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Abstract #0331

Frequency Modulated Continuous Wave Radar-based prospective respiratory motion correction: Initial application for 2D cardiac cine MRI

Jiameng Diao1, Yuyang Ren1, Wenjian Liu1, Peng Liu2, Han Wang2, Jiayu Zhu2, Jian Xu3, Zijian Zhou1, Haikun Qi1,4, and Peng Hu1,4
1ShanghaiTech University, Shanghai, China, 2United Imaging Healthcare, Shanghai, China, 3UIH America, Houston, TX, United States, 4Shanghai Clinical Research and Trial Center, Shanghai, China

Synopsis

Keywords: Motion Correction, Motion Correction

Motivation: Respiratory motion during data acquisition poses significant challenges in cardiac MRI

Goal(s): In this study, we proposed a non-contact prospective motion estimation and correction technique using Frequency Modulated Continuous Wave radar signals.

Approach: The FMCW radar system was developed to measure chest movement during breathing. A calibration scan was performed to create a patient-specific motion model, correlating respiration-induced heart motion with the FMCW radar signal. This model was then used to enable real-time motion estimation and correction during the imaging scan, aligning each k-space readout line by tracking the slice location.

Results: The proposed method effectively improved the image quality.

Impact: In this study, we demonstrated that the FMCW radar signal is a suitable surrogate for motion estimation and correction. The proposed respiratory motion-correction technique shows promising potential in reducing motion artifacts in cardiac MRI.

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Keywords