1078 / 1116
4D PET-CT
• Acquire CT and PET signal with a signal
reflecting the repiratory motion
• PET signal is sampled in 10 bins of ~0.5 s
• Reduced motion-induced blurring decreased
the observed tumor volume by as much as
43%
• SUV values inside the tumor increase
free-breathing
gated
Nehmeh et al. 2004; Med.
Phys. 31:3179-3186