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

Xiao Han; Shuanghe Shi; Junguo Bian; Patrick Helm; Emil Y. Sidky; Xiaochuan Pan

doi:10.1117/12.878915

16 March 2011 Feasibility study of low-dose intra-operative cone-beam CT for image-guided surgery

Xiao Han, Shuanghe Shi, Junguo Bian, Patrick Helm, Emil Y. Sidky, Xiaochuan Pan

Proceedings Volume 7961, Medical Imaging 2011: Physics of Medical Imaging; 79615P (2011) https://doi.org/10.1117/12.878915
Event: SPIE Medical Imaging, 2011, Lake Buena Vista (Orlando), Florida, United States

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.

Citation Download Citation

Xiao Han, Shuanghe Shi, Junguo Bian, Patrick Helm, Emil Y. Sidky, and Xiaochuan Pan "Feasibility study of low-dose intra-operative cone-beam CT for image-guided surgery", Proc. SPIE 7961, Medical Imaging 2011: Physics of Medical Imaging, 79615P (16 March 2011); https://doi.org/10.1117/12.878915

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