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Proceedings Paper

Feasibility study of low-dose intra-operative cone-beam CT for image-guided surgery
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Paper Abstract

Cone-beam computed tomography (CBCT) has been increasingly used during surgical procedures for providing accurate three-dimensional anatomical information for intra-operative navigation and verification. High-quality CBCT images are in general obtained through reconstruction from projection data acquired at hundreds of view angles, which is associated with a non-negligible amount of radiation exposure to the patient. In this work, we have applied a novel image-reconstruction algorithm, the adaptive-steepest-descent-POCS (ASD-POCS) algorithm, to reconstruct CBCT images from projection data at a significantly reduced number of view angles. Preliminary results from experimental studies involving both simulated data and real data show that images of comparable quality to those presently available in clinical image-guidance systems can be obtained by use of the ASD-POCS algorithm from a fraction of the projection data that are currently used. The result implies potential value of the proposed reconstruction technique for low-dose intra-operative CBCT imaging applications.

Paper Details

Date Published: 16 March 2011
PDF: 5 pages
Proc. SPIE 7961, Medical Imaging 2011: Physics of Medical Imaging, 79615P (16 March 2011);
Show Author Affiliations
Xiao Han, The Univ. of Chicago (United States)
Shuanghe Shi, Medtronic, Inc. (United States)
Junguo Bian, The Univ. of Chicago (United States)
Patrick Helm, Medtronic, Inc. (United States)
Emil Y. Sidky, The Univ. of Chicago (United States)
Xiaochuan Pan, The Univ. of Chicago (United States)

Published in SPIE Proceedings Vol. 7961:
Medical Imaging 2011: Physics of Medical Imaging
Norbert J. Pelc; Ehsan Samei; Robert M. Nishikawa, Editor(s)

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