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BUG: Fix generated partial volumes misaligned with input volume node #147

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Nov 20, 2024
Merged

BUG: Fix generated partial volumes misaligned with input volume node #147

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8 changes: 8 additions & 0 deletions AutoscoperM/AutoscoperM.py
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Original file line number Diff line number Diff line change
Expand Up @@ -611,11 +611,19 @@ def onLoadPV(self):
)
return

# get the IJK to RAS direction matrix from original input volume
parentVolume = self.ui.volumeSelector.currentNode()
parentIJKToRAS = vtk.vtkMatrix4x4()
parentVolume.GetIJKToRASDirectionMatrix(parentIJKToRAS)

# check 3 transform files have been generated (translation, scale and combined)
# and load only the combined scale and translation transform for each generated partial volume
for i in range(len(vols)):
nodeName = os.path.splitext(os.path.basename(vols[i]))[0]
volumeNode = slicer.util.loadVolume(vols[i])
# ensure we maintain the original RAS/LPS directions from the parent volume
volumeNode.SetIJKToRASDirectionMatrix(parentIJKToRAS)

translationTransformFileName = os.path.join(mainOutputDir, transformSubDir, f"{nodeName}_t.tfm")
scaleTranformFileName = os.path.join(mainOutputDir, transformSubDir, f"{nodeName}_scale.tfm")
transformFileName = os.path.join(mainOutputDir, transformSubDir, f"{nodeName}.tfm")
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