Faculty of Radiological Technology

梶原 孝彦

kajihara takahiko

基本情報

所属
藤田医科大学 医療科学部 放射線学科 診療放射線技術学Ⅳ 講師

J-GLOBAL ID
200901075960919546
researchmap会員ID
1000102719

MISC

 1
  • Atsushi Teramoto, Takahiko Kajihara, Shoichi Suzuki, Kazuo Kinoshita, Masatoshi Tsuzaka, Hiroshi Fujita
    Radiological Physics and Technology 4(2) 164-172 2011年7月  
    The characteristics of flat-panel detectors (FPD) are degraded by exposure to radiation. Degradation in a FPD progresses locally and has a nonlinear relationship to the radiation dose. In order to manage FPD systems properly, one must perform quality control (QC) such as evaluation of image degradation. However, no evaluation method for degradation has been established. In this paper, we first review the structure and degradation mechanism of FPDs, and then we propose a daily QC system for FPDs. To evaluate the degradation of FPDs, we investigated the number of defective pixels and lines, as well as the offset level of the pixel output. Furthermore, we developed daily QC software for FPD that can evaluate the image quality and is operationally simple. In the experiments, an indirect-conversion type FPD was evaluated by our proposed system. The offset level of FPD increased exponentially with X-ray exposure no trends were seen for the number of defective pixels and defective lines. The required time for the evaluation of an FPD was about 1 min, and no special skills were needed for the analysis. These results indicate that our system may be useful for daily QC of FPDs. © 2011 Japanese Society of Radiological Technology and Japan Society of Medical Physics.

書籍等出版物

 2

講演・口頭発表等

 6

教育内容・方法の工夫(授業評価等を含む)

 1
  • 件名
    担当科目・実験
    開始年月日
    2009/04
    概要
    電気工学、応用電子工学Ⅱ、電気工学実験、応用電子工学実験、卒業研究

作成した教科書、教材、参考書

 1
  • 件名
    実験テキスト作成、特論講義資料
    開始年月日
    2009/04
    概要
    電気工学実験テキスト、応用電子工学実験テキスト、卒業研究資料

その他教育活動上特記すべき事項

 1
  • 件名
    教務委員、防災委員、アセンブリ活動
    開始年月日
    2009/04
    概要
    教務委員(時間割作成等)、アセンブリ卓球班班長、防災委員