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Abstract #1621

Comparison of 2D and 3D Quiescent Interval Slice-Selective Non-Contrast MR Angiography in Patients with Peripheral Artery Disease

Akos Varga-Szemes1, Pascale Aouad2, U. Joseph Schoepf1, Tilman Emrich1, Basel Yacoub1, Thomas M Todoran3, Ioannis Koktzoglou4, and Robert R Edelman4
1Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC, United States, 2Northwestern University, Chicago, IL, United States, 3Department of Medicine, Medical University of South Carolina, Charleston, SC, United States, 4Department of Radiology, Northshore University HealthSystem, Evanston, IL, United States

2D quiescent-interval slice-selective (QISS) MRA is an established technique in peripheral artery disease (PAD), however, its slice thickness is inferior to that used for computed tomography angiography (CTA). The prototype thin-slab stack-of-stars (tsSOS) QISS technique achieves CTA-like slice thickness. In this three-center study, we compared 2D-QISS and tsSOS-QISS MRA for the detection PAD in 23 patients. Overall image quality was not different between tsSOS-QISS and 2D-QISS. AUCs for PAD detection were not statistically different between the techniques (P=0.336). Our results indicate that 3D tsSOS-QISS provides similar accuracy in patients with PAD to a standard commercially available 2D-QISS technique.

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