Hi Bruce,
I have tried the procedure just as what you mentioned in your email, but it didn't
work. I edited the wm volume, added some voxels with lower T1 value (around 85) as the
part of white matter by comparing the wm and T1 volumes, saved the wm volume, and ran
the Create Surface process again. After that, I still could not find significant
improvement on the segmentation. It seemed that Create Surface didn't use the voxels I
added. Are there any ideas on it?
Thanks,
Xiangchuan
======== Start Of Original Message ========
Date: 2002-10-30 Time: 14:53:00
From: Bruce Fischl ([EMAIL PROTECTED])
To: freesurfer ([EMAIL PROTECTED])
Subject: Re: Question on segmentation
>could you be more explicit about what you did? You should be able to edit
>the wm volume, save it, then rerun the filling and inflation to regenerate
>the surfaces incorporating your changes.
>
>cheers,
>Bruce
>
>--------------------------------------------------------
>Bruce Fischl email: [EMAIL PROTECTED]
>Mass. General Hosp. NMR Center. tel:(617)-726-4897
>Rm. 2328, Building 149, 13th Street fax:(617)-726-7422
>Charlestown, MA 02129 USA
>
>
>
>On Wed, 30 Oct 2002, Xiangchuan Chen wrote:
>
>> Hi all,
>>
>> I found that the segmentation of the white matter near the occipital pole of my
>data was not quite accurate. I tried to add some voxels to the wm volume there, but
>the FreeSurfer didn't take them into account. Then, how can I improve the
>segmentation at this part of brain?
>>
>> Thanks,
>> Xiangchuan Chen
>>
>>
========= End Of Original Message =========
