Calculations of a SPECT projection operator on a graphical processing unit

Francesc Massanes; Jovan G. Brankov

doi:10.1117/12.911951

9 March 2012 Calculations of a SPECT projection operator on a graphical processing unit

Francesc Massanes, Jovan G. Brankov

Proceedings Volume 8313, Medical Imaging 2012: Physics of Medical Imaging; 83133W (2012) https://doi.org/10.1117/12.911951
Event: SPIE Medical Imaging, 2012, San Diego, California, United States

Abstract

In this paper we explore the capabilities of a graphical processing unit (GPU) for the fast calculation of a tomographic projection operator in content-adaptive mesh models (CAMM). We explore the use of two distinct methods, ray-tracing and mesh element projection, both implemented on classical computers (CPU) and GPU. Both methods have already been proposed in the literature for 2D and 3D emission tomography (EM) image reconstruction using a CAMM, however, there was no clear comparison between both methods in terms of computational efficiency, which is an aim of this paper.

Citation Download Citation

Francesc Massanes and Jovan G. Brankov "Calculations of a SPECT projection operator on a graphical processing unit", Proc. SPIE 8313, Medical Imaging 2012: Physics of Medical Imaging, 83133W (9 March 2012); https://doi.org/10.1117/12.911951

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