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

fYear

1991

fDate

2-9 Nov. 1991

Firstpage

1851

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/NSSMIC.1991.259236

Filename

259236