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Proceedings Paper

Study delay and dispersion effects in dynamic susceptibility contrast MRI based on local density random walk distribution
Author(s): Xingfeng Li; Jie Tian; Xiaoxiang Wang; Jianping Dai; Lin Ai
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Paper Abstract

The aim of this study was to assess the validation of the local density random walk (LDRW) function to correct the delayed and dispersed arterial input function (AIF) data derived from dynamic susceptibility contrast magnetic resonance imaging (DSC-MRI). Instead of using the gamma-variate function to smooth and extrapolate the AIF curves, we suggested a method which was based on diffusion with drift approach. Forty-seven AIF curves from ten patients were segmented to test the effectiveness of the proposed method. The results of the comparisons with the gamma-variate function showed that the LDRW distribution function may provide a new means for more accurate correction of AIF curves.

Paper Details

Date Published: 30 April 2004
PDF: 8 pages
Proc. SPIE 5369, Medical Imaging 2004: Physiology, Function, and Structure from Medical Images, (30 April 2004); doi: 10.1117/12.536185
Show Author Affiliations
Xingfeng Li, Institute of Automation (China)
Jie Tian, Institute of Automation (China)
Xiaoxiang Wang, Institute of Automation (China)
Jianping Dai, Chinese Capital Univ. of Medical Sciences (China)
Lin Ai, Chinese Capital Univ. of Medical Sciences (China)

Published in SPIE Proceedings Vol. 5369:
Medical Imaging 2004: Physiology, Function, and Structure from Medical Images
Amir A. Amini; Armando Manduca, Editor(s)

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