Dear Griselda,
You might also be interested in the ICBM templates from elderly data
available at:
http://www.cmr.uq.edu.au/~rotor/
regards,
Greig
On Sunday, October 21, 2001, at 12:06 PM, Griselda J Garrido wrote:
> Hi,
>
> We are planning to use a free avalilable T1 mean image of elderly
> subjects in ICBM space
> (http://www.loni.ucla.edu/~thompson/AD/TEMPLATE/NEW_AFFINE_TEMPLATE/)
> as a template for VBM into the SPM program.
>
> 1) This image is 200x145x165 and 1x1x1 mm size. Would it be advisable
> to change the bounding box to 91x109x91 and the voxel size to 2x2x2 mm?
> If yes, we could perform a linear affine normalization to the SPM
> template but we are afraid of deforming to a youngish template? Is
> there a better option?
>
> 2) Is the following procedure the best one to create the a priori
> segments?
> - Segment elderly T1 template (using the youngish SPM a priori
> segments)
> - Smooth (8mm) GM, WM and csf segments
>
>
> Many thanks,
>
> Griselda J Garrido
> Centro de Medicina Nuclear - University of São Paulo - Brazil
> [log in to unmask]
> http://www.hcnet.usp.br/inrad/sitecmn/neuropsychiatry/neuropsychiatry.htm
>
>
--
Dr Greig de Zubicaray
Neuroimaging Research
Centre for Magnetic Resonance
The University of Queensland
Brisbane. QLD 4072.
AUSTRALIA
Tel: +617 3365 4250 [direct]
+617 3365 4100 [CMR]
Fax: +617 3365 3833
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