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Abstract #0479

An Exploration of Parallel Imaging System for Very-low Field (50mT) MRI Scanner

Lei Yang1, Yan Kang1, Zheng Xu2, and Hui Han3
1Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, China, 2School of Electrical Engineering, Chongqing University, Chongqing, China, 3Department of Radiology, Weill Medical College of Cornell University, New York, NY, United States

Synopsis

Keywords: Low-Field MRI, Low-Field MRI

Motivation: The prolonged scanning time of very-low field (VLF) magnetic resonance imaging (MRI) scanners diminishes both patient comfort and operational efficiency.

Goal(s): Our objective was to cut scanning time by half.

Approach: We developed a parallel imaging (PI) technique containing an eight-channel phased-array coil and parallel imaging (PI) method tailored for VLF MRI scanners.

Results: Head imaging experiments on healthy volunteers demonstrated that the proposed PI technique outperformed two commonly used PI methods, enabling the VLF MRI scanner to achieve comparable image quality with a 72.5% increase in signal-to-noise ratio (SNR) relative to fully sampled images, while reducing the scanning time by over 50%.

Impact: We introduce, for the first time, a PI technique specifically tailored for VLF MRI scanners. This technique halves the scanning time, which could be especially beneficial for stroke patients requiring VLF MRI assessments.

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