Image-reconstruction of data from SUPER PETT I: A first-generation time-of-flight positron-emission tomograph

Conference · Fri Jan 31 23:00:00 EST 1986 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:5805694

Politte, D G; Hoffman, G R; Beecher, D E; Ficke, D C; Holmes, T J; Ter-Pogossian, M M

A new image-reconstruction algorithm for time-of-flight (TOF) assisted positron-emission tomography is presented. This linear algorithm differs from previously published linear algorithms in the way the angular information of the measurements is used. The needed computations are reduced by coalescing data having angles within a range into a smaller number of ''group'' angles. This angle-reduction is made possible by the additional TOF measurement. It is shown that in the limit as the number of groups is very large this reduced-angle weighting algorithm is the same as the confidence-weighting algorithm. Similarly, if the data are grouped into a single angular range, the new algorithm is the same as the most-likely-position algorithm.

• Research Organization: Mallinckrodt Inst. of Radiology, Div. of Radiation Sciences, Inst. for Biomedical Computing, Washington Univ., St. Louis, MO 63110
• OSTI ID: 5805694
• Report Number(s): CONF-851009-
• Journal Information: IEEE Trans. Nucl. Sci.; (United States), Journal Name: IEEE Trans. Nucl. Sci.; (United States) Vol. NS-33:1; ISSN IETNA
• Country of Publication: United States
• Language: English

Related Subjects

550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
ALGORITHMS
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
EMISSION COMPUTED TOMOGRAPHY
IMAGE PROCESSING
MATHEMATICAL LOGIC
MEASURING INSTRUMENTS
POSITRON COMPUTED TOMOGRAPHY
PROCESSING
SPECTROMETERS
TIME-OF-FLIGHT METHOD
TIME-OF-FLIGHT SPECTROMETERS
TOMOGRAPHY