Hi,
What are the voxel sizes of your images?
From what you've shown it looks like your voxel size (in mm) has not
also changed resolution. For instance, if the 182x218x182 image has
1mm cubic resolution then I'd expect the 44x44x44 image to have
4 to 5 mm cubic resolution. If this is not the case (and the 44x44x44
image has 1mm voxel sizes) then you'd get what you show.
If this isn't the case, please send the results of fslhd run on each
of your images.
All the best,
Mark
On 31 Jan 2009, at 03:05, Veronique Weser wrote:
> Thank you.
>
> When I try this, the low res image gets converted to the higher
> resolution. but when I load both the high and low res images into
> fslview together, the actual nonzero voxels I am interested in stay
> in the lower corner of the image. That is, the activation image I am
> trying to 'blow up' does not change its actual size.
> If that doesn't make any sense, I have attached a screenshot to
> better explain it. The cursor is on the low res image (which is an
> activation image that I want to overlay), the big brain you see is
> the high res image.
> Any suggestions?
>
> Thanks!
>
> --- On Fri, 1/30/09, Matt Glasser <[log in to unmask]> wrote:
> From: Matt Glasser <[log in to unmask]>
> Subject: Re: [FSL] image scaling
> To: [log in to unmask]
> Date: Friday, January 30, 2009, 6:39 PM
>
> flirt –in <lowres> –ref <hires> –applyxfm –out <lowresNOWAThires>
>
>
> Depending on the type of data you might want to keep the default of
> trilinear interpolation, or use nearest neighbor interpolation.
>
>
> Peace,
>
>
> Matt.
>
>
> From: FSL - FMRIB's Software Library [mailto:[log in to unmask]] On
> Behalf Of Veronique Weser
> Sent: Friday, January 30, 2009 8:33 PM
> To: [log in to unmask]
> Subject: [FSL] image scaling
>
>
>
> Dear List,
>
> I have two images which are supposedly in the same space, with the
> difference being that one image has a resolution of 182x218x182 and
> the other 44x44x44. Is there any way to scale/upsample the lower
> resolution image to the higher resolution image (i.e. 'blowing' up
> the low res image)?
>
> Thanks a lot,
>
> Veronique
>
>
>
> <scaling1.jpg>
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