vol.mrml

<MRML>

<VolumeArchetypeStorage
  id="vtkMRMLVolumeArchetypeStorageNode1" name=""  hideFromEditors="true" 
  fileName="TestData/fixed.nrrd" >
</VolumeArchetypeStorage>

<VolumeDisplay
  id="vtkMRMLScalarVolumeDisplayNode1" 
  name="vtkMRMLScalarVolumeDisplayNode1" 
  hideFromEditors="true" selectable="true"  selected="false"  
  color="0.5 0.5 0.5" selectedColor="1 0 0" selectedAmbient="0.4" 
  ambient="0" diffuse="1" selectedSpecular="0.5" specular="0" power="1" 
  opacity="1" visibility="true" clipping="false" 
  sliceIntersectionVisibility="false" backfaceCulling="true" 
  scalarVisibility="false" vectorVisibility="false" tensorVisibility="false" 
  autoScalarRange="true" scalarRange="0 100" 
  colorNodeID="vtkMRMLColorTableNodeGrey"  window="90" level="44" 
  upperThreshold="32767" lowerThreshold="-32768" interpolate="1" 
  autoWindowLevel="1" applyThreshold="0" autoThreshold="0">
</VolumeDisplay>


<Volume
  id="vtkMRMLScalarVolumeNode1" name="fixed.nrrd"  hideFromEditors="false" 
  storageNodeRef="vtkMRMLVolumeArchetypeStorageNode1" displayNodeRef="vtkMRMLScalarVolumeDisplayNode1" 
  ijkToRASDirections="0   -0   1 -1   0   -0 0 -1 0 " spacing="5.2 3.75 3.75" 
  origin="-80.6 120 120" labelMap="0" >
</Volume>

</MRML>