Bruce,

Thanks for the input. We use a 32 channel head coil with two elements: an anterior one, and a posterior one. Thus, half of the coil was inactive. I ran the subject through the standard recon -all just to see what happened, and it looks like there were some significant errors (see attached image as an example). I will have to try it with anterior control points on and see if we get a better result. In the end, it looks like we may just have to bring this subject back in to re-do the scan.

Thanks!

James

On Sun, Jun 11, 2017 at 6:50 PM, Bruce Fischl <fischl@nmr.mgh.harvard.edu> wrote:
Hi James

it's hard to say. How many coil elements were off? You could try with
anterior control points, but you might not be able to include this subject
in a group study

cheers
Bruce

On Sun, 11 Jun 2017, Gullickson,
James wrote:

> Hello all,
> We have a subject whose T1s were collected without the anterior head coil
> engaged, due to a technical error. The posterior coil collected signal. This
> was on a Siemens Prisma 3T scanner. Would you expect Freesurfer to still be
> able to process/segment this data accurately, or is it a lost cause at this
> point?
>
> Thanks,
>
> James Gullickson
>
>
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