2016_Imaging for Physicists

4D-PET/CT  Respiratory organ or lesion motion induces degradation effects on PET/CT data  4D-PET/CT acquisition improves image quality and quantitative accuracy

● Respiratory monitoring synchronized to 4D-PET and 4D-CT l Pressure sensor l Spirometry system, … ● 4D-PET l Preferentially recorded in 3D mode l data sorted into different phases of the breathing cycle  Prospective sorting  Retrospective (list mode acq.) ● 4D-CT for phase-sensitive attenuation correction!

Breathing Signal:

amplitude [a.u.]

0

50

100

time [s]

PET acquisition time:

12

ESTRO Teaching Course Advanced Imaging: PET – Reconstruction, Contouring