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Proceedings Paper

A voxel-based partial volume correction in nuclear medicine
Author(s): Hsuan-Ming Huang; Ing-Tsung Hsiao; Christian Wietholt; Ching-Han Hsu
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Paper Abstract

Most partial volume correction (PVC) methods are ROI-based, and assume uniform activity within each ROI. Here, we extended a PVC method, developed by Rousset et al (JNM, 1998) called geometric transfer matrix (GTM), to a voxel-based PVC approach called v-GTM which accounts non-uniform activity within each ROI. The v-GTM method was evaluated using simulated data (perfect co-registered MRIs). We investigated the influence of noise, the effect of compensating detector response during iterative reconstruction methods and the effect of non-uniform activity. For simulated data, noise did not affect the accuracy of v-GTM method seriously. When detector response compensation was applied in iterative reconstruction, both PVC methods did not improve the recovery values. In the non-uniform experiment, v-GTM had slightly better recovery values and less bias than those of GTM. Conclusion: v-GTM resulted better recovery values, and might be useful for PVC in small regions of interest.

Paper Details

Date Published: 20 March 2006
PDF: 8 pages
Proc. SPIE 6144, Medical Imaging 2006: Image Processing, 61446P (20 March 2006); doi: 10.1117/12.654273
Show Author Affiliations
Hsuan-Ming Huang, Chang Gung Univ. (Taiwan)
Ing-Tsung Hsiao, Chang Gung Univ. (Taiwan)
Chang Gung Memorial Hospital (Taiwan)
Christian Wietholt, Chang Gung Memorial Hospital (Taiwan)
National Health Research Institute (Taiwan)
Ching-Han Hsu, Tsing Hua Univ. (Taiwan)

Published in SPIE Proceedings Vol. 6144:
Medical Imaging 2006: Image Processing
Joseph M. Reinhardt; Josien P. W. Pluim, Editor(s)

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