Radiotherapy for prostate cancer is associated with an increased incidence of secondary
bladder cancer (BC). We investigated the incidence, clinicopathological characteristics, and …

We have proposed a computer-assisted framework for machine-learning–based delineation
of gross tumor volumes (GTVs) following an optimum contour selection (OCS) method. The …

Objective Although it is well known that radiotherapy for prostate cancer increases comorbid
rate of secondary bladder cancer, the effect of aging and smoking with radiotherapy on …

We investigated the feasibility of patient dose reduction based on six noise suppression
filters for cone-beam computed tomography (CBCT) in an image-guided patient positioning …

A computerized framework for monitoring four-dimensional (4D) dose distributions during
stereotactic body radiation therapy based on a portal dose image (PDI)-based 2D/3D …

Objective: To investigate the quantitative evaluation of the robustness of particle beam
directions against patient setup errors in charged particle therapy. Methods: Power spectral …

Accurate patient positioning is one of the major requirements of delivering precise radiation
therapy. The objective of this research is to verify the localisation of the dose delivered. In …

臨床医学において電磁波を用いたのは放射線が初めてではない. 広い意味での電磁波は可視光線
や紫外線, 赤外線も含まれる. 視診は可視光線の反射光を用いた診察法であるが …

抄録 国立大学法人弘前大学医学部附属病院の On-Board Imager による画像誘導放射線治療を
行った症例 61 例を対象として, 照射部位及び上肢固定具毎におけるセットアップエラーを分析し …

本研究の目的は, 放射線照射時のビーム方向像である EPID (electronic portal imaging device)
の動画像に基づき, 患者体内での四次元線量分布を推定する手法を開発することである. 第一に …