Iterative helical cone-beam CT reconstruction using graphics hardware: a simulation study

Yongsheng Pan; Ross Whitaker

doi:10.1117/12.877201

16 March 2011 Iterative helical cone-beam CT reconstruction using graphics hardware: a simulation study

Yongsheng Pan, Ross Whitaker

Proceedings Volume 7961, Medical Imaging 2011: Physics of Medical Imaging; 79612N (2011) https://doi.org/10.1117/12.877201
Event: SPIE Medical Imaging, 2011, Lake Buena Vista (Orlando), Florida, United States

Abstract

This paper presents a simulation study on iterative reconstruction methods for helical cone-beam CT using graphics hardware. While analytic methods have been proposed to achieve an exact reconstruction for helical cone-beam CT, these methods may not perform well for projection noise and imaging geometry variations, especially for spiral variations. Iterative methods such as SART are advantageous in this aspect. Since SART is computationally intense, graphics hardware (GPU) may be utilized to handle the computations and increase the efficiency of SART. GPU SART reconstruction results are presented for spiral cone-beam CT, and these results are compared with the Katsevich reconstructions in presence of projection noise and spiral variations. The comparison shows that SART is accurate, efficient, and more robust to projection noise and spiral variations than the Katsevich method.

Citation Download Citation

Yongsheng Pan and Ross Whitaker "Iterative helical cone-beam CT reconstruction using graphics hardware: a simulation study", Proc. SPIE 7961, Medical Imaging 2011: Physics of Medical Imaging, 79612N (16 March 2011); https://doi.org/10.1117/12.877201

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