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Abstract #0857

Prospective Motion Correction in Kidney MRI Using Free Induction Decay Navigators

Cemre Ariyurek1, Tess E Wallace1, Tobias Kober2,3,4, Aziz Koçanaoğulları1, Simon K Warfield1, Sila Kurugol1, and Onur Afacan1
1Radiology, Boston Children's Hospital and Harvard Medical School, Boston, MA, United States, 2Advanced Clinical Imaging Technology, Siemens Healthcare, Lausanne, Switzerland, 3Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland, 4LTS5, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland


Abdominal MRI scans may require breath-holding to prevent image quality degradation, which can be challenging for patients. In this study, we used free induction decay navigators (FIDnavs) to correct motion prospectively. A short calibration scan was acquired prior to the prospectively corrected scan to create a linear motion model to translate the FIDnav signal into kidney displacement. Shallow, deep and continuous deep breathing scans were acquired with the proposed technique and reconstructed images were compared to those without motion correction. The proposed technique reduces blurriness and motion artifacts in the kidneys by correcting their position prospectively during the MRI acquisition.

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