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Abstract #2148

Measurement Accuracy of Non-contrast Compressed Sensing Respiratory Motion Resolved Whole Heart MRA in Thoracic Aortic Disease

Akos Varga-Szemes1, Robert E Stroud1, Davide Piccini2, John Heerfordt3, Jerome Yerly3, Lorenzo Di Sopra3, Pal Suranyi1, and U. Joseph Schoepf1
1Medical University of South Carolina, Charleston, SC, United States, 2Siemens Healthcare, Lausanne, Switzerland, 3Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland

Currently, CTA is the only noninvasive method with considerable evidence level for the detection and monitoring of thoracic aortic disease. However, CTA exposes patients to radiation and contrast media. The compressed-sensing whole-heart MRA technique that we evaluated addresses the limitations that prevent conventional MRA techniques to compete with CTA. Our approach eliminates the need for breath-holds or respiratory-navigation, provides a 3D volume of the chest without contrast administration, and allows for accurate anatomical evaluation of the thoracic aorta compared to CTA. Such MRA technique is a potential radiation- and contrast-free alternative for diagnosing and monitoring patients with thoracic aortic disease.

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