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. Maged^1,2, Patrick T. Norton¹, Ugur Bozlar^1,3, Ehab A. Abdel-Gawad^1,4, Ahmed Mohamed Housseini^1,2, 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.