Title :
Robust maximum-likelihood position estimation in scintillation cameras
Author :
Fessler, Jeffrey A. ; Rogers, W. Leslie ; Clinthorne, Neal H.
Author_Institution :
Div. of Nucl. Med., Michigan Univ., Ann Arbor, MI, USA
Abstract :
The authors derive a robust ML (maximum-likelihood) position estimator that accounts for the statistical uncertainty in LSF (light-speed function) measurements. The form of the robust estimator diminishes contributions from the tails of the LSF, where the relative measurement errors are the largest. To evaluate the estimator, the authors simulated one dimension of a position-sensitive detector similar to those in the SPRINT II system.<>
Keywords :
biomedical equipment; cameras; measurement errors; radioisotope scanning and imaging; SPRINT II system; light-speed function measurements; medical diagnostic imaging; nuclear medicine; position-sensitive detector; relative measurement errors; robust maximum-likelihood position estimation; scintillation cameras; statistical uncertainty; Cameras; Maximum likelihood detection; Maximum likelihood estimation; Measurement errors; Noise measurement; Noise robustness; Nuclear medicine; Photonic crystals; Position measurement; Single photon emission computed tomography;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Santa Fe, NM, USA
Print_ISBN :
0-7803-0513-2
DOI :
10.1109/NSSMIC.1991.259236
