发明名称 |
GAMMA CAMERA WITH ROTATING DETECTORS FOR VARIABLE ANGULAR SAMPLING RATE |
摘要 |
<p>A subject (10) is disposed adjacent a linear detector array (18) of a nuclear camera. The subject (10) is injected with a radioactive isotope (14) and y-ray emissions indicative of nuclear decay are detected at the detector array (18) as the detector array rotates about an axis of rotation to collect data over a circular field of view. Detectors farther from the axis rotation are sampled at a higher sampling rate such that the are sampled after a generally constant arc of rotation to correct for angular aliasing. The detector array (18) rotates about the axis of rotation in a 1/sin THETA pattern with angular offset of the detector array from a longitudinal axis of the subject. This corrects for otherwise uneven sampling. A reconstruction processor (84) reconstructs the identifications of the y-ray receiving detectors, or other indicators of event detection location, and the digital peak values to generate a spherical image representation.</p> |
申请公布号 |
EP1381886(A1) |
申请公布日期 |
2004.01.21 |
申请号 |
EP20020753617 |
申请日期 |
2002.03.14 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;PHILIPS MEDICAL SYSTEMS (CLEVELAND), INC. |
发明人 |
GAGNON, DANIEL;ZENG, GENSHENG, L. |
分类号 |
G01T1/161;G01T1/164;G01T1/24;(IPC1-7):G01T1/164 |
主分类号 |
G01T1/161 |
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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