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Article
Clinical course of longer than five years after definitive radiotherapy for nasopharyngeal carcinoma
This study aimed to reveal the long-term outcomes and late toxicities (> 5 years) after definitive intensity-modulated radiation therapy (IMRT) in patients with nasopharyngeal carcinoma (NPC).
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Article
External beam radiotherapy combination is a risk factor for bladder cancer in patients with prostate cancer treated with brachytherapy
To investigate the risk of bladder cancer (BCa) in patients treated with brachytherapy for prostate cancer (PCa).
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Article
Difference in failure patterns after stereotactic body radiotherapy for lung cancer according to clinical T stage based on 4D computed tomography
Stereotactic body radiotherapy (SBRT) is a treatment option for early-stage lung cancer. We aimed to examine the differences in failure patterns after SBRT according to the clinical T stage.
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Article
Open AccessMulti-institution model (big model) versus single-institution model of knowledge-based volumetric modulated arc therapy (VMAT) planning for prostate cancer
We established a multi-institution model (big model) of knowledge-based treatment planning with over 500 treatment plans from five institutions in volumetric modulated arc therapy (VMAT) for prostate cancer. T...
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Article
Multi-institutional feasibility study of intensity-modulated radiotherapy with chemotherapy for locally advanced non-small cell lung cancer
This multi-institutional clinical trial evaluated the feasibility of intensity-modulated radiotherapy (IMRT) for patients with locally advanced non-small cell lung cancer (NSCLC).
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Article
Open AccessRisk factors for radiation pneumonitis after rotating gantry intensity-modulated radiation therapy for lung cancer
The risk factors for severe radiation pneumonitis (RP) in patients with lung cancer who undergo rotating gantry intensity-modulated radiation therapy (IMRT) using volumetric modulated arc therapy (VMAT) or hel...
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Article
Outcome of chemoradiotherapy using intensity-modulated radiation therapy for cervical esophageal cancer: a single institute experience
The role of intensity-modulated radiation therapy in the treatment of cervical esophageal cancer remains unclear. The outcome of concurrent chemoradiotherapy for cervical esophageal squamous cell carcinoma usi...
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Article
Dosimetric evaluation with knowledge-based planning created at different periods in volumetric-modulated arc therapy for prostate cancer: a multi-institution study
Dosimetric evaluation and variation assessment were performed with two knowledge-based planning (KBP) models created at different periods for volumetric-modulated arc therapy (VMAT) for prostate cancer at five...
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Article
Comparing the 7th and 8th editions of the American Joint Committee on Cancer/Union for International Cancer Control TNM staging system for esophageal squamous cell carcinoma treated by definitive radiotherapy
We retrospectively compared the 7th and the 8th editions of The American Joint Committee on Cancer/Union for International Cancer Control (AJCC/UICC) TNM classification in the cohort of survival of the patient...
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Article
Stereotactic body radiotherapy in patients with chronic obstructive pulmonary disease and interstitial pneumonia: a review
Stereotactic body radiation therapy (SBRT) can yield excellent local tumor control, as well as survival benefit comparable to that of surgery for early-stage lung cancer. However, in terms of toxicity, SBRT mi...
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Article
Definitive chemoradiotherapy for anal canal cancer: single-center experience
Chemoradiotherapy (CRT) is a standard treatment for anal canal cancer although many patients with anal canal cancer undergo surgery in Japan. The efficacy of CRT for anal canal cancer was evaluated retrospecti...
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Article
Open AccessMechanical performance of a commercial knowledge-based VMAT planning for prostate cancer
This study clarified the mechanical performance of volumetric modulated arc therapy (VMAT) plans for prostate cancer generated with a commercial knowledge-based treatment planning (KBP) and whether KBP system ...
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Article
Open AccessEvaluation of multiple institutions’ models for knowledge-based planning of volumetric modulated arc therapy (VMAT) for prostate cancer
The aim of this study was to evaluate the performance of a commercial knowledge-based planning system, in volumetric modulated arc therapy for prostate cancer at multiple radiation therapy departments.
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Article
Clinical outcomes of IMRT planned with or without PET/CT simulation for patients with pharyngeal cancers
Clinical results of computed tomography (CT) simulations and [18F]-fluoro-2-deoxyglucose (FDG) positron emission tomography (PET)/CT simulations were compared retrospectively.
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Article
Clinical results of definitive-dose (50 Gy/25 fractions) preoperative chemoradiotherapy for unresectable esophageal cancer
The clinical results of definitive-dose preoperative chemoradiotherapy (CRT) of 50 Gy/25 fractions/5 weeks for unresectable esophageal cancer were analyzed.
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Article
Efficacy of silodosin in patients undergoing brachytherapy: a randomized trial involving a pressure flow study
The purpose of the study is to investigate the efficacy of an alpha-1 adrenergic receptor antagonist (silodosin) for the treatment of lower urinary tract symptoms (LUTS) associated with interstitial 125I implanta...
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Article
Static and moving phantom studies for radiation treatment planning in a positron emission tomography and computed tomography (PET/CT) system
To determine an appropriate threshold value for delineation of the target in positron emission tomography (PET) and to investigate whether PET can delineate an internal target volume (ITV), a series of phantom...
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Article
Treatment outcomes and dose-volume histogram analysis of simultaneous integrated boost method for malignant gliomas using intensity-modulated radiotherapy
The aim of this article is to report the treatment outcomes, toxicities, and dosimetric feasibility of our simultaneous-boost intensity-modulated radiotherapy (SIB-IMRT) protocol.
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Article
Comparison of outcomes between overlap** structure-based and non-overlap** structure-based optimization for simultaneous integrated boost IMRT for malignant gliomas
Intensity-modulated radiotherapy (IMRT) can deliver different doses to two target volumes with high conformity. The purpose of the present study was to compare outcomes provided by two different optimization m...
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Article
Erythropoietin/Erythropoietin-receptor system as an angiogenic factor in chemically induced murine hepatic tumors
To clarify the role of erythropoietin (Epo) in hepatic tumor angiogenesis, expression of Epo and its receptor (Epo-R) and content of Epo were investigated in murine chemically induced hepatic tumors.
