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Proceedings Paper

Advanced material separation technique based on dual energy CT scanning
Author(s): Alexander A. Zamyatin; Anusha Natarajan; Yu Zou
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Paper Abstract

We propose a method for material separation using dual energy data. Our method is suitable to separation of three or more materials. In this work we describe our method and show results of numerical simulation and with real dual-energy data of a head phantom. The proposed method of constructing the material separation map consists of the following steps: Data-domain dual energy decomposition - Vector plot - Density plot - Clustering - Color assignment. Density plots are introduced to allow automatic cluster separation. We use special image processing methods, including Gaussian decomposition, to improve the accuracy of material separation. We also propose using the HSL color model for better visualization and to bring a new dimension in material separation display. We study applications of bone removal and virtual contrast removal. Evaluation shows improved accuracy compared to standard methods.

Paper Details

Date Published: 13 March 2009
PDF: 10 pages
Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 725844 (13 March 2009); doi: 10.1117/12.811703
Show Author Affiliations
Alexander A. Zamyatin, Toshiba Medical Research Institute USA (United States)
Anusha Natarajan, Toshiba Medical Research Institute USA (United States)
Yu Zou, Toshiba Medical Research Institute USA (United States)

Published in SPIE Proceedings Vol. 7258:
Medical Imaging 2009: Physics of Medical Imaging
Ehsan Samei; Jiang Hsieh, Editor(s)

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