[Insight-users] Analyze format questions: incorrect files

Hans Johnson hjohnson at mail.psychiatry.uiowa.edu
Tue, 20 Apr 2004 14:00:22 -0500 (CDT)


Radkika,

I've the analyze reader in ITK can handle images created on any platform 
from any platform.  This is even regression tested every night, and I use 
it on both big and little endian machines all the time. I would 
guess that somehow your image was somehow created incorrectly.

Regards,
Hans


On Tue, 20 Apr 2004, Luis Ibanez wrote:

> 
> Hi Radhika,
> 
> Are you still having problems with this file conversion ?
> 
> I repeated what Benjamin suggested and saw the difference
> in endiannes in the headers (with MRIcro).  Note that ITK
> use the endiannes of the machine you are running on.
> So, if you generated this file from a Windows or Linux
> machine, the endiannes is fine.
> 
> Are you trying to read this in a Sun workstation or in a
> Mac ?
> 
> Readers are supposed to deal with endiannes, when it is
> marked correctly in the file. I guess that Benjamin is
> right in suspecting the "scale" to be the culprit.
> 
> Please let us know what you find, so we can check whether
> this is a potential bug in ITK or not.
> 
> 
>    Thanks,
> 
> 
> 
>       Luis
> 
> 
> 
> ----------------------
> Benjamin King wrote:
> 
> > Hi Radhika,
> > 
> > I opened your Analyze header files with MRIcro 
> > (http://www.psychology.nottingham.ac.uk/staff/cr1/mricro.html)
> > and they differ in a) the scale field and b) endianess.
> > In the attached header file, I set the scale field to 1 so you can see 
> > if a) is the problem.
> > If you only want to convert DICOM to Analyze, you might also consider 
> > using MRIcro or - imho even better -
> > MRIConvert (http://lcni.uoregon.edu/~jolinda/MRIConvert) instead of ITK.
> > 
> > cheers,
> >   Benjamin
> > 
> > 
> 
> 
> 
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