miyasaka, T. Nishio, T. Iwai, M. Yamamoto, “Application of dynamic multi-leaf collimator in intensity-modulated proton therapy for head and neck cancer: dosimetric evaluation and experimental verification,” The 131th Scientific Meeting of JSMP, Yokohama, April 16 – 19, 2026.

西尾禎治、“医学物理学研究と医療機器開発”、浜松医科大学スタートアップ支援室主催講演会、2026年2月26日

西尾禎治、“高精度放射線治療における医学物理学研究”、山形大学医学部「High Touch Meeting」講演、2026年2月16日

西尾禎治、山野翼、鳴滝悠希、中尾純、坂根拓弥、中前一陽、歳藤利行、増田孝充、“超高線量率陽子線治療における短半減期陽電子放出核生成量分布イメージングの研究”、第130回日本医学物理学会学術集会、千葉、2025年9月19-21日

西尾禎治、坂根拓弥、酒井剛志、西澤怜央、生田崚真、山田遼作、“時間軸を含む多様性線量分布計測システム「Assemble Block Imaging system (ABIs)」の開発”、第130回日本医学物理学会学術集会、千葉、2025年9月19-21日

鳴滝悠希、増田孝充、歳藤利行、西尾禎治、“陽子線照射における対向型平面PET検出器での陽電子放出核生成分布計測の散乱線補正に関する研究”、第130回日本医学物理学会学術集会、千葉、2025年9月19-21日

坂根拓弥、増田孝充、永田毅、歳藤利行、土井健太郎、西尾禎治、“深層学習を用いたノイズ除去による陽子線照射領域可視化PET画像の高精度化”、第130回日本医学物理学会学術集会、千葉、2025年9月19-21日

酒井剛志、壽賀正城、西尾禎治、“水等価ファントムの発光現象を利用したFLASH重粒子線線量分布測定システムの開発”、第130回日本医学物理学会学術集会、千葉、2025年9月19-21日

山野翼、増田孝充、歳藤利行、西尾禎治、“超高線量率陽子線照射における短半減期陽電子放出核種のTime-ActivityCurve寄与評価”、第130回日本医学物理学会学術集会、千葉、2025年9月19-21日

笠井勇作、中村哲志、西尾禎治、竹森望弘、村田誉、首藤康則、芝田祥宏、伍賀友紀、井垣浩、“BNCTの治療適用部位の拡大を考慮した加速器型BNCT装置の線量QAの許容値に関する検討”、第21回日本中性子捕捉療法学会学術大会、長崎、2025年7月25-26日

村田誉、中村哲志、柏原大朗、高橋加奈、竹森望弘、遠藤花菜、首藤康則、笠井勇作、中市徹、芝田祥宏、国遠幸司、伍賀友紀、西尾禎治、伊藤公輝、井垣浩、“FBPA-PETとFDG-PETにおける腫瘍内空間分布の分析ラジオミクス特徴量を用いた解析”、第21回日本中性子捕捉療法学会学術大会、長崎、2025年7月25-26日

仁科柊花、中村哲志、竹森望弘、遠藤花菜、柏原大朗、首藤康則、笠井勇作、村田誉、国遠幸司、中村勝、林利充、西尾禎治、東家亮、井垣浩、“深層学習を用いたホウ素中性子捕捉療法の全身線量分布予測法の研究開発”、第21回日本中性子捕捉療法学会学術大会、長崎、2025年7月25-26日

西尾禎治、“「がんの陽子線治療で光る人体」を観測する”、中国・四国広域がんプロ養成コンソーシアム 放射線治療・緩和的放射線治療医コース講演会、2025年7月22日

木原彩花、上田悦弘、原田秀一、正岡祥、金山尚之、井川俊樹、乾翔輝、赤城卓、西尾禎治、小西浩司、“造影CT画像を用いたAi-segによる頭頸部OAR自動輪郭抽出モデルの精度検証”、日本放射線腫瘍学会第38回高精度放射線外部照射部会学術大会、札幌、2025年5月24-25日

Y. Kasai, S. Nakamura, T. Nishio, N. Hu, A. Takeuchi, S. Suzuki, M. Takemori, Y. Shibata, T. Goka, H. IGaki, “Establishing QA program for accelerator-based boron neutron capture therapy system,” The 129th Scientific Meeting of JSMP, Yokohama, April 10 – 13, 2025.

Y. Wakisaka, Y. Tominaga, T. Nishio, “Dynamic collimation with multi-leaf collimator in scanned proton therapy for liver cancer,” The 129th Scientific Meeting of JSMP, Yokohama, April 10 – 13, 2025.

J. Nakao, T Masuda, T. Nishio, T. Aso, T. Toshito, “Determination of irradiation dose and measurement time for range verification using PET: toward establishing “pre-irradiation” procedure in proton therapy,” The 129th Scientific Meeting of JSMP, Yokohama, April 10 – 13, 2025.

Y. Tominaga, Y. Wakisaka, T. Kato, M. Oita, T. Nishio, “Experimental validation of 4D dynamic dose calculation method to deal with simulated amplitude changes over time in scanned proton therapy,” The 129th Scientific Meeting of JSMP, Yokohama, April 10 – 13, 2025.

N. Ishino, N. Hamatani, T. Tsubouchi, M. Takashina, M. Yagi, Y. Kuwana, M. Shimizu, T. Toyoda, T. Kanai, T. Nishio, “Verification on LET dependence of ion recombination correction factor for FLASH monitor,” The 129th Scientific Meeting of JSMP, Yokohama, April 10 – 13, 2025.

西尾禎治、“PET技術”、アダプティブ放射線治療と周辺技術、日本放射線腫瘍学会第12回放射線治療・物理セミナー、北海道（オンライン開催）、2024年7月13日

西尾禎治、“高精度放射線治療における医学物理学研究”、東北広域次世代がんプロ養成プラン 令和6年度新潟大学医学物理セミナー、2024年6月19日

西尾禎治、“阪大における医学物理研究の紹介”、中国・四国広域がんプロ養成コンソーシアム 放射線治療・緩和的放射線治療医コース講演会、2024年5月21日

T. Nishio, “Leading science and technology for undiscovered radiation medicine,” Panelist, Joint Symposium 3, The 127th Scientific Meeting of JSMP, Yokohama, April 11 – 14, 2024.

Y. Tokuhiro, Y. Tominaga, T. Uenaka, T. Nishio, “Availability of beam log data based dose distribution in proton beam scanning irradiation for patient QA,” The 127th Scientific Meeting of JSMP, Yokohama, April 11 – 14, 2024.

K. Komatshbara, T. Nishio, D. Kinkawa, M. Yagi, S. Tanaka, “A study of acquisition of carbon ion CT image using BGO scintillator and CMOS camera,” The 127th Scientific Meeting of JSMP, Yokohama, April 11 – 14, 2024.

Y. Anetai, K. Doi, H. Takegawa, Y. Koike, T. Nishio, M. Nakamura, “How to evaluate the high dose-gradient region: A proposition method using Lie derivative,” The 127th Scientific Meeting of JSMP, Yokohama, April 11 – 14, 2024.

S. Nishikawa, T. Nishio, T. Uenaka, Y. Nakanishi, S. Nakamura, “Accelerating simulation of epithermal neutron dose distribution using deep learning,” The 127th Scientific Meeting of JSMP, Yokohama, April 11 – 14, 2024.

Y. Nakanishi, T. Nishio, S. Nishikawa, N. Ko, A. Urushiyama, “Research on surface neutron dose distribution measurement technology in BNCT,” The 127th Scientific Meeting of JSMP, Yokohama, April 11 – 14, 2024.

西尾禎治、“放射線治療における医学物理学・放射線技術学研究”、第61回群馬放射線腫瘍研究会、前橋、2024年2月10日

西尾禎治、“FLASH陽子線照射における長短波長電磁波イメージングの研究”、応用物理学会放射線分科会医療放射線技術研究会、東京、2024年1月6日

恒田雅人、森慎一郎、西尾禎治、“汎用型リニアックの品質管理ソフトウェアの開発”、日本放射線腫瘍学会第36回学術大会、横浜、2023年11月30日-12月2日

上中ともみ、冨永裕樹、徳弘雄大、西尾禎治、“深層学習機能を用いたデノイズイング処理陽子線線量分布モンテカルロ計算法の研究”、日本放射線腫瘍学会第36回学術大会、横浜、2023年11月30日-12月2日

徳弘雄大、冨永裕樹、上中ともみ、西尾禎治、“陽子線スキャニングログ線量分布におけるビームモニタ中心での線量精度低下の検証”、日本放射線腫瘍学会第36回学術大会、横浜、2023年11月30日-12月2日

冨永裕樹、加藤貴弘、徳弘雄大、笈田将皇、西尾禎治、“陽子線スキャニング治療におけるログファイルを用いた推定臨床線量分布の後ろ向き評価”、日本放射線腫瘍学会第36回学術大会、横浜、2023年11月30日-12月2日

西尾禎治、“陽子線治療の“観える化”はどうなの？〜意味あるのかな〜”、シンポジウム4、次世代の治療方法：粒子線治療の進化と展望、第126回日本医学物理学会学術大会、広島、2023年9月15-17日

田中爽大、西尾禎治、増田孝充、加藤雅貴、歳藤利行、須藤諒太、“陽子線スキャニング照射におけるPET画像の評価”、第60回アイソトープ・放射線研究発表会、東京、2023年7月5-7日

須藤諒太、西尾禎治、増田孝充、加藤雅貴、田中爽大、歳藤利行、“陽子線照射による体内生成陽電子放出核を利用した人体構成要素計測法の研究”、第60回アイソトープ・放射線研究発表会、東京、2023年7月5-7日

加藤雅貴、西尾禎治、増田孝充、歳藤利行、“陽子線治療における体内での10C生成反応断面積の測定”、第60回アイソトープ・放射線研究発表会、東京、2023年7月5-7日

H. Nakano, T. Shiinoki, S. Tanabe, T. Nakano, T. Takizawa, S. Utsunomiya, M. Sakai, S. Tanabe, M. Kaidu, T. Nishio, H. Ishikawa, “Mathmatical model for tumor volume calculation with setup error using single-isocenter stereotactic radiotherapy,” The 125th Scientific Meeting of JSMP, Yokohama, April 13 – 16, 2023.

T. Tanaka, T. Nishio, T. Masuda, M. Yagi, H. Kitamori, D. Kinkawa, “Research and development of multipurpose 2D radiation measurement system including time axis,” The 125th Scientific Meeting of JSMP, Yokohama, April 13 – 16, 2023.

M. Omura, T. Nishio, H. Kitamori, Y. Akino, A. Urushiyama, M. Watanabe, D. Kinkawa, T. Tanaka, Y. Nakanishi, “Study of real-time patient body surface dose distribution measurement during radiotherapy,” The 125th Scientific Meeting of JSMP, Yokohama, April 13 – 16, 2023.

D. Kinkawa, T. Nishio, T. Tanaka, K. Komatsubara, “Development of carbon ion CT imaging system,” The 125th Scientific Meeting of JSMP, Yokohama, April 13 – 16, 2023.

A. Tanaka, T. Nishio, T. Masuda, M. Kato, R. Sudo, T. Toshito, “Assessment of PET images in proton scanning irradiation,” The 125th Scientific Meeting of JSMP, Yokohama, April 13 – 16, 2023.

R. Sudo, T. Nishio, T. Masuda, M. Kato, A. Tanaka, T. Toshito, “Research on measurement of human body components using positron-emitting nuclei generated in the body by proton irradiation,” The 125th Scientific Meeting of JSMP, Yokohama, April 13 – 16, 2023.

K. Doi, Y. Anetai, H. Takegawa, Y. Koike, S. Nakamura, M. Koizumi, T. Nishio, “Analysis of osteolytic bone metastatic lesions in CT images using diffusion equation and vector analysis,” The 125th Scientific Meeting of JSMP, Yokohama, April 13 – 16, 2023.

田中爽大、西尾禎治、増田孝充、加藤雅貴、歳藤利行、須藤諒太、“陽子線スキャニング照射におけるPET画像の評価”、第59回アイソトープ・放射線研究発表会、オンライン、2022年7月6-8日

須藤諒太、西尾禎治、増田孝充、加藤雅貴、田中爽大、歳藤利行、“陽子線照射による体内生成陽電子放出核を利用した人体構成要素計測法の研究”、第59回アイソトープ・放射線研究発表会、オンライン、2022年7月6-8日

加藤雅貴、西尾禎治、増田孝充、歳藤利行、“自己放射化画像を用いた陽子線ペンシルビーム照射位置精度評価法”、第59回アイソトープ・放射線研究発表会、オンライン、2022年7月6-8日

西尾禎治、“JSMP123：未来への潮流と変革”、JRC2022合同開会式基調講演、横浜、2022年4月14-17日

西尾禎治、“より良い放射線診療のためにJSMPが果たす役割とは？”、シンポジウム3 JSRTが進むべき未来 -より良い放射線診療を目指して-、第78回日本放射線技術学会総会学術大会、横浜、2022年4月14-17日

K. Ryu, T. Masuda, T. Nishio, “Denoising Monte Carlo dose distribution using deep learning,” The 123th Scientific Meeting of JSMP, Yokohama, April 14 – 17, 2022.

S. Inui, Y. Takahashi, Y. Ueda, S. Ohira, S. Ono, M. Miyazaki, H. Shiomi, T. Nishio, M. Koizumi, K. Konishi, “Dosimetric comparison of helical tomotherapy and HyperArc treatment plans in angiosarcoma of the scalp,” The 123th Scientific Meeting of JSMP, Yokohama, April 14 – 17, 2022.

西尾禎治、“陽子線治療技術の研究開発”、第18回放射線プロセスシンポジウム、東京（WEB開催）、2021年11月16-17日

石川正純、峯村俊行、遠山尚紀、小野智博、高橋良、岡本裕之、西尾禎治、戸板孝文、“線量分布解析における統計学的判定基準に関する考察”、日本放射線腫瘍学会第34回学術大会、仙台（WEB開催）、2021年11月12-14日

西尾禎治、“がんの放射線治療と医学物理士”、2021 IINAS Forum、筑波（WEB開催）、2021年11月5日

西尾禎治、増田孝充、山下春男、稲庭拓、溝脇尚志、白土博樹、歳藤利行、“リアルタイム体内線量可視化画像誘導至適陽子線治療システムの研究開発”、第17回日本粒子線治療臨床研究会、豊橋、2021年10月16日

加藤雅貴、増田孝充、西尾禎治、“PETを用いた陽子ペンシルビームプレ照射による照射精度評価法の開発”、第17回日本粒子線治療臨床研究会、豊橋、2021年10月16日

須釜裕也、荒屋正幸、藤本宏幸、関祐、山口喬、柴垣元太郎、西尾禎治、大西洋、“陽子線ラインスキャニング法における複数厚のレンジシフタによるビームサイズおよび照射時間の最適化”、第17回日本粒子線治療臨床研究会、豊橋、2021年10月16日

千原日菜都, "A Reconstruction Method for Reducing Multiple Coulomb Scattering Artifacts in Heavy-Ion CT Imaging", 第131回日本医学物理学会学術大会 学生奨励賞 銅賞、2026年4月

土井健太郎, "Deep learning-based detection of patinets with bone metastasis from Japanese radiology reports", 大阪大学令和7年度保健学専攻優秀論文賞、2026年2月

山中将史, "A novel internal target volume definition based on velocity and time of respiratory target motion for external beam radiotherapy", AFOMP journal Prize for the Best Paper , July, 2025.

笠井勇作, "Establishing QA program for accelerator-based boron neutron capture therapy system", JSMP 129 Presidents Award (Bronze medal), April, 2025.

山中将史, "A novel internal target volume definition based on velocity and time of respiratory target motion for external beam radiotherapy", Radiological Physics and Technology, RPT Best Paper Award (Radiation Therapy Physics), April, 2025

山田遼作, "Preliminary study of luminescence phenomena from various materials under ultra-high dose rate proton beam irradiation for dose management", 令和6年度保健学専攻優秀論文賞、2025年2月

西川祥太郎, "Accelerating simulation of epithermal neutron dose distribution using deep learning", JSMP 127 Students Award、April, 2024.

田中武斗, "Research and development of multipurpose 2D radiation measurement system including time axis", JSMP 125 Students Award、April, 2023.

金川大輝, "Development of carbon ion CT imaging system", JSMP 125 Students Award、April, 2023.

八木雅史, "Ultra-high Dose-rate Carbon-ion Scanning Beam with a Compact Medical Synchrotron Contributing to Further Development of FLASH Irradiation", FRPT2022 Best E-Poster Presentation Prizes、December, 2022.

劉晃太朗, "Denoising Monte Carlo dose distribution using deep learning", JSMP 123 Presidents Award (Bronze medal)、April, 2022.

国立がん研究センター研究開発費（秋元班）西尾禎治（作成委員）、“強度変調粒子線治療ガイドライン（2026年版）”、金原出版、2026年1月20日発行

西尾禎治、隅田伊織、“放射線治療学（改訂7版）（井上俊彦、小川和彦、小泉雅彦編集）-放射線治療の基礎：放射線物理学”、南山堂、2023年12月15日発行

T. Nishio, “Stereotactic Body Radiation Therapy Second Edition (Y. Nagata (Editor)) – Chapter 3 Physics of SBRT,” Springer, 35-54, 2023.

大西洋、唐澤久美子、西尾禎治、石川仁、“がん・放射線治療法：改定第8版”、Gakken（秀潤社）、2023年10月3日発行

T. Shirai, T. Nishio, K. Sato (Editor), “Advances in Accelerators and Medical Physics,” Elsevier, 1-364, 2023.

唐澤久美子、西尾禎治、小澤修一編集“スイスイわかる放射線治療物理学”、学研メディカル秀潤社、2021年5月5日発行

特願2026-008068：治療支援システム、治療支援方法及び治療支援プログラム

I909068（台湾／2025年）治療支援システム、治療支援方法及び治療支援プログラムを記憶するコンピュータ可読媒体

特願2025-147496：検査装置、検査方法及び検査プログラム

特願2025-123326：評価装置、評価方法及び評価プログラム

18/837275（アメリカ／2024年）Treatment support system, treatment support method, and treatment support program

18/578283（アメリカ／2024年）Treatment support system, treatment support method, and treatment support program

特願2024-206276：線量予測システム、線量予測方法及び線量予測プログラム

P3P20220272DE（ドイツ／2023年）Treatment support system, treatment support method, and treatment support program

WO2023/157869（中国／2023年）Treatment support system, treatment support method, and treatment support program

112105005（台湾／2023年）Treatment support system, treatment support method, and treatment support program

111125963（台湾／2022年）Treatment support system, treatment support method, and treatment support program

特許第7345768号：予測支援システム、予測支援方法及び予測支援プログラム

特許第7323141号：線量予測システム、線量予測方法及び線量予測プログラム

特許第7315935号：予測支援システム、予測支援方法及び予測支援プログラム

特許第7236115号：治療支援システム、治療支援方法及び治療支援プログラム

西尾禎治、“日本における医学物理士の人材育成と課題について”、内閣府原子力委員会定例会、2025年12月24日

西尾禎治、“「患者体内線量の観える化」による革新的陽子線がん治療法の研究”、生産と技術、第76巻第3号、86-92頁、2024年

西尾禎治、“医療分野での利用〜高度な放射線治療を支える医学物理士〜”、内閣府原子力委員会 原子力白書（令和2年度版）、211頁、2021年

西尾禎治、“医学物理士の役割・人材育成・今後”、内閣府原子力委員会定例会、2021年3月23日