发明名称 |
SPECT ARTIFACT CORRECTION FOR COMPENSATING ATTENUATION COEFFICIENT VARIATIONS THROUGH RECONSTRUCTION OF A SCATTER IMAGE. |
摘要 |
<p>An energy window of a scintillation camera system is set to include only events which have been Compton-scattered within a slice of the body of a patient undergoing a SPECT examination. From events so acquired, a scatter image is reconstructed. The scatter image is processed to define therewithin a plurality of regions of constant attenuation coefficient. This information can be used during the normal image reconstruction process to eliminate artifacts caused by variation in attenuation coefficient.</p> |
申请公布号 |
EP0648341(A1) |
申请公布日期 |
1995.04.19 |
申请号 |
EP19930910948 |
申请日期 |
1993.04.30 |
申请人 |
SIEMENS MEDICAL SYSTEMS, INC. |
发明人 |
HAWMAN, ERIC, G. |
分类号 |
G01T1/161;G01T1/164;G01T1/29;(IPC1-7):G01T1/29 |
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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