Hi- please have a look inside the sienax script; the reprted volume
desnit include CSF. Cheers
--------------------
Stephen M. Smith, Professor of Biomedical Engineering
Associate Director, Oxford University FMRIB Centre
FMRIB, JR Hospital, Headington,
Oxford. OX3 9 DU, UK
+44 (0) 1865 222726 (fax 222717)
[log in to unmask]
http://www.fmrib.ox.ac.uk/~steve
----------------------
On 7 Jun 2010, at 20:11, Gilberto Sousa Alves <[log in to unmask]>
wrote:
> Hello Stephen,
>
> I obtained ICV by multiplying Brain volume (found in the SIENAX
> report) with VNSCALING. (I assume that this will give me adjusted
> values for head size). For example, in one subject the Brain volume
> reported by SIENAX was 1,385678.14. This value was multiplied by the
> VSCALING (1.1299), thus obtaining 1,565722.44. The latter was
> assumed to be the Total Intracranial Volume. However the brain
> volume calculated by FAST (CSF + GM + WM) for the same patient was
> higher and corresponded to 1,678118.61. This does not seem possible
> and I wonder if there is anything wrong in my procedure.
> Thank you very much,
>
> Gilberto Sousa Alves
>
> Wolfgang Goethe University,
>
> Frankfurt am Main
>
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