Hi,
I would be very wary of this as I suspect that there is a byte
swapping issue happening and this can corrupt data in both
a very obvious way and also in very subtle ways. The division
trick just doesn't work in this case.
Probably best if you can upload an example to our site at:
http://www.fmrib.ox.ac.uk/cgi-bin/upload.cgi
and send us the reference number. I've seen this kind of
thing before so should be able to figure out what needs to
be done.
All the best,
Mark
On 9 Nov 2010, at 16:08, Matt Glasser wrote:
> You could divide the images by some number to get them to more reasonable
> values. If the relative intensities in the image make sense then the data
> is probably ok. If the image is all the same intensity or doesn't make
> sense after lowering the values, then you are probably stuck.
>
> Peace,
>
> Matt.
>
> -----Original Message-----
> From: FSL - FMRIB's Software Library [mailto:[log in to unmask]] On Behalf
> Of Mike Sugarman
> Sent: Tuesday, November 09, 2010 9:03 AM
> To: [log in to unmask]
> Subject: Re: [FSL] High Intensity Values
>
> Are you sure there's no way to salvage the scan? My original scan is in .img
> format, and although the intensity values are very high, I can still view
> the scan; the surrounding space outside the head just also has very high
> values (and displays as white in the viewer) and I am unable to perform BET
> on it.
>
> Thanks,
> -Mike
>
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