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Detected Events in PET
Detection event is valid (=
prompt
event) if
●
Two photons are detected in coincidence window
●
LOR is within valid acceptance angle
●
Energy of both photons within selected energy window
True coincidence
(A)
2
τ
≈10 ns
A
B
C
, scattered coincidence
(B)
, random coincidence
(C)
ESTRO Teaching Course Advanced Imaging: PET – Basic Principles
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