Mean and variance of single photon counting with deadtime
نویسندگان
چکیده
منابع مشابه
Mean and variance of single photon counting with deadtime.
The statistics of photon counting by systems affected by deadtime are potentially important for statistical image reconstruction methods. We present a new way of analysing the moments of the counting process for a counter system affected by various models of deadtime related to PET and SPECT imaging. We derive simple and exact expressions for the first and second moments of the number of record...
متن کاملMean and Variance of Photon Counting with Deadtime
The statistics of photon counting by systems affected by deadtime are potentially important for statistical image reconstruction methods. We present a new way of analyzing the moments of the counting process for a counter system affected by various models of deadtime related to PET and SPECT imaging. We derive simple and exact expressions for the first and second moments of the number of record...
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When photon-counting detectors are calibrated in the presence of a background signal, deadtime effects can be significant and must be carefully accounted for to achieve high accuracy. We present a method for separating the correlated signal from the background signal that appropriately handles deadtime effects. This method includes consideration of pulse timing and afterpulsing issues that aris...
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ژورنال
عنوان ژورنال: Physics in Medicine and Biology
سال: 2000
ISSN: 0031-9155,1361-6560
DOI: 10.1088/0031-9155/45/7/324