By Topic

Improved Bayesian image reconstruction in positron emission tomography

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Chien-Min Kao ; Dept. of Radiol. & Stat., Chicago Univ., IL, USA ; Xiaochuan Pan ; Chin-Tu Chen ; Wong, W.H.

We extend the Bayesian model (Johnson, Chen, et al., 1990, 1991), previously developed for image reconstruction and restoration, by the introduction of diagonal line sites and the use of symmetrical neighborhood configurations. A computer simulation study was performed to examine the effect of the hyperparameters, the diagonal line sites, and the size of the neighbourhood configuration on the performance of the Bayesian method. We show that for optimal performance, distinct hyperparameters should be used for the intensity sites and line sites. The results also suggested the use of a larger configuration. By comparing the near-optimal restored images, we also demonstrate that the use of diagonal line sites, along with the symmetrical configurations thus made possible, can effectively remove the blocky edge artifacts and produce images of better quality. For image reconstruction applications, in addition to the use of diagonal line sites and symmetrical neighborhood configurations, we suggested using the area-weighted projection/backprojection technique to improve the accuracy of the system response function. Quality of reconstructed images were shown to be improved for both computer simulated and real patient PET data

Published in:

Nuclear Science Symposium and Medical Imaging Conference Record, 1995., 1995 IEEE  (Volume:2 )

Date of Conference:

21-28 Oct 1995