Meeting Banner
Abstract #3897

Comparison of Subtractive and Non-Subtractive Nonenhanced MR Angiography for Peripheral Arterial Disease: a Pilot Study

MAGNA25Emily Ward1, NavYash Gupta, Eugene Dunkle1, Christopher Glielmi2, Robert R. Edelman1, 3

1Radiology, NorthShore University HealthSystem, Evanston, IL, United States; 2Siemens Healthcare; 3Radiology, Northwestern University, Chicago, IL, United States

Nonenhanced techniques can be a useful alternative to contrast-enhanced MRA for patients with peripheral arterial disease. Both subtractive and non-subtractive approaches have been proposed. The purpose of this pilot study was to determine the relative merits and accuracy of the two types of nonenhanced approaches. Our data showed good sensitivity and excellent inter-observer agreement for PAD using either subtractive or non-subtractive nonenhanced MRA. In this pilot study, specificity and image quality were significantly better for QISS than Native SPACE, due to substantially reduced sensitivity to motion artifacts and lack of dependence on selection of trigger delays.