Title :
Evaluation of simulation-based scatter correction for 3-D PET cardiac imaging
Author :
Watson, C.C. ; Newport, D. ; Casey, M.E. ; deKemp, R.A. ; Beanlands, R.S. ; Schmand, M.
Author_Institution :
CTI PET Syst. Inc., Knoxville, TN, USA
fDate :
2/1/1997 12:00:00 AM
Abstract :
Quantitative imaging of the human thorax poses one of the most difficult challenges for three-dimensional (3-D) (septaless) positron emission tomography (PET), due to the strong attenuation of the annihilation radiation and the large contribution of scattered photons to the data. In [18F] fluorodeoxyglucose (FDG) studies of the heart with the patient´s arms in the field of view, the contribution of scattered events can exceed 50% of the total detected coincidences. Accurate correction for this scatter component is necessary for meaningful quantitative image analysis and tracer kinetic modeling. For this reason, the authors have implemented a single-scatter simulation technique for scatter correction in positron volume imaging. Here, they describe this algorithm and present scatter correction results from human and chest phantom studies
Keywords :
cardiology; medical image processing; positron emission tomography; 3-D PET cardiac imaging; algorithm; chest phantom studies; detected coincidences; diagnostic nuclear medicine; heart; human studies; human thorax; patient´s arms; positron volume imaging; quantitative image analysis; septaless positron emission tomography; simulation-based scatter correction; single-scatter simulation technique; tracer kinetic modeling; Arm; Attenuation; Electromagnetic scattering; Event detection; Heart; Humans; Particle scattering; Positron emission tomography; Single photon emission computed tomography; Thorax;
Journal_Title :
Nuclear Science, IEEE Transactions on
