Abstract #2691

Clinically-Acceptable Non-Contrast Thoracic MRA using 3D Radial k-space Sampling and Compressed Sensing

Marc D Lindley^1,2, Daniel Kim², Kristi Carlston², Leif Jensen², Daniel Sommers², Ganesh Adluru², Edward VR DiBella², Christopher J Hanrahan², and Vivian S Lee²

¹Physics, University of Utah, Salt Lake City, UT, United States, ²Radiology, UCAIR, University of Utah, Salt Lake City, UT, United States

As an alternative to contrast-enhanced (CE) MRA, we developed an accelerated non-contrast MRA of thoracic aorta using a combination of T2-prepared and fat saturation preparations, b-SSFP readout, 3D radial stack of stars sampling with tiny golden angles, and compressed sensing. This NC-MRA was compared with standard ECG-gated CE-MRA in 8 patients. Normalized signal difference and aortic diameters were not significantly different between CE- and NC-MRA methods.

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