Improved A-P Parallel MRI of the Spine using a Twisted Array
Vijayakumar S, King S, Duensing G, Huang F, Saylor C
In Vivo Corporation
Spine MRI tends to be done with A-P phase encoding, without the speed-up benefit of parallel MRI, because traditional spine arrays do not have adequate g-factor performance for A-P phase encoding. Here a Twisted Array is shown to improve g-factor not only for parallel MRI in the S-I direction (g<1.3), but now also for A-P parallel MRI, while minimizing the number of Rx-channels used. It may now be feasible to perform R=2 speed-up in the A-P direction for spine MRI.