放射線撮像装置およびゲインキャリブレーション方法
- 专利权人:
- 株式会社島津製作所
- 发明人:
- 後藤 敬一
- 申请号：
- JP2009039407
- 公开号：
- JP5347554B2
- 申请日:
- 2009.02.23
- 申请国别(地区):
- JP
- 年份:
- 2013
- 代理人:
- 摘要：
PROBLEM TO BE SOLVED: To provide a radiation imaging apparatus and a gain calibration method for performing calibration without erasing a target image even when a target for positioning is left disposed.
SOLUTION: The radiation imaging apparatus includes: extraction means 71 for extracting a target image by applying a Median Filter to a uniform irradiation image obtained by irradiating a flat panel detector 2 with radiation and subtracting the uniform irradiation image from the image changing means 75 for changing a pixel value of the target image extracted by the extracting means into an average value of an area excluding the target image in the uniform irradiation image or a pixel value of an image in an area adjacent to the target of the uniform irradiation image and map creating means 76 for creating a gain property map of the flat panel detector 2 where the pixel value of the target image is changed by the changing means 75.
COPYRIGHT: (C)2010,JPO&INPIT
- 来源网站：
- 中国工程科技知识中心
