Title :
An Analysis of a Distributed GPU Implementation of Proton Computed Tomographic (pCT) Reconstruction
Author :
Duffin, Kirk L. ; Karonis, Nicholas T. ; Ordonez, Caesar E. ; Papka, Michael E. ; Coutrakon, George ; Erdelyi, Bela ; Olson, Eric C. ; Uram, Thomas D.
Author_Institution :
Dept. of Comput. Sci., Northern Illinois Univ., DeKalb, IL, USA
Abstract :
Proton computed tomography (pCT) is an imaging modality being developed to support targeted dose delivery in proton therapy. It aims to accurately map the distribution of relative stopping power in the imaged body. Because protons traverse material in non-linear paths, pCT requires individual proton processing and image reconstruction becomes a time-consuming process. We discuss the transformation of image reconstruction techniques from single CPU/GPU implementations to create a hybrid multi-CPU/GPU approach. We demonstrate a reduction of computation time from almost 7 hours down to 53 seconds.
Keywords :
computerised tomography; distributed processing; graphics processing units; image reconstruction; medical image processing; radiation therapy; computation time reduction; distributed GPU implementation; dose delivery; hybrid multiCPU-GPU approach; image reconstruction technique; nonlinear paths; pCT reconstruction; proton computed tomographic reconstruction; proton processing; proton therapy; relative stopping power distribution; CUDA; GPU; Proton Computed Tomography;
Conference_Titel :
High Performance Computing, Networking, Storage and Analysis (SCC), 2012 SC Companion:
Conference_Location :
Salt Lake City, UT
Print_ISBN :
978-1-4673-6218-4
DOI :
10.1109/SC.Companion.2012.32
