GPU-accelerated iterative reconstruction for limited-data tomography in CBCT systems

BMC Bioinformatics
Claudia de MolinaM Abella

Abstract

Standard cone-beam computed tomography (CBCT) involves the acquisition of at least 360 projections rotating through 360 degrees. Nevertheless, there are cases in which only a few projections can be taken in a limited angular span, such as during surgery, where rotation of the source-detector pair is limited to less than 180 degrees. Reconstruction of limited data with the conventional method proposed by Feldkamp, Davis and Kress (FDK) results in severe artifacts. Iterative methods may compensate for the lack of data by including additional prior information, although they imply a high computational burden and memory consumption. We present an accelerated implementation of an iterative method for CBCT following the Split Bregman formulation, which reduces computational time through GPU-accelerated kernels. The implementation enables the reconstruction of large volumes (>10243 pixels) using partitioning strategies in forward- and back-projection operations. We evaluated the algorithm on small-animal data for different scenarios with different numbers of projections, angular span, and projection size. Reconstruction time varied linearly with the number of projections and quadratically with projection size but remained almost uncha...Continue Reading

References

Dec 22, 2010·Bioinformatics·J I Agulleiro, J J Fernandez
Jun 2, 2011·Physics in Medicine and Biology·Xun JiaSteve B Jiang
Sep 13, 2011·Computer Methods and Programs in Biomedicine·M AbellaM Desco
Apr 7, 2012·International Journal of Biomedical Imaging·David S SmithE Brian Welch
Sep 2, 2014·BMC Research Notes·Miriam LeeserJames Brock
Apr 4, 2015·Medical Physics·Dmitri MateninePhilippe Després

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Citations

Sep 14, 2018·PloS One·Monica AbellaManuel Desco
Apr 4, 2019·Scientific Reports·Anne Caroline OenningBenjamin Salmon
Apr 3, 2020·Visual Computing for Industry, Biomedicine and Art·Gengsheng L Zeng
Oct 13, 2020·Journal of X-ray Science and Technology·Temitope E KomolafeXiaodong Yang

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Methods Mentioned

BETA
X-ray

Software Mentioned

CUDA
NVidia
Windows
MATLAB
CUBLAS
Linux
OpenMP
NumProj
BiCGStab
FUX

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