Sorry, I don't understand. I use Glm to design matrix. It works well for covariates with age and gender. But it does not work with partial volume correction. How to do it?
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On 17 Nov 2011, at 18:45, "Christine Zakrzewski" <[log in to unmask]> wrote:
> Multiple regression will control for multiple covariates.
> From: FSL - FMRIB's Software Library [[log in to unmask]] on behalf of Xiaozhen Li [[log in to unmask]]
> Sent: Thursday, November 17, 2011 9:04 AM
> To: [log in to unmask]
> Subject: [FSL] Partial volume correction
> Dear FSL experts,
> I try to do partial volume correction for ASL data in fsl. When I put the GW/WM ratios 4D images into the Glm to design matrix, there is an error report '#5 out of bound ... RBG ...'. I also try the GM images, got the same error report.
> Which one should I use, GM/WM ratios or just GM? Do I need demean the image?
> Otherwise, is there any other methods to do partial volume correction, covariates with age and gender at the same time?
> Thanks a lot!
> Best Regards,
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