Dear Antonios,
I didn't realise that your image had no origin. In this case, for
Analyze
images with no origin set, the default coordinates are used which are
simply positively scaled versions of the voxel coordinates. Only when
origins are set (indicating standard space coordinates are known) will
the voxel and mm coordinates in x have different signs. So what you
have at the moment is actually perfectly normal and fine. Sorry for
not realising this sooner.
The only question you need to decide upon is whether the left and
right sides of the brain are consistent with the labels reported by
fslview. If they are, then everything is fine. If not, you will
need to
use avwswapdim to change the image to make it consistent in left-right.
Obviously you need some way of determining left and right from the
images themselves to do this. I hope you have one.
All the best,
Mark
On 14 Feb 2007, at 12:46, Antonios - Constantine wrote:
> Dear Mark,
>
> I loaded tha avg152T1_LR-marked image and the x-voxel and mm
> coordinates
> were changing in a correct way,so fslview works fine.
> But with my image, things are quiet strange as i mentioned to my
> previous mail
> I also noticed that the cordinates in the reference image
> (avg152T1_LR-marked) are (0,0,0) in the center of the brain while
> in my
> image the (0,0,0) is at the bottom right of the scan far away from
> the image
> as if the whole coordinate system in my image has been translated.
> I don't know what is wrong here and how can i fix that.
>
> I've also uploaded my Analyze image (DICOM image which was
> converted to
> Analyze with MRIcro) with the ref ID:763072
>
> Many thanks for once more
> Antonios-Constantine Thanellas
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