2017_IGRT course book

Respiration Correlated PET • Continuous emission  division based on respiration phase • Prospective gating:Respiratory trace triggers onset of binning for each breathing cycle • Retrospective: Respiratory trace is used to bin counts from listmode

exhale

exhale

24 26 28 30 32 34

Trigger level

inhale

Phase (°)

Temp (°C)

-75.0

25.0

125.0 225.0 325.0 425.0

Phase bin 8 Phase bin 1 Phase bin 2 Phase bin 3 Phase bin 4 Phase bin 5 Phase bin 6 Phase bin 7

ESTRO IGRT 2017