Methods to reconstruct emission and transmission data in 3D PET

Author

Becher, A.J. ; Karp, J.S. ; Matej, S. ; Kinahan, P.E.

Author_Institution

Dept. of Radiol., Pennsylvania Univ., Philadelphia, PA, USA

Volume

2

fYear

1997

fDate

9-15 Nov 1997

Firstpage

1082

Abstract

Methods of reconstruction and quantitation are developed for a 3D system and are evaluated on the HEAD PENN-PET scanner, which has a very large axial acceptance angle (±28° in the center) and large axial field-of-view without septa (25.6 cm). To overcome the difficulties of data storage and reconstruction time with 3D reconstruction, the authors have reduced the size of the 4-D projection matrix required for 3D-RP reconstruction, and compared the results to the Fourier rebinning (FORE) algorithm. Both approaches achieve a favorable tradeoff in data storage requirements, reconstruction time, and accuracy that are suitable for clinical use. The authors have also studied the application of the FORE algorithm to transmission scans acquired with a singles point source (¹³⁷Cs) so that data quantitation can be performed

Keywords

image reconstruction; medical image processing; positron emission tomography; 25.6 cm; 3D PET; ¹³⁷Cs; Cs; FORE algorithm; Fourier rebinning algorithm; HEAD PENN-PET scanner; axial acceptance angle; data reconstruction methods; emission data; medical diagnostic imaging; nuclear medicine; singles point source; transmission data; Artificial intelligence; Brain; Geometry; Head; Image reconstruction; Image sampling; Memory; Positron emission tomography; Radiology; Sampling methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1997. IEEE

Conference_Location

Albuquerque, NM

ISSN

1082-3654

Print_ISBN

0-7803-4258-5

Type

conf

DOI

10.1109/NSSMIC.1997.670497

Filename

670497