Abstract：
:The variance in the number of x-ray photons absorbed by a detector is derived from theoretical considerations. The distributions in the number of x-ray photons produced by the x-ray tube, transmitted through the patient, and absorbed by the detector are described. These distributions are compounded to yield a distribution in the number of x-ray photons absorbed by a detector. The standard deviation (quantum noise) in this distribution is very well approximated by the commonly used and experimentally verified quantity square root N where N is the average number of x-ray number of x-ray photons absorbed by the detector.
journal_name
Med Physjournal_title
Medical physicsauthors
Rimkus D,Baily NAdoi
10.1118/1.595393subject
Has Abstractpub_date
1983-07-01 00:00:00pages
470-1issue
4eissn
0094-2405issn
2473-4209journal_volume
10pub_type
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