发明名称 |
GAMMA CAMERA WITH DYNAMIC THRESHOLD |
摘要 |
<p>A method of locating an event with a gamma camera ( 12 ) of an emission computed tomography (ECT) scanner ( 10 ) is provided. The gamma camera ( 12 ) includes a matrix of sensors ( 22 ) situated to view the event. The sensors ( 22 ) have respective outputs that are responsive to the event. The method includes: identifying a first sensor in the matrix that has in response to the event a highest output relative to the other sensors in the matrix (step (B 2 )); identifying a number of second sensors in the matrix that are closest neighbors to the first sensor (step (B 3 )); combining into a total output a number of outputs from the identified sensors, the number of outputs being at least one (1) and less than the number of all the identified sensors (step (B 4 )); and, determining a threshold value which is a percentage of the total output (step (B 4 )).</p> |
申请公布号 |
AU2003278513(A1) |
申请公布日期 |
2004.06.18 |
申请号 |
AU20030278513 |
申请日期 |
2003.11.12 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
THOMAS, L. LAURENCE;STEVEN, E. COOKE |
分类号 |
G01T1/164;(IPC1-7):G01T1/164 |
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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