Quantitative evaluation of half-cone-beam data acquisition trajectories in triple-camera brain SPECT


Journal Article

In this study related to human brain SPECT imaging, simulation of half-cone-beam collimation with different scan paths is performed and compared with simulated fan-beam and parallel-hole circular orbit acquisitions. Acquisition types are quantitatively evaluated based on photon detection efficiency, root-mean-squared error (RMSE) and contrast measurements of reconstructed images. We demonstrate that triple-HCB collimation with a circle-and-helix scan path can offer up to 26% and 128% efficiency increase over fan-beam and parallel-hole collimators (for equal spatial resolutions) correspondingly, and display no visible axial sampling artifacts in reconstructed images. It has a potential for improved data acquisition and image reconstruction, producing higher image quality with smaller reconstruction error (RMSE) and better lesion detectability compared to fan-beam, parallel-hole and half-cone-beam circular orbit acquisitions. © 2007 IEEE.

Full Text

Duke Authors

Cited Authors

  • Ter-Antonyan, R; Jaszczak, RJ; Bowsher, JE; Greer, KL; Metzler, SD

Published Date

  • December 1, 2007

Published In

Volume / Issue

  • 5 /

Start / End Page

  • 3898 - 3903

International Standard Serial Number (ISSN)

  • 1095-7863

Digital Object Identifier (DOI)

  • 10.1109/NSSMIC.2007.4436970

Citation Source

  • Scopus