System Models for PET Statistical Iterative Reconstruction: a review

Nuclear medicine imaging techniques, whose two major subbranches are single-photon emission computed tomography (SPECT), and positron emission tomography (PET), provide images reflecting physiologic functions unlike other traditional techniques, such as x-ray computed tomography or ultrasound, which yield anatomical structures. In order to image properties of the body's physiology, both the PET and SPECT techniques begin with the injection of a radiopharmaceutical into the subject under study. A radiopharmaceutical consists of a tracer compound that interacts with the body and a radioactive label that, by way of the emission of gamma rays, is used to track the flow and distribution of the tracer compound.
Source: Computerized Medical Imaging and Graphics - Category: Radiology Authors: Source Type: research