发明授权
US4266135A Method of determining collimator aperture efficiency and apparatus with
an efficient collimator aperture size
失效
确定准直器孔径效率的方法和具有高效准直器孔径尺寸的装置
- 专利标题： Method of determining collimator aperture efficiency and apparatus with an efficient collimator aperture size
- 专利标题（中）： 确定准直器孔径效率的方法和具有高效准直器孔径尺寸的装置
-
申请号： US973570申请日： 1978-12-27
-
公开(公告)号： US4266135A公开(公告)日： 1981-05-05
- 发明人: John J. Kuwik , Arthur B. Braden , Samuel K. Taylor , John Covic
- 申请人： John J. Kuwik , Arthur B. Braden , Samuel K. Taylor , John Covic
- 申请人地址： OH Solon
- 专利权人： Ohio Nuclear, Inc.
- 当前专利权人： Ohio Nuclear, Inc.
- 当前专利权人地址： OH Solon
- 主分类号： A61B6/03
- IPC分类号： A61B6/03 ; A61B6/06 ; G21K5/10 ; A61B ; G01N23/08
摘要：
The method of determining collimator aperture efficiency for a computerized tomographic scanner having a plurality of radiation detectors positioned along a detector arc, a source of radiation having a focal spot having radiation flux distribution positioned across a scan circle from at least part of the detector arc, and a collimator having a plurality of apertures arranged in a collimator arc around said source.Also disclosed is a tomographic scanner having a circular detector arc, a radiation source moveable along a circular arc and an arcuate collimator having apertures in which the width of the collimator aperture in the geometry of the system has high efficiency. The ratio of the detector radius to the source radius, to the collimator radius, to the aperture width is 36:24.3;9.4:0.024.
公开/授权文献
- US5294684A Process for producing vinyl chloride resin 公开/授权日：1994-03-15
信息查询
