Accession Number : ADA135061

Title :   Maximum Likelihood Reconstruction in Emission Tomography with Time-of-Flight Information: A Limited Study.

Descriptive Note : Technical rept.,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE STATISTICS CENTER

Personal Author(s) : Kaufman,L ; Morgenthaler,S ; Vardi,Y

PDF Url : ADA135061

Report Date : Oct 1983

Pagination or Media Count : 20

Abstract : The maximum likelihood reconstruction for positron emission tomography (PET) and its use in connection with time-of-flight (TOF) tomography are reviewed and the issue of trade-off between information and data (that is, time of fight information vs. additional coincidence count data) is explained. The maximum likelihood technique is then used to qualitatively assess this trade-off by means of visually comparing reconstructions. Specifically, the authors use computer simulation to generate data of PET experiments with a fixed emission density Lambda and with varying amounts of TOF information and total coincidence count data. The maximum likelihood technique is then used to reconstruct Lambda on the bases of these data sets and the different reconstructions are displayed and compared.

Descriptors :   *Maximum likelihood estimation, *Positrons, *Emission, *Tomography, *Computerized simulation, Algorithms, Pictures, Scanning, Image restoration

Subject Categories : Theoretical Mathematics
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE