发明名称 |
Image reconstruction for compton camera including spherical harmonics |
摘要 |
A diagnostic imaging system includes a Compton camera (14) disposed on a gantry (16). The camera (14) includes linear detectors (30a, 30b) for detecting radiation emanating from a subject to be imaged. A data processor (32) collects and processes radiation data in accordance with the detected radiation. Position and energy resolving circuitry (34) determines positions and energy deposited by photons striking the detectors. A cone projection generator (40) generates cone projection data or cone integrals based on the collected data which determine a possible location of a gamma source of the detected radiation. A conversion processor (41) converts the cone projection data into plane projection data. The conversion processor (41) includes a line integral processor (42) which determines line integrals representing the cone projection data and applies a spherical harmonic expansion to the line integrals. A plane integral generator (43) generates plane integrals such as Radon projection planes based on the line integrals. A reconstruction processor (44) reconstructs an image representation of a region of interest from the subject from the plane projection data using filtered back projection.
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申请公布号 |
US5861627(A) |
申请公布日期 |
1999.01.19 |
申请号 |
US19970881752 |
申请日期 |
1997.06.24 |
申请人 |
THE UNIVERSITY OF UTAH |
发明人 |
BASKO, ROMAN;ZENG, GENGSHENG LAWRENCE;GULLBERG, GRANT T. |
分类号 |
G01T1/164;G01T1/24;(IPC1-7):G01T1/17 |
主分类号 |
G01T1/164 |
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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