2017 Imaging for Physicists Coursebook
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
B
A
C
2 τ ≈10 ns
True coincidence (A)
, scattered coincidence (B) , random coincidence (C)
20
ESTRO Teaching Course Advanced Imaging: PET – Basic Principles
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