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Abstract #1477

Accelerated imaging for visualizing interventional devices using parallel acquisition and compressed sensing reconstruction

Samira Vafay Eslahi1, Caiyun Shi2, Haifeng Wang2, Yifeng Ye3, Hanwei Chen3, Guoxi Xie4, and Jim Ji1

1Electrical and Computer Engineering, Texas A&M university, College Station, TX, United States, 2Shenzhen Institutes of Advanced Technology, Lauterbur Research Center for Biomedical Imaging, Shenzhen, China, 3Department of Radiology, Panyu Central Hospital, Guangzhou, China, 4Department of Biomedical Engineering, Guangzhou Medical University, Qingyuan, China

Visualizing implanted and/or surgical devices is crucial for interventional radiology. Conventional MRI shows the devices as dark voids or with metal artifacts. Recent methods based on susceptibility mapping using fast spin-echo sequences can offer positive contrast visualizations, but they are relatively slow. In this work, parallel acquisition and compressed sensing reconstruction are integrated to accelerate the phase-sensitive acquisition and reconstruction. Applications in brachytherapy, biopsy and stent placement are demonstrated with simulations from real data. The proposed method can increase the acquisition speed by four while preserving the images quality.

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