发明授权
US5528649A Method of calibrating a radiological system and of measuring the equivalent thickness of an object 失效
校准放射学系统和测量物体的等效厚度的方法

  • 专利标题: Method of calibrating a radiological system and of measuring the equivalent thickness of an object
  • 专利标题(中): 校准放射学系统和测量物体的等效厚度的方法
  • 申请号: US979471
    申请日: 1992-11-20
  • 公开(公告)号: US5528649A
    公开(公告)日: 1996-06-18
  • 发明人: Robert Heidsieck
  • 申请人: Robert Heidsieck
  • 申请人地址: FRX Issy les Molineaux
  • 专利权人: General Electric CGR SA
  • 当前专利权人: General Electric CGR SA
  • 当前专利权人地址: FRX Issy les Molineaux
  • 优先权: FRX8907686 19890609
  • 主分类号: A61B6/00
  • IPC分类号: A61B6/00 G01N23/08 G01N23/06
Method of calibrating a radiological system and of measuring the
equivalent thickness of an object
摘要:
The calibration method consists in measuring the efficiency D of a detector cell placed behind the object as a function of various phantom thicknesses E.sub.p and various X-ray tube supply voltages V.sub.m. These measurements enable an analytic model D=f(V.sub.m, E.sub.p) to be determined describing the resulting curves. The inverse function of this analytic model can be used for calculating thickness E.sub.p as a function of the measured efficiency D and the known supply voltage V.sub.m.
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