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Abstract #2416

Image Quality Evaluation of Real-Time Cardiac Images Reconstructed using Linear and Golden Angle Through-Time Radial GRAPPA

Jesse I. Hamilton 1 , Prabhakar Rajiah 2 , Kestutis J. Barkauskas 1 , Katherine L. Wright 1 , Yun Jiang 1 , Vikas Gulani 2 , and Nicole Seiberlich 1

1 Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States, 2 Radiology, University Hospitals, Cleveland, OH, United States

Previous research has combined through-time radial GRAPPA with the golden angle trajectory to allow post-acquisition selection of the acceleration factor. In this work, a radiologist comparison of linear, golden angle, and self-calibrated golden angle radial GRAPPA was performed for real-time cardiac imaging. Golden angle radial GRAPPA received similar ratings in motion and anatomical visibility as linear radial GRAPPA up to R=8, despite slightly increased artifacts. No significant differences in scores were found between the two golden angle techniques. A preliminary radiologist review suggests that golden angle through-time radial GRAPPA may be preferable when the optimal temporal resolution is unknown a priori.

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