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Positive Contrast Susceptibility MR Imaging Using GPU-based Primal-Dual Algorithm | | Haifeng Wang
; Fang Cai
; Caiyun Shi
; Jing Cheng
; Shi Su
; Zhilang Qiu
; Guoxi Xie
; Hanwei Chen
; Xin Liu
; Dong Liang
; | | Date: |
17 Jun 2020 | | Abstract: | The susceptibility-based positive contrast MR technique was applied to
estimate arbitrary magnetic susceptibility distributions of the metallic
devices using a kernel deconvolution algorithm with a regularized L-1
minimization.Previously, the first-order primal-dual (PD) algorithm could
provide a faster reconstruction time to solve the L-1 minimization, compared
with other methods. Here, we propose to accelerate the PD algorithm of the
positive contrast image using the multi-core multi-thread feature of graphics
processor units (GPUs). The some experimental results showed that the GPU-based
PD algorithm could achieve comparable accuracy of the metallic interventional
devices in positive contrast imaging with less computational time. And the
GPU-based PD approach was 4~15 times faster than the previous CPU-based scheme. | | Source: | arXiv, 2006.9808 | | Services: | Forum | Review | PDF | Favorites | |
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