Abstract #0632

Improved Whole-Heart Coronary MR Angiography Using a 3D Cones Phyllotaxis Sequence

Mario O. Malavé¹, Corey A. Baron¹, Nii Okai Addy¹, Joseph Y. Cheng², Bob S. Hu^1,3, Phillip C. Yang⁴, and Dwight G. Nishimura¹

¹Electrical Engineering, Stanford University, Stanford, CA, United States, ²Radiology, Stanford University, Stanford, CA, United States, ³Cardiology, Palo Alto Medical Foundation, Palo Alto, CA, United States, ⁴Cardiovascular Medicine, Stanford University, Stanford, CA, United States

We have developed a 3D cones alternating-TR steady state free precession (SSFP) sequence for whole-heart coronary MR angiography (CMRA). In this study, we compare motion artifacts and coronary image quality between a sequential-cones and phyllotaxis-cones sequence. Coronary image quality was analyzed using qualitative scores obtained through blinded reading by two board-certified cardiologists, and the IEPA vessel sharpness metric. The results of the study show that the phyllotaxis-cones acquisition can alleviate motion artifacts, improve qualitative image quality scores and increase coronary vessel sharpness.

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