发明名称 |
Variable code gamma ray imaging system |
摘要 |
A gamma-ray source distribution in the body is imaged onto a detector using an array of apertures. The transmission of each aperture is modulated using a code such that the individual views of the source through each aperture can be decoded and separated. The codes are chosen to maximize the signal to noise ratio for each source distribution. These codes determine the photon collection efficiency of the aperture array. Planar arrays are used for volumetric reconstructions and circular arrays for cross-sectional reconstructions.
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申请公布号 |
US4165462(A) |
申请公布日期 |
1979.08.21 |
申请号 |
US19770794117 |
申请日期 |
1977.05.05 |
申请人 |
MACOVSKI, ALBERT;ROSENFELD, DOV |
发明人 |
MACOVSKI, ALBERT;ROSENFELD, DOV |
分类号 |
G01T1/29;(IPC1-7):G01T1/20;G01N21/34 |
主分类号 |
G01T1/29 |
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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