发明名称 |
Method and device for determining an energy-independent X-ray attenuation factor in a region of an object |
摘要 |
A method and apparatus for measurement of an energy-independent attenuation factor in a predetermined area of a primary X-ray beam which passes through a test object. Two detectors measure scattered radiation on closely adjacent paths in each of two different spectral ranges. The attenuation factor is calculated from the difference of the logarithms of quotients of measurements taken at different engergies.
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申请公布号 |
US4785401(A) |
申请公布日期 |
1988.11.15 |
申请号 |
US19860909807 |
申请日期 |
1986.09.22 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
HARDING, GEOFFREY;KOSANETZKY, JOSEF-MARIA |
分类号 |
G01N23/203;G01N23/06;(IPC1-7):G01N23/201 |
主分类号 |
G01N23/203 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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