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Partial volume effect (PVE) in PET generates under-estimation of radiotracer concentration in small size structures. Consequently, the image contrast is qualitatively degraded and, quantitatively, the reduced signal intensity leads to erroneous physiological parameter estimation. The most popular approach to correct for PVE is based on recovery factors (RF). RFs are first estimated from objects of...
The aim of this work is to simultaneously correct for attenuation and scatter in positron emission tomography (PET) by analytically assessing the distribution of the scattered photons using the emission images, the probability of scatter interactions and the detection efficiency. Above the usual lower energy threshold of 300 keV, the attenuated photons are dominantly those which have undergone a Compton...
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