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Abstract #1880

Non-Contrast Abdominal Angiography Using Continuous Arterial Spin Labeling and Background Suppression

Philip M. Robson1, Weiying Dai1, Ajit Shankaranarayanan2, David C. Alsop1

1Radiology, Beth Israel Deaconess Medical Center, Boston, MA, USA; 2Applied Science Laboratory, GE Healthcare, Menlo Park, CA, USA

Pulsed Arterial Spin Labelling (ASL) techniques applied to abdominal angiography often require a complex optimization of inversion time because it influences background intensity, sensitivity, and robustness to delayed or slow inflow. We used continuous ASL combined with background suppression to obtain subtraction angiograms of the body with low background, high sensitivity, and robustness to delayed arterial arrival. Large field of view angiograms were obtained which clearly show the major vessels, including the renal arteries, and many branching vessels. Focused on the kidneys, angiograms suitable for the assessment of renal artery stenoses were obtained.