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Hi Mahinda,

I think "preserve concentration" in SPM means "do not modulate" the image, which is what fnirt does by default... If you want to "preserve total", then you would need to multiply your image by the output of -jout in fnirt.

Cheers,
Gwenaelle


--- En date de : Ven 20.3.09, Mahinda Yogarajah <[log in to unmask]> a écrit :

> De: Mahinda Yogarajah <[log in to unmask]>
> Objet: [FSL] Preserve concentration option in FNIRT
> À: [log in to unmask]
> Date: Vendredi 20 Mars 2009, 16h21
> Dear FSL Users, 
> 
> Is there an option in FNIRT normalisation equivalent to the
> preserve
> concentrations option in SPM5 when one writes out
> normalised images ?
> 
> Thanks.
> 
> Mahinda