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Proceedings Paper

Robustness of the brain parenchymal fraction for measuring brain atrophy
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Paper Abstract

Other researchers have proposed that the brain parenchymal fraction (or brain atrophy) may be a good surrogate measure for disease progression in patients with Multiple Sclerosis. This paper considers various factors influencing the measure of the brain parenchymal fraction obtained from dual spin-echo PD and T2-weighted head MRI scans. We investigate the robustness of the brain parenchymal fraction with respect to two factors: brain-mask border placement which determines the brain intra-dural volume, and brain scan incompleteness. We show that an automatic method for brain segmentation produces an atrophy measure which is fairly sensitive to the brain-mask placement. We also show that a robust, reproducible brain atrophy measure can be obtained from incomplete brain scans, using data in a centrally placed subvolume of the brain.

Paper Details

Date Published: 9 May 2002
PDF: 5 pages
Proc. SPIE 4684, Medical Imaging 2002: Image Processing, (9 May 2002); doi: 10.1117/12.467153
Show Author Affiliations
M. Stella Atkins, Simon Fraser Univ. (Canada)
Jeffery J. Orchard, Simon Fraser Univ. (Canada)
Benjamin Law, Simon Fraser Univ. (Canada)
Melanie K. Tory, Simon Fraser Univ. (Canada)


Published in SPIE Proceedings Vol. 4684:
Medical Imaging 2002: Image Processing
Milan Sonka; J. Michael Fitzpatrick, Editor(s)

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