one is usually fine, although it depends on the intrinsic SNR.
cheers, Bruce On Sat, 14 Jun 2008 Valentina.Durastanti@uniroma1.it wrote:
Hi,
I'm starting to use Freesurfer to analyze SPGRs images and my question is: Do I have to use the average of two images (invol1 + invol2) or I just can use one SPGRs? Thanks Valentina