Hi LJ,

it all depends on the SNR of your scans. We find with 12 and 32 channel 3T data that a single mp-rage is fine, and depending on subject motion, can be better than 2 (less blurring). With single channel 1.5T data we used to need 2.

cheers, Bruce On Thu, 24 Dec 2009, liyari5018 wrote:

Hi all, Merry Cristmas!!! I have a question about recon-all: Do I have to use two MPRAGEs to run recon-all? ThX! LJ