Keywords: Motion Correction, Motion Correction
Motivation: Cardiac MRI is susceptible to motion-induced artifacts because of the sequential data acquisition process.
Goal(s): Evaluate the feasibility of utilizing a Frequency Modulated Continuous Wave (FMCW) Radar as a quantitative respiratory motion correction signal for free-breathing cardiac MRI.
Approach: A short calibration scan was performed to establish a motion model relating the FMCW Radar signal to the respiratory-induced heart motion. The established model was then applied during the imaging scan to perform retrospective motion correction for each k-space readout line.
Results: The FMCW radar showed good correlation to the respiratory-induced heart motion, and the proposed method effectively improved the image quality.
Impact: This study demonstrated the feasibility of utilizing FMCW radar as a surrogate to accomplish motion correction in free-breathing cardiac MRI.
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