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Abstract #5538

Interventional MRI at 3T: Compressed Sensing SEMAC for Improved Needle Visualization

Jan Fritz1, Wesley D Gilson2, Christoph Forman3, Esther Ratihel3, Mathias Nittka3, and Allan Belzberg1

1The Johns Hopkins University School of Medicine, Baltimore, MD, United States, 2Siemens Healthcare USA, 3Siemens Healthcare GmbH

Interventional MR imaging at 3 Tesla benefits from high signal and affords visualization and subsequent targeting of submillimeter structures, but needle artifacts may be exaggerated. Optimized fast gradient echo- and turbo spin echo-based pulse sequences minimize in-plane signal displacement, but through-plane artifacts remain. Compressed Sensing Slice-Encoding Metal Artifact Correction (SEMAC) MRI has the ability to minimize through-plane displacement, and thus holds promise to improve the accuracy of device localization. We demonstrate the clinical feasibility of Compressed Sensing SEMAC TSE for interventional MR imaging at 3 Tesla and visualization of the needle artifact with high accuracy.

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