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Abstract #2669

Acceleration-Selective Magnetic Resonance Angiography

Kalina V Jordanova 1 , Taehoon Shin 2 , Adam B Kerr 1 , and Dwight G Nishimura 1

1 Electrical Engineering, Stanford University, Stanford, CA, United States, 2 Diagnostic Radiology and Nuclear Medicine, University of Maryland, Baltimore, MD, United States

We design a new acceleration-selective (AS) magnetization preparation pulse sequence that generates arterial image contrast directly using a single acquisition and does not require subtraction. The method allows for nulling times to be chosen for optimal background suppression. Refocusing pulses were incorporated into the AS pulse to mitigate the effects of off-resonance frequency and B1 variations on the excitation profile. We demonstrate the methods application for lower extremity MRA in healthy volunteers at 1.5T.

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