Abstract #1261

Multi-Phase Coronary MR Angiography using a 3D Cones Trajectory

Holden H. Wu^1,2, Bob S. Hu^2,3, Dwight G. Nishimura², Michael V. McConnell^1,2

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

Non-invasive coronary angiography is one of the most important goals in cardiovascular imaging and MRI is a promising modality for addressing this critical need. In this work, we present a 3D whole-heart free-breathing coronary MRI technique based on the 3D cones readout trajectory, which enables a high degree of scan time reduction compared to 3D Cartesian encoding and exhibits greater robustness to motion/flow. In addition, 2D navigator images are acquired directly over the heart to compensate for respiratory motion and multiple cardiac phases are resolved to support retrospective selection of the best phase for visualization.