Journal of Radiation Research
Papers 6270
1 page of 627 pages (6,270 results)
#1Chia-Chuan Kuo (TMU: Taipei Medical University)
#2Chin-Chieh Chang (TMU: Taipei Medical University)
Last. Jo-Ting Tsai (TMU: Taipei Medical University)
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We investigated the organ-sparing effect of the deep inspiration breath hold (DIBH) technique among different levels of lung expansion for left-side breast radiotherapy. This retrospective study enrolled 30 patients who received adjuvant left breast radiotherapy after breast-conserving surgery (BCS). Simulation scans of both DIBH and deep breathing four-dimensional computed tomography (4DCT) were acquired, and three treatment plans were generated for each patient. One plan was based on the DIBH ...
#1H. Hanazawa (Kyoto University)
#2Yukinori Matsuo (Kyoto University)H-Index: 29
Last. Takashi Mizowaki (Kyoto University)H-Index: 32
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This study sought to develop and validate a prognostic model for non-lung cancer death (NLCD) in elderly patients with non-small cell lung cancer (NSCLC) treated with stereotactic body radiotherapy (SBRT). Patients aged ≥65 diagnosed with NSCLC (Tis-4N0M0), tumor diameter ≤5 cm and SBRT between 1998 and 2015 were retrospectively registered from two independent institutions. One institution was used for model development (arm D, 353 patients) and the other for validation (arm V, 401 patients). To...
#1Sira Jampa-Ngern (Hokkaido University)
#2Keiji Kobashi (Hokkaido University)H-Index: 7
Last. Hiroki Shirato (Hokkaido University)H-Index: 82
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The prediction of liver Dmean with 3-dimensional radiation treatment planning (3DRTP) is time consuming in the selection of proton beam therapy (PBT), and deep learning prediction generally requires large and tumor-specific databases. We developed a simple dose prediction tool (SDP) using deep learning and a novel contour-based data augmentation (CDA) approach and assessed its usability. We trained the SDP to predict the liver Dmean immediately. Five and two computed tomography (CT) data sets of...
#1Daichi Torizuka (Kyoto University)
#2Megumi Uto (Kyoto University)H-Index: 5
Last. Takashi Mizowaki (Kyoto University)H-Index: 32
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In the delivery of stereotactic radiosurgery (SRS) by linear accelerator (LINAC), dynamic conformal arc therapy (DCAT) with non-coplanar beams is conventionally used. However, volumetric modulated arc therapy (VMAT) can improve target conformity, thereby decreasing the dose to organs at risk by inversed planning methods, but few studies have directly compared DCAT and VMAT with and without non-coplanar beams in patients with single brain metastasis. We therefore conducted a planning study to com...
#1Yusuke Anetai (Kansai Medical University)H-Index: 1
#2Yuhei Koike (Kansai Medical University)H-Index: 2
Last. Noboru Tanigawa (Kansai Medical University)H-Index: 24
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Whole dose distribution results from well-conceived treatment plans including patient-specific (location, size and shape of tumor, etc.) and facility-specific (clinical policy and goal, equipment, etc.) information. To evaluate the whole dose distribution efficiently and effectively, we propose a method to apply spherical projection and real spherical harmonics (SH) expansion, thus leading to the expanded coefficients as a rank-2 tensor, SH coefficient tensor, for every patient-specific dose dis...
#1T. Yoshimura (Hokkaido University)H-Index: 3
#2Honoka Tamori (RMIT: RMIT University)
Last. Katsuhiko Ogasawara (Hokkaido University)H-Index: 11
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Compared to conventional X-ray therapy, proton beam therapy (PBT) has more clinical and physical advantages such as irradiation dose reduction to normal tissues for pediatric medulloblastoma. However, PBT is expensive. We aimed to compare the cost-effectiveness of PBT for pediatric medulloblastoma with that of conventional X-ray therapy, while focusing on radiation-induced secondary cancers, which are rare, serious and negatively affect a patient's quality of life (QOL). Based on a systematic re...
#1Yihua He (Southern Medical University)H-Index: 2
#2Yuqin Peng (Southern Medical University)H-Index: 1
Last. Suyue Pan (Southern Medical University)H-Index: 12
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Radiation-induced brain injury (RBI) is a common complication of radiotherapy for head and neck tumors while its mechanism is not fully understood. Animal whole-brain radiation (WBR) models are of key importance in experimental radiation research, and an appropriate radiation source is essential. Previous animal WBR models were administered by clinical linear accelerator to induce the pathophysiological changes of RBI. In the current study, we adopted Faxitron MultiRad 225 X-ray irradiation syst...
#1Masataka Tsuda (Hiroshima University)H-Index: 11
#2Naoto Shimizu (Hiroshima University)
Last. Hiroshi Ide (Hiroshima University)H-Index: 43
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Various types of DNA lesions are produced when cells are exposed to ionizing radiation (IR). The type and yield of IR-induced DNA damage is influenced by the oxygen concentration. Thus, different DNA repair mechanisms may be involved in the response of normoxic and hypoxic cells to irradiation with IR. However, differences between the repair mechanisms of IR-induced DNA damage under normoxic versus hypoxic conditions have not been clarified. Elucidating the relative contribution of individual re...
#1Hiroaki MatsubaraH-Index: 16
#2Takatomo EzuraH-Index: 1
Last. Masato TsunedaH-Index: 6
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Cardiac implantable electronic devices (CIEDs) were believed to have a tolerance dose and that direct irradiation has to be avoided. Thus, no clinical guidelines have mentioned the feasibility of total body irradiation (TBI) with a CIED directly. The purpose of this work was to study a feasible and safe condition for TBI using a CIED. Eighteen CIEDs were directly irradiated by a 6-MV X-ray beam, where a non-neutron producible beam was employed for the removal of any neutron contribution to CIED ...
#1Vladimir Drozdovitch (HHS: United States Department of Health and Human Services)H-Index: 26
#2Victor Minenko (BSU: Belarusian State University)H-Index: 16
Last. Norisato Mitsutake (Nagasaki University)H-Index: 30
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The Chernobyl accident on 26 April 1986 led to a sharp increase in thyroid cancer (TC) incidence in the individuals exposed to radiation in childhood. The major risk factor for TC was exposure to Iodine-131 (131I). Here, we estimated the thyroid doses due to 131I intake for 2041 participants of the genome-wide association study of TC in Belarusian people exposed to radioactive fallout from the Chernobyl accident. The following parameter-values specially developed in this study were used to estim...
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Molecular biology