[Dcmlib] CSI spectro parameters

[Mathieu Malaterre]

Stefano Peca wrote:
> Hi everyone, please help if you can!
>  
> I have a multi-voxel magnetic resonance spectroscopy file (CSI - 
> chemical shift imaging) and a T1 volume, many slices.  I need to know 
> where exactly is the CSI grid (8x8 1ml voxels) in respect to the T1 volume.
>  
> I'm using a Siemens Allegra Magnetom 3T.
>  
> The CSI dicom file has this information in the header:
>  
> sSpecPara.sVoI.sPosition.dSag            = -14.6151885
> sSpecPara.sVoI.sPosition.dCor            = 67.89309338
> sSpecPara.sVoI.sPosition.dTra            = -25.70038393
> sSpecPara.sVoI.sNormal.dSag              = -0.4226182617
> sSpecPara.sVoI.sNormal.dCor              = 0.906307787
>  
> but I don't know how to interpret it. They must somehow describe how the 
> CSI grid is oriented...  if, for instance, the first 3 of these 5 header 
> lines describes a position (maybe of the center of the grid), the 
> question is: in respect to what? to the high definition T1 image on 
> which the CSI slice was positioned, or to the center of the magnet?
>  
> Well, if someone knows what these 5 numbers are, I'll be very grateful,
> Thanks very much,


Hi Stefano,


	Sorry for the late answer. I am not familiar with those CSI file you 
are talking about. Can I suggest you ask the same question on ITK user 
mailing list ?

http://www.itk.org/mailman/listinfo/insight-users

HTH
-Mathieu