itkDCMTKFileReader Spacing Issue about itk HOT 6 OPEN

Done: #4134

from itk.

Thank you for contributing an issue! 🙏

Welcome to the ITK community! 🤗👋☀️

We are glad you are here and appreciate your contribution. Please keep in mind our community participation guidelines. 📜
Also, please check existing open issues and consider discussion on the ITK Discourse. 📖

from itk.

@hossbach-cgm thanks for the report. Could you please create a PR with your patch, which will help facilitate discussion.

from itk.

@hossbach-cgm thank you!

from itk.

# Dicom-Data-Set
SpacingBetweenSlices              [1.3]
PerFrameFunctionalGroupsSequence  
| Item                            
| | MREchoSequence                
| | PixelMeasuresSequence         
| | | Item                        
| | | | PixelSpacing              [0.55000001192092\0.55000001192092]
| | Unknown Tag & Data            
| | | Item                        
| | | | SpacingBetweenSlices      [1.3]

Do you have this data set?
ftp://medical.nema.org/MEDICAL/Dicom/DataSets/WG16/Philips/
eg in the folder Philips MR Spectroscopy/DICOM, eg the file IM_0001

There is in fact SpacingBetweenSlices at the top level and not in the PixelMeasuresSequence in a functional group sequence.
And private sequence 0x2005, 0x140f, there are probably tags from original "classic series", also SpacingBetweenSlices.
This private attribute may be Acquisition Parameters (Philips) Sequence (creator Philips MR Imaging DD 005 ).

It is not ideal, SpacingBetweenSlices at the top level doesn't belong to Enhanced MR Image Storage, it should be in PixelMeasuresSequence, at least with the current standard. I don't know if Philips always does this, as far as I know, in real life "enhanced" CT/MR are rare, usually there are still classic series.

from itk.

I am facing the same issue with simpleItk where the spacing should be [0.125,0.125,0.125] but [0.125,0.125,1.0] is returned.

from itk.