3d_slicer_sample_volume_loading_and_view_manipulation.py

1import SampleData
2import slicer
3
4# Download and load a sample volume
5sampleDataLogic = SampleData.SampleDataLogic()
6volumeNode = sampleDataLogic.downloadMRHead()
7
8# Print basic information about the loaded volume
9print(f"Volume Name: {volumeNode.GetName()}")
10print(f"Volume Dimensions: {volumeNode.GetImageData().GetDimensions()}")
11
12# Get the volume scalar range
13scalarRange = volumeNode.GetImageData().GetScalarRange()
14print(f"Scalar Range: {scalarRange}")
15
16# Access the display node to modify the window/level (contrast/brightness)
17displayNode = volumeNode.GetDisplayNode()
18displayNode.SetAutoWindowLevel(False)
19displayNode.SetWindow(scalarRange[1] - scalarRange[0])
20displayNode.SetLevel((scalarRange[1] + scalarRange[0]) / 2)
21
22# Center the 3D view and slice views on the loaded volume
23layoutManager = slicer.app.layoutManager()
24for sliceViewName in layoutManager.sliceViewNames():
25    controller = layoutManager.sliceWidget(sliceViewName).sliceController()
26    controller.fitHeightToBackground()
27
28# Switch to a specific layout (e.g., Four-Up view)
29layoutManager.setLayout(slicer.vtkMRMLLayoutNode.SlicerLayoutFourUpView)