Dear John,
Thanks for your reply!
Maybe I haven't describe my question in the right way because of my poor
English writing and the limited knowledge of image processing algorithms. I
have posted a question regarding to making tissue probability
maps to this mailing list long time ago, and you gave me some explanation
about this question nicely. Since I'm dealing with the data of elder subjects,
I still want to try to apply a customized template to see the difference
compared to appling the stanndard template.
So, I followed the tutorial you wrote. After using the New Segment tool
of SPM8, I got C1*.nii, C2*.nii, C3*.nii and
rC1*.nii, rC2*.nii, rC3*.nii for GM, WM and CSF. Then I
want to use 'Dartel: Creat Templates' to create the template of GM, WM, and
CSF which can be used as the tissue probability maps in the 'Segment' step of
SPM8. Besides, I want to create the whole brain T1 template on which the group
statistical results could be overlaid. However, I found that when I used
three groups of images in the 'Dartel: Creat Templates' step (three channels
of images: rC1*.nii, rC2*.nii, rC3*.nii), I only got a template of
GM. Then I tried to only use one channle of images (rC2*.nii), I got a
template of WM.
Therefore, could I just run the 'Dartel: Creat Template' three times
with only one channel of images of rC1*.nii, rC2*.nii or rC3*.nii in one time
in order to get the templates of GM, WM and CSF which can be used as the
tissue probability maps? But I'm confused with that even I used three channels
of images (GM and WM and CSF), the only template I gor only contain the gray
matter? So I don't know if I can create the customized wholebrain T1 template
using Dartel.
By the way, I also want to ask you about another simple question. I want
to try to do the 1st level analysis in the native space of each subject. After
the realignment of functional data, I use Coregister:Estimate to register T1
anatomical image to mean functional image derived from the realignment step.
Then I smoothed the unnormalized functional data and doid the 1st-level
analysis. After that, I can overlay the spmT image on the subject's own T1
image. Is this right?
Thank you very much!
2011-07-08
李琳玲
Linling Li
Research Centre for Neural
Engineering
--------------------------------------
Phone:
+86-755-86392232
Email:
[log in to unmask]Shenzhen Institutes of Advanced
Technology,
Chinese Academy of
Sciences.
发件人： John Ashburner
发送时间： 2011-07-07
18:45:53
收件人： SPM
抄送：
主题： Re: [SPM] Qestion about
making whole brain T1 template using DARTEL
Use check reg to display the images, and when you select the file,
change the 1 in the user interface to 1:4 instead. This allows more
than just the first volume to be selected.
Best regards,
-John
> Dear all,
>
> Is it possible to make a whole brain T1 template using DARTEL? I tried
> according to the tutorial wrote by
> John Ashburner(VBM Tutorial,March 15, 2010). After DARTEL(Create
> Template)(the input were rC1*.nii, rC2*.nii, rC3*.nii in three channels),
> the template I got only included gray matter.
>
> Thanks a lot in advance!
>
>
> 2011-07-07
> ________________________________
> 李琳玲
>
> Linling Li
> Research Centre for Neural Engineering
> --------------------------------------
> Phone: +86-755-86392232
> Shenzhen Institutes of Advanced Technology,
> Chinese Academy of Sciences.