Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Ryuta Nakahara"'
Autor:
MASAYOSHI MIYAZAKI, SHINGO OHIRA, YOSHIHIRO UEDA, MASARU ISONO, MASAYUKI FUJIWARA, MASAO TANOOKA, WATARU OKADA, RYUTA NAKAHARA, MASAKI SUEOKA, HITOMI SUZUKI, TERUKI TESHIMA, KOICHIRO YAMAKADO
Publikováno v:
In Vivo. 34:331-337
Autor:
Shogo Matsuda, Kentaro Ishii, Shun Kishimoto, Kazuki Kubo, Masayuki Kusawake, Toshifumi Nakajima, Yuta Nakasaka, Ryu Kawamorita, Mikoto Tamura, Ryuta Nakahara, Hajime Monzen
Publikováno v:
Physica Medica. 67:132-140
This study aimed to clarify the inter-planner variation of plan quality in knowledge-based plans created by nine planners.Five hypofractionated prostate-only (HPO) volumetric modulated arc therapy (VMAT) plans and five whole-pelvis (WP) VMAT plans we
Autor:
Hiroshi Doi, Taisuke Inomata, Keisuke Sano, Ryuta Nakahara, Masao Tanooka, Hitomi Suzuki, Masaki Sueoka, Masayoshi Miyazaki, Koichiro Yamakado, Masayuki Fujiwara, Mayuri Shibata, Wataru Okada
Publikováno v:
Journal of Applied Clinical Medical Physics
We sought to validate new couch modeling optimization for tomotherapy planning and delivery. We constructed simplified virtual structures just above a default setting couch through a planning support system (MIM Maestro, version 8.2, MIM Software Inc
Autor:
Takuhito Tada, Chiaki Shimada, R. Ogino, Shun Kishimoto, Ryuta Nakahara, Kentaro Ishii, Yoshiki Hayashi, Toshifumi Nakajima, Toshiko Yamanaga, Yukinari Hosokawa, Ryu Kawamorita
Publikováno v:
Practical Radiation Oncology. 8:e49-e55
Purpose This study aimed to compare bowel and urinary health-related quality of life (HRQOL) between prostate-only (PO) volumetric modulated arc therapy (VMAT) and whole-pelvis (WP) VMAT in patients with localized prostate cancer. Methods and materia
Autor:
RYUTA NAKAHARA, MASAYUKI FUJIWARA, HARUYUKI TAKAKI, MASAO TANOOKA, KENTARO ISHII, RYU KAWAMORITA, KOICHIRO YAMAKADO
Publikováno v:
In Vivo; Jul/Aug2022, Vol. 36 Issue 4, p1887-1895, 9p
Autor:
Wataru Okada, Ryuta Nakahara, Masatoshi Hasegawa, Kentaro Ishii, Nobuhide Wakai, Toshifumi Nakajima, Kazuki Kubo, Shun Kishimoto, Ryu Kawamorita
Publikováno v:
International Journal of Medical Physics, Clinical Engineering and Radiation Oncology. :47-60
Adequate matching methods are critical for accurate volumetric-modulated arc therapy (VMAT). We investigated the dosimetric differences in the target and organs at risk (OARs) between bone matching and target matching in patients with prostate cancer
Autor:
Ryuta Nakahara, Kazuki Kubo, R. Ogino, Wataru Okada, Shun Kishimoto, Toshifumi Nakajima, Takuhito Tada, Yoshie Ishii, Kentaro Ishii, Ryu Kawamorita
Publikováno v:
Journal of Radiation Research
The purpose of this study was to determine appropriate beam arrangement for volumetric-modulated arc therapy (VMAT)-based stereotactic body radiation therapy (SBRT) in the treatment of patients with centrally located lung tumors. Fifteen consecutive
Autor:
Yasumasa Nishimura, Mikoto Tamura, Hajime Monzen, Kazuki Kubo, Shun Kishimoto, Makoto Hirata, Wataru Okada, Ryu Kawamorita, Kentaro Ishii, Ryuta Nakahara
Publikováno v:
Journal of Applied Clinical Medical Physics
It is important to improve the magnitude of dose variation that is caused by the interplay effect. The aim of this study was to investigate the impact of the number of breaths (NBs) to the dose variation for VMAT‐SBRT to lung cancer. Data on respir
Autor:
MASAYOSHI MIYAZAKI, SHINGO OHIRA, YOSHIHIRO UEDA, MASARU ISONO, MASAYUKI FUJIWARA, MASAO TANOOKA, WATARU OKADA, RYUTA NAKAHARA, MASAKI SUEOKA, HITOMI SUZUKI, TERUKI TESHIMA, KOICHIRO YAMAKADO
Publikováno v:
In Vivo; Jan/Feb2020, Vol. 34 Issue 1, p331-337, 7p
Autor:
Wataru Okada, Ryu Kawamorita, Kentaro Ishii, Shun Kishimoto, Toshifumi Nakajima, Yasumasa Nishimura, Hajime Monzen, Ryuta Nakahara
Publikováno v:
OMICS Journal of Radiology.
Objective: The purpose of this study was to determine the PTV margins from the cumulative frequency of uncertainties of the clinical target volume (CTV) position obtained using hybrid-image guided radiotherapy (H-IGRT) with volumetric-modulated arc t