Hi professor, The attachment is the subject after running the recon-all command. MR data were obtained on a 1.5T Philips Achieva Nova Dual MR scanner. the sequence name is T1W.3D.FFE.SENSE and the voxel size is 0.90*0.90*1mm. how should I fix the poor quality surface reconstruction?
Thanks a lot for your help. Meng Li
At 2012-05-19 23:10:31,"Bruce Fischl" fischl@nmr.mgh.harvard.edu wrote:
p.s. looks like an intensity normalization failure. Can you give us details of the acquisition? Sequence name, voxel resolution, etc....? If you upload the subject I'll take a look
cheers Bruce
On Sat, 19 May 2012, limengsecret wrote:
Hi Professor, The image blow shows the problems which occur. color lines representing the surfaces (pial and white) were not along the folding pattern, and the distance between the two sufaces was rather short. How to deal with these problems? [IMAGE] Thanks.
Meng Li
limengsecret
From: Bruce Fischl Date: 2012-05-19 22:08 To: ?? CC: freesurfer Subject: Re: [Freesurfer] how to edit the pial surface Hi Meng
Not positive I understand, but I don't think it should matter.
we'll need to see some data to diagnose this.
cheers Bruce
On Sat, 19 May 2012, ?? wrote:
Hi FreeSurfer Experts,
I had 2 question about the output troubleshooting.
?
1)?? when I used the mri_convert command, the format of the input image I choosed was 4D nii format, but not the original dicom format, which would affect the result of reconstruction?
2)?? When I checked the quality of output using tksurfer, I found the color line representing the surface (pial and white) were not along the folding pattern, and the distance between the two sufaces was rather shor
t.
Whether or not it was caused by the bad GM/WM contrast? What is the best
?? ?way
to deal with them?
?
Thanks.
?
Meng Li
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