THC

CACAO

Compton scattering and attenuation in the patient

same

same

Number of collected photons

low

×1000

Septal penetration in the collimator

5%

weaker

Noise Amplification in the reconstruction

worse

weak

Noise amplification with source to collimator distance

worse

weak

Noise amplification with matrix size

worse

weak

Benefiting from a intrinsic spatial resolution improvement

sensitivity

++

Depth of interaction in the detector

weak

worse

Degradation of detector performances due to high count rate

weak

worse

Reconstruction highly regularized at low resolution

weak

worse