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Abstract #3872

Dedicated Calf MRA at 3T: Comparison of Time-Resolved MR Angiography with Interleaved Stochastic Trajectories (TWIST) with Standard High-Resolution 3D Contrast Enhance MR Angiography (HR CeMRA)

Ismaeel M. Maged1,2, Patrick T. Norton1, Ugur Bozlar1,3, Ehab A. Abdel-Gawad1,4, Ahmed Mohamed Housseini1,2, Kenneth J. Cherry5, Klaus D. Hagspiel1

1Department of Radiology, University Of Virginia Health System, Charlottesville, VA, USA; 2Department of Radiology, Suez Canal University, Ismailia, Egypt; 3Department of radiology, Gulhane Military Medical Academy, Etlik, Ankara, Turkey; 4Department of Radiology, El Minya University, El Minya, Egypt; 5Department of Surgery, University Of Virginia Health System, Charlottesville, VA, USA

HR ceMRA is excellent in diagnosing peripheral arterial disease with a limitation of venous contamination in the calf station. TWIST allows good discrimination between arterial and venous enhancement. Diagnostic performance of TWIST and HR ceMRA were compared in 8 patients at the calf station. TWIST and HR ceMRA perform similarly at 3T, except for the distal calf were TWIST overestimates stenosis. A combined MR imaging protocol both techniques provides a robust approach to the assessment of peripheral artery disease that would not be limited by venous contamination.