发明名称 |
Method and circuit for correcting count rate losses of radiation events |
摘要 |
Radiation events of a radiation detector which are subject to deadtime losses during the acquisition time are detected as event triggers. For each detected radiation event a deadtime signal is provided. The acquisition time is subdivided into a succession of evaluation time intervals and the fractional amount of deadtime is measured within each evaluation time interval to obtain a measure for count rate losses. From the fractional amount of deadtime a replication probability is evaluated and dependent thereon all radiation events detected between the end of one evaluation time and the end of a following one are evaluated to generate (a) one pulse for each detected radiation event; and (b) a sequence of a number of pulses for randomly selected events.
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申请公布号 |
US4599690(A) |
申请公布日期 |
1986.07.08 |
申请号 |
US19830549866 |
申请日期 |
1983.11.09 |
申请人 |
SIEMENS GAMMASONICS, INC. |
发明人 |
STOUB, EVERETT W. |
分类号 |
G01T1/164;G01T1/17;(IPC1-7):G01T1/20 |
主分类号 |
G01T1/164 |
代理机构 |
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地址 |
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