2016_Imaging for Physicists

Time-of-Flight (TOF) PET

 Difference in flight time of photons is registered

=∆ 2

x

∆

t

c

no TOF

 Probability of event

t 1

occurrence is limited to a certain area along the LOR

 Better SNR ●

Especially in the abdomen / heavy patients

t 2

TOF

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ESTRO Teaching Course Advanced Imaging: PET – Reconstruction, Contouring