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Maniphest T15848

Add filters for the modification of diffusion image meta-data
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Description

In first version, add a filter which adapts the diffusion image based on a transformation given. This is required when the diffusion data is registered:

  • head-motion correction ( see T15846 ) requires a modification of each of the gradient directions based on a given set of transformation matrices ( 1-per-gradient-image )
  • transformation of a diffusion image : correct the gradient directions by a given transformation matrix ( 1 matrix per dataset )

Event Timeline

• hering added projects: MITK, Bugzilla.Aug 13 2013, 6:08 PM
• webechr added a subscriber: • webechr.Aug 19 2013, 1:49 PM

Note: for certain DWI acquisitions no gradient direction is given (e.g. if the protocol assumes isotropic diffusion), in these cases the gradient direction need not /cannot be adapted (GDir = (0,0,0) ).

• hering added a subscriber: • hering.Aug 20 2013, 2:07 PM

New remote branch pushed: bug-15848-DiffusionImageCorrectionFilter

• hering added a comment.Aug 20 2013, 4:17 PM

[b91c86]: Merge branch 'bug-15848-DiffusionImageCorrectionFilter'

Merged commits:

2013-08-20 15:21:50 Jan Hering [c3a348]
Fixed container typedef

2013-08-20 13:59:12 Jan Hering [0a698d]
Added direction correction

  • finite-strain extraction,
  • applying rotation to the given gradient directions

2013-08-20 10:00:57 Jan Hering [6c8bb8]
Added gradient correction step

2013-08-20 09:58:48 Jan Hering [1d986f]
Enabling filter in CMake

2013-08-19 18:41:56 Jan Hering [faf344]
Add CorrectionFilter

2013-08-19 18:21:49 Jan Hering [e2ebe8]
Merge branch 'bug-15884-Enhance-DiffusionRegistration' into bug-15848-DiffusionImageCorrectionFilter

2013-08-19 18:14:09 Jan Hering [fb5beb]
Enhance API : GetLastRotationMatrix()

  • returns the rotation matrix of the last transformation parameters
• hering added a comment.Aug 20 2013, 4:47 PM

The gradient direction correction as used in head-motion correction is now implemented ( and merged into master ).

@Christian : you can take the bug now.

• hering added a comment.Jul 8 2016, 11:33 AM

(1) does not depend on the motion correction implementation (actually inversely it does)

(2) the filters are now fully implemented, latest fixes were done in T18823

MITK · MIC · IMSY · DKFZ