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Abstract #1011

Free-breathing renal R2*/QSM using 3D multi-echo UTE cones acquisition and motion-resolved reconstruction with image-based self-navigator

MungSoo Kang1, Gerald G. Behr2, Ilya Glezerman3, Ricardo Otazo1,2, and Youngwook Kee1
1Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, United States, 2Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, United States, 3Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, United States

Synopsis

Keywords: Motion Correction, Image ReconstructionRespiratory motion is a significant challenge for the acquisition of reliable renal R2*/QSM. The combination of 3D multi-echo UTE cones MRI and respiratory motion-resolved image reconstruction with an image-based self-navigator was developed to enable motion-robust renal R2*/QSM. Motion-resolved reconstruction with an image-based self-navigator showed better image quality compared to conventional gridding reconstruction and higher apparent SNR and CNR compared to motion-resolved reconstruction using the center of the k-space as navigator. 3D multi-echo UTE cones MRI and motion-resolved image reconstruction with image-based self-navigator demonstrated the feasibility of motion-robust, free-breathing, and high isotropic resolution of renal R2*/QSM.

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