Re: [Freesurfer] Different slices number for control group

Is there total overlap between group and number of slices? Sounds not very good. I don't have a feel for what the MR on this and whether changing the number of slices would create systematic differences in SNR or contrast. Maybe Andre would like to weih in.

doug

On Tue, 8 Jun 2010, pikase@tin.it wrote:

Hi freesurfers!

We want to estimate the differences of cortical thickness between two groups. The images of the control group are taken from a different acquisition session. the only differences would be the number of slices (200 vs 128). It is still possible to compare the two groups?

Images were acquired on the sagittal plane on a 3T Phillips scanner, SENSE coil, voxels 1x1x1, matrix 256x256, T1 MPR.

Thanks so much for your time

Laura