[MINC-users] MINC-users Digest, Vol 35, Issue 10

Dr. Sridar Narayanan sridar at mrs.mni.mcgill.ca
Wed Jun 25 12:28:02 EDT 2008


Hi Michel,

This is not a direct answer to your question, but just to alert you to a
potential gotcha with CT data. Assuming you are creating MINC volumes from
DICOM, check whether a gantry head angle was used during acquisition (DICOM
field 0018,1120). If so, then you cannot simply stack the slices into a
volume. You'll need to convert each slice to an individual .mnc file and
regrid the data using volregrid. Otherwise, you'll get a lovely shear
distortion in the volume.

Cheers,

Sridar

> Hi all, 
> 
> after registering inner ear data, I'm now playing with cardiac data. I have
> preop CT and DynaCT  data to register. Can anyone comment about the
> appropriateness of the default w_translations w_rotations and step parameters
> appropriate for this anatomy?
> 
> One of the two data sets spans a good part of the chest, but the registration
> can probably be determined by the heart and aorta alone, and perhaps
> incrementally improved with masks based on the coronary arteries and aorta.
> 
> Cheers,
> 
> Michel




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