A 16 Element Phased Array Surface Coil for Time-Resolved CE-MRA at SENSE Accelerations Up to 12

Paul T. Weavers¹, Chris C. Cline¹, Casey P. Johnson¹, Phillip J. Rossman¹, Thomas C. Hulshizer¹, Stephen J. Riederer¹

A 16 element receive coil specifically designed for the calves has been constructed. The design permits close proximity of the coil to the anatomy even as the leg narrows from knee to calf, and is flexible enough to fit around a wide range of patient sizes. G-factor maps made with the 16ch coil at R = 12 compare favorably to g-maps produced with a previous 8ch coil at R = 8. In-vivo CE-MRA results are demonstrated using an accelerated acquisition with R = 12 2D SENSE providing 1mm³ resolution, a 3.5 sec update time and a 12.4 sec temporal footprint.