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

Volume

44

Issue

1

fYear

1997

fDate

2/1/1997 12:00:00 AM

Firstpage

90

Lastpage

97

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;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.554831

Filename

554831