75.PET系統所偵測到的訊號之random coincidence rate的定義為何?(假設每一支detector的偵測效率皆相同,
Rs: single channel noncoincidence rate, Rt: random coincidence count rate, ∆T: coincidence timingwindow)
(A)Rt=∆T×Rs
(B)Rt=∆T×Rs×Rs
(C)Rs=∆T×Rt
(D)Rs=∆T×Rt×Rt
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統計: A(231), B(1445), C(174), D(237), E(0) #1634181
統計: A(231), B(1445), C(174), D(237), E(0) #1634181