Maximum likelihood reconstruction for pinhole SPECT with a displaced center-of-rotation.

Published

Journal Article

The authors describe the implementation of a maximum likelihood (ML) algorithm using expectation maximization (EM) for pinhole SPECT with a displaced center-of-rotation. A ray-tracing technique is used in implementing the ML-EM algorithm. The proposed ML-EM algorithm is able to correct the center of rotation displacement which can be characterized by two orthogonal components. The algorithm is tested using experimentally acquired data, and the results demonstrate that the pinhole ML-EM algorithm is able to correct artifacts associated with the center-of-rotation displacement.

Full Text

Duke Authors

Cited Authors

  • Li, J; Jaszczak, RJ; Coleman, RE

Published Date

  • 1995

Published In

Volume / Issue

  • 14 / 2

Start / End Page

  • 407 - 409

PubMed ID

  • 18215843

Pubmed Central ID

  • 18215843

International Standard Serial Number (ISSN)

  • 0278-0062

Digital Object Identifier (DOI)

  • 10.1109/42.387721

Language

  • eng

Conference Location

  • United States