放射線治療用線量分布測定装置、及び、放射線治療用線量分布測定装置における散乱線検出器の較正方法
- 专利权人:
- 株式会社東芝
- 发明人:
- 櫻井 康雄
- 申请号：
- JP2009056493
- 公开号：
- JP5319338B2
- 申请日:
- 2009.03.10
- 申请国别(地区):
- JP
- 年份:
- 2013
- 代理人:
- 摘要：
PROBLEM TO BE SOLVED: To calibrate the position and the detection sensitivity of a scattered radiation detector in a measuring apparatus for detecting scattered radiation during the radiotherapy.
SOLUTION: A marker plate including a plurality of scattering bodies for scattering a treatment beam is mounted on a bed 14, and the scattered radiation detector 21 detects scattered radiation from the scattering bodies generated based on the treatment beam. A position calculating part 41 calculates the position of the scattered radiation detector 21 based on the result of the detection and the image in the scattered radiation detector 21 obtained from the setting positions of the scattering bodies. An area calculating part 45 calculates the area within the marker plate with a possibility of the scattered radiation entering the scattered radiation detector 21 based on the position of the scattered radiation detector 21 and the setting positions of the scattering bodies. An attributed data calculating part 46 calculates the attributed data of the incident scattered radiation based on the calculated area and the positions and material of the scattering bodies. A correction coefficient calculating part 47 calculates a correction coefficient for correcting the detection sensitivity based on the actually measured value and the calculated attributed data.
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- 来源网站：
- 中国工程科技知识中心
