Gurpreet Singh Sandhu1,2, Rod P. Rezaee3, Jeffrey L. Duerk1,4, Mark A. Griswold1,4, Vikas Gulani1,2
1Department of Radiology, University Hospitals of Cleveland, Cleveland, OH, USA; 2Case Center for Imaging Research, Case Western Reserve University, Cleveland, OH, USA; 3Department of Otolaryngology-Head and Neck Surgery, University Hospitals of Cleveland, Cleveland, OH, USA; 4Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
Bolus-chase contrast enhanced MR angiography (ceMRA) of the distal leg does not provide dynamic information about arterial blood flow and suffers from limitations such as missed boluses and venous contamination. Here, application of dynamic contrast-enhanced MR angiography using time resolved imaging with stochastic trajectories (TWIST) for arteriography of the distal leg is described and a quantitative analysis of contrast dynamics of lower legs is performed. A quantitative comparison of apparent arterial lumen diameters in dynamic images obtained with the TWIST method and images acquired with a ceMRA method is also performed.