Výsledky vyhledávání - "Yuuichi Aoyama"

Application of dual-energy CT to suppression of metal artefact caused by pedicle screw fixation in radiotherapy: a feasibility study using original phantom

Autor: Satoru Takahashi, Takeaki Ishihara, Toshiaki Minami, Ryuichi Yada, Tianyuan Wang, Naoki Yoshida, Kotaro Nishida, Ryohei Sasaki, Hiroaki Akasaka, Daisuke Miyawaki, Yasuo Ejima, Atsushi K. Kono, Kenichiro Kakutani, Yuuichi Aoyama, Noriyuki Negi, Kenji Yoshida, Naritoshi Mukumoto

Publikováno v: Physics in Medicine & Biology. 62:6226-6245

The objective of the present study was the determination of the potential dosimetric benefits of using metal-artefact-suppressed dual-energy computed tomography (DECT) images for cases involving pedicle screw implants in spinal sites. A heterogeneous

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f12844b61f8769c9fdb16c2576764211
https://doi.org/10.1088/1361-6560/aa7d7f

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An experimental attenuation plate to improve the dose distribution in intraoperative electron beam radiotherapy for breast cancer

Autor: Tsuneo Imai, M Sawaki, Yasunori Obata, Katsuyoshi Tabushi, Y Ito, T. Oshima, Tomohiro Shimozato, Yuuichi Aoyama

Publikováno v: Physics in medicine and biology. 54(11)

Intraoperative electron beam radiotherapy (IOERT) is a technique in which a single-fraction high dose is intraoperatively delivered to subclinical tumour cells using an electron beam after breast-conserving surgery. In IOERT, an attenuation plate con

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4bc6c370c1076f655eb8415fdd6735b
https://pubmed.ncbi.nlm.nih.gov/19436105

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[Dosimetry with phantom for total body irradiation(TBI)]

Autor: Noriyuki Sakakura, Akiyo Shimohira, Takako Tezuka, Yasunori Obata, Katuyoshi Tabushi, Satoru Kondou, Syuuji Koyama, Yuuichi Aoyama

Publikováno v: Nihon Hoshasen Gijutsu Gakkai zasshi. 58(4)

Total body irradiation(TBI) is being used as a method of preparation for bone marrow transplantation(BMT). In TBI, the dose calculation is based on dosimetry using a phantom. We measured the basic dose with a phantom using a 10 MV X-rays. We confirme

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b9413c963071a01cc894e3da73671c5
https://pubmed.ncbi.nlm.nih.gov/12469036

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A paired wedge filter system for compensation in dose differences

Autor: Yasuo Sakurai, Yasunori Obata, Sinji Abe, Yuuichi Aoyama, Satoru Kondo, Norikazu Hayakawa, Takeo Ishigaki, Hidetoshi Kobayashi

Publikováno v: Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology. 49(3)

Objective : In radiotherapy, it is important to conform the high dose volume to the planned target volume. A variable thickness paired wedge filter system was developed to compensate for dose inhomogeneity arising from field width segment variation i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47afd2cf6157f51af4156ab7223a9225
https://pubmed.ncbi.nlm.nih.gov/10075259

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Dosimetric Perturbation Due to Scattered Ray from a Gold Marker for Tumor Tracking In Radiotherapy Planning

Autor: K. Yasui, K. Ryota, T. Shimozato, Yasunori Obata, K. Habara, Yuuichi Aoyama, Naoki Hayashi

Publikováno v: International Journal of Radiation Oncology*Biology*Physics. 78:S824

K. Habara, T. Shimozato, Y. Obata, K. Ryota, K. Yasui, Y. Aoyama, N. Hayashi Hiroshima Red Cross Hospital and Atomic-bomb Survivors Hospital, Hiroshima, Japan, Nagoya University School of Health Science, Nagoya, Japan, Graduate School of Medicine, Na

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::16b8b253fe06d90e4b372ccae2ed725d
https://doi.org/10.1016/j.ijrobp.2010.07.1907

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