Search Results - "Otsuka, Masakazu"

Feasibility study of a photochromic diarylethene film as a clinical dosimeter for kV X-rays by Tamura, Mikoto, Monzen, Hajime, Matsumoto, Kenji, Otsuka, Masakazu, Nishimura, Yasumasa

“…Radiochromic film (RCF) is commonly used as a measurement tool in radiation therapy and diagnostic X-ray imaging. However, the results are not immediately…”
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Plan complexity quantification of dual-layer multi-leaf collimator for volumetric modulated arc therapy with Halcyon linac by Tamura Mikoto, Matsumoto, Kenji, Otsuka Masakazu, Monzen Hajime

“…This study characterized the plan complexity of the dual-layer multi-leaf collimator (MLC) performance for volumetric modulated arc therapy (VMAT) in Halcyon…”
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Correction: Evaluation of lung toxicity risk with computed tomography ventilation image for thoracic cancer patients by Otsuka, Masakazu, Monzen, Hajime, Matsumoto, Kenji, Tamura, Mikoto, Inada, Masahiro, Kadoya, Noriyuki, Nishimura, Yasumasa

“…[This corrects the article DOI: 10.1371/journal.pone.0204721.]…”
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Evaluation of lung toxicity risk with computed tomography ventilation image for thoracic cancer patients by Otsuka, Masakazu, Monzen, Hajime, Matsumoto, Kenji, Tamura, Mikoto, Inada, Masahiro, Kadoya, Noriyuki, Nishimura, Yasumasa

“…Four-dimensional computed tomography (4D-CT) ventilation is an emerging imaging modality. Functional avoidance of regions according to 4D-CT ventilation may…”
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Feasibility study of volumetric modulated arc therapy with Halcyon™ linac for total body irradiation by Uehara, Takuya, Monzen, Hajime, Tamura, Mikoto, Inada, Masahiro, Otsuka, Masakazu, Doi, Hiroshi, Matsumoto, Kenji, Nishimura, Yasumasa

“…The use of total body irradiation (TBI) with linac-based volumetric modulated arc therapy (VMAT) has been steadily increasing. Helical tomotherapy has been…”
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Mechanical performance of a commercial knowledge-based VMAT planning for prostate cancer by Tamura, Mikoto, Monzen, Hajime, Matsumoto, Kenji, Kubo, Kazuki, Otsuka, Masakazu, Inada, Masahiro, Doi, Hiroshi, Ishikawa, Kazuki, Nakamatsu, Kiyoshi, Sumida, Iori, Mizuno, Hirokazu, Yoon, Do-Kun, Nishimura, Yasumasa

“…This study clarified the mechanical performance of volumetric modulated arc therapy (VMAT) plans for prostate cancer generated with a commercial…”
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Volumetric Modulated Arc Therapy Planning for Craniospinal Irradiation With a New O-ring Linac by Matsumoto, Kenji, Monzen, Hajime, Kubo, Kazuki, Otsuka, Masakazu, Nambu, Hidekazu, Nishimura, Yasumasa

“…This study aims to determine the feasibility of using a new O-ring linear accelerator (Halcyon, Varian Medical Systems, CA, USA) to perform treatment planning…”
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Variations of the Dose Distribution Between CT- and CBCT-based Plans for Oropharyngeal Cancer by Otsuka, Masakazu, Monzen, Hajime, Ishikawa, Kazuki, Doi, Hiroshi, Matsumoto, Kenji, Tamura, Mikoto, Nishimura, Yasumasa

“…The parotid glands in the head and neck are organs at risks (OARs) adjacent to high dose region and dose of OARs might be increased during the course of…”
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Dosimetric evaluation of simplified knowledge-based plan with an extensive stepping validation approach in volumetric-modulated arc therapy-stereotactic body radiotherapy for lung cancer by Wada, Yutaro, Monzen, Hajime, Tamura, Mikoto, Otsuka, Masakazu, Inada, Masahiro, Ishikawa, Kazuki, Doi, Hiroshi, Nakamatsu, Kiyoshi, Nishimura, Yasumasa

“…Purpose: We investigated the performance of the simplified knowledge-based plans (KBPs) in stereotactic body radiotherapy (SBRT) with volumetric-modulated arc…”
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Simplified sigmoidal curve fitting for a 6 MV FFF photon beam of the Halcyon to determine the field size for beam commissioning and quality assurance by Choi, Min-Geon, Law, Martin, Yoon, Do-Kun, Tamura, Mikoto, Matsumoto, Kenji, Otsuka, Masakazu, Kim, Moo-Sub, Djeng, Shih-Kien, Monzen, Hajime, Suh, Tae Suk

“…Abstract Background An O-ring gantry-type linear accelerator (LINAC) with a 6-MV flattening filter-free (FFF) photon beam, Halcyon, includes a reference beam…”
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Knowledge-based planning using pseudo-structures for volumetric modulated arc therapy (VMAT) of postoperative uterine cervical cancer: a multi-institutional study by Kamima, Tatsuya, Ueda, Yoshihiro, Fukunaga, Jun-Ichi, Tamura, Mikoto, Shimizu, Yumiko, Muraki, Yuta, Yoshioka, Yasuo, Kitamura, Nozomi, Nitta, Yuya, Otsuka, Masakazu, Monzen, Hajime

“…The aim of this study was to investigate the performance of the RapidPlan (RP ) using models registered pseudostructures, and to determine how many structures…”
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Dynamic sequence respiratory gated perfusion pulmonary SPECT without external tracking device by Sakaguchi, Kenta, Hosono, Makoto, Otsuka, Masakazu, Hanaoka, Kohei, Usami, Kimio, Uto, Tatsuro, Ishii, Kazunari

“…Objective The purpose of this study was to develop and evaluate a new method for respiratory gated pulmonary perfusion SPECT (RGPS) based on dynamic…”
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Dosimetric Characteristics of a Real Time Shapeable Tungsten Containing Rubber with Electron Beams by Matsumoto, Kenji, Tamura, Mikoto, Otsuka, Masakazu, Wakabayashi, Kazuki, Kijima, Kenta, Monzen, Hajime

“…This study investigated the dosimetric characteristics of electron beams shaped with a real-time shapeable tungsten-containing rubber (STR) collimator…”
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Independent monitor unit verification for dynamic flattened beam plans on the Halcyon linac by Kubo, Kazuki, Tamura, Mikoto, Matsumoto, Kenji, Otsuka, Masakazu, Monzen, Hajime

“…Independent monitor unit verification (MUV) methods for the dynamic beam‐flattening (DBF) technique have not been established. The purpose of this study was to…”
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New strategy of a lung compensating technique with STR for total body irradiation by Yanagi, Yuya, Monzen, Hajime, Tamura, Mikoto, Otsuka, Masakazu, Nishimura, Yasumasa

“…Purpose To determine the thickness of a soft variable shape tungsten rubber (STR) as a lung compensating filter in total body irradiation. Methods A tough…”
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An improvement process of knowledge-based plan (KBP) model to standardize VMAT plan quality for prostate cancer by Nakamura, Kenji, Okuhata, Katsuya, Otsuka, Masakazu, Tamura, Mikoto, Monzen, Hajime

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Introduction of Medical Physics Course in Kindai University-Department of Medical Physics, Graduate School of Medical Sciences, Kindai University by Tamura, Mikoto, Monzen, Hajime, Matsumoto, Kenji, Otsuka, Masakazu, Hanaoka, Kohei, Asai, Yoshiyuki

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Plan Complexity and Delivery Accuracy of Knowledge-based Volumetric Modulated Arc Therapy Plans with Single Optimization for Oropharyngeal Cancer by Okuhata, Katsuya, Monzen, Hajime, Tamura, Mikoto, Matsumoto, Kenji, Otsuka, Masakazu, Kubo, Kazuki, Ueda, Yoshihiro, Uehara, Takuya, Doi, Hiroshi, Ishikawa, Kazuki, Nishimura, Yasumasa

“…Background/Aim: We investigated the plan complexity of volumetric modulated arc therapy (VMAT) with knowledge-based plan (KBP) for oropharyngeal cancer (OPC)…”
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Hemodynamic Characteristics After Fontan Procedure in Patients with Down’s Syndrome by Otsuka, Masakazu, Kodama, Yoshihiko, Kuraoka, Ayako, Ishikawa, Yuichi, Nakamura, Makoto, Nakano, Toshihide, Kado, Hideaki, Umemoto, Shintaro, Ishikita, Ayako, Sakamoto, Ichiro, Ide, Tomomi, Tsutsui, Hiroyuki, Sagawa, Koichi

“…Patients with Down’s syndrome (DS) are generally regarded as not being good candidates for the Fontan procedure. However, detailed hemodynamic changes over…”
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Difference in VMAT dose distribution for prostate cancer with/without rectal gas removal and/or adaptive replanning by Wada, Yutaro, Monzen, Hajime, Otsuka, Masakazu, Doi, Hiroshi, Nakamatsu, Kiyoshi, Nishimura, Yasumasa

“…We investigated differences in the volumetric-modulated arc therapy (VMAT) dose distribution in prostate cancer patients treated by rectal gas removal and/or…”
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