Title :
Analytical study of a three dimensional imaging system using both single and coincident pair photons [tomography]
Author :
Liang, Zhengrong
Author_Institution :
Duke Univ. Med. Center, Durham, NC, USA
Abstract :
An analytical study of a three-dimensional positron-emission imaging system using both coincident pair-photon and noncoincident single-photon events is presented. The utilization of the noncoincident single-photon events at 511 keV to supplement the coincident pair-photon measurements for three-dimensional image reconstruction is described. Detector efficiency and resolution of this imaging system are calculated. Computer simulation and calculation of sensitivity, signal-to-noise ratio, noise background, and contrast are carried out for a cylindrical water phantom. Comparisons of these four factors between this imaging system and the conventional positron-emission imaging system are given
Keywords :
computerised picture processing; computerised tomography; noise; radioisotope scanning and imaging; sensitivity analysis; 511 keV; SNR; biomedical imaging; coincident pair photons; computerised tomography; contrast; cylindrical water phantom; detector efficiency; detector resolution; image reconstruction; noise background; noncoincident single-photon events; picture processing; positron-emission imaging system; sensitivity; three dimensional imaging system; Brain; Collimators; Detectors; Electromagnetic scattering; Image analysis; Image reconstruction; Positron emission tomography; Radioactive decay; Signal to noise ratio; Single photon emission computed tomography;
Conference_Titel :
Southeastcon '89. Proceedings. Energy and Information Technologies in the Southeast., IEEE
Conference_Location :
Columbia, SC
DOI :
10.1109/SECON.1989.132577
