Reimplementation of 3D slicer CPR using pure VTK

S-Linh · February 26, 2026, 7:55pm

Hello everyone,

I’m trying to develop 3d Slicer Curve Planar Reformation in my own PACS Viewer, specifically OHIF:

CurvedPlanarReformat/CurvedPlanarReformat.py

8235ee89a


      
          import SampleData
          volumeNode = SampleData.SampleDataLogic().downloadDentalSurgery()[1]
          
          # Define curve
          curveNode = slicer.mrmlScene.AddNewNodeByClass('vtkMRMLMarkupsCurveNode')
          curveNode.CreateDefaultDisplayNodes()
          curveNode.GetCurveGenerator().SetNumberOfPointsPerInterpolatingSegment(25) # add more curve points between control points than the default 10
          curveNode.AddControlPoint(vtk.vtkVector3d(-45.85526315789473, -104.59210526315789, 74.67105263157896))
          curveNode.AddControlPoint(vtk.vtkVector3d(-50.9078947368421, -90.06578947368418, 66.4605263157895))
          curveNode.AddControlPoint(vtk.vtkVector3d(-62.27631578947368, -78.06578947368419, 60.7763157894737))
          curveNode.AddControlPoint(vtk.vtkVector3d(-71.86705891666716, -58.04403581456746, 57.84679891116521))
          curveNode.AddControlPoint(vtk.vtkVector3d(-74.73084356325877, -48.67611043794342, 57.00664267528636))
          curveNode.AddControlPoint(vtk.vtkVector3d(-88.17105263157895, -35.75, 55.092105263157904))
          curveNode.AddControlPoint(vtk.vtkVector3d(-99.53947368421052, -35.75, 55.092105263157904))
          curveNode.AddControlPoint(vtk.vtkVector3d(-107.75, -43.96052631578948, 55.092105263157904))
          curveNode.AddControlPoint(vtk.vtkVector3d(-112.80263157894736, -59.118421052631575, 56.355263157894754))
          curveNode.AddControlPoint(vtk.vtkVector3d(-115.32894736842104, -73.01315789473684, 60.144736842105274))
          curveNode.AddControlPoint(vtk.vtkVector3d(-125.43421052631578, -83.74999999999999, 60.7763157894737))
          curveNode.AddControlPoint(vtk.vtkVector3d(-132.3815789473684, -91.96052631578947, 63.934210526315795))
          curveNode.AddControlPoint(vtk.vtkVector3d(-137.43421052631578, -103.96052631578947, 67.72368421052633))

This file has been truncated. show original

I’m looking to use VTK Wasm to implement this. My question is:
Since Slicer’s CPR extension is made specifically for Slicer, is it possible to translate those Slicer’s MRML abstractions to pure vtk/vtk.js code?
How should I approach this?

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Reimplementation of 3D slicer CPR using pure VTK

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