2013 Summer Project Week:CARMA Visualization

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Key Investigators

  • Utah: Salma Bengali, Alan Morris, Brian Zenger, Josh Cates, Rob MacLeod
An example of a thresholded isosurface. Blue: Below threshold, Green: Above threshold.


  • The workflow at CARMA for generating fibrosis scores for patients involves creating an isosurface of the left atrium wall, with regions of scar overlaid. Thresholding of the isosurface is not currently possible in Slicer and we would like to explore if this feature could possibly be added to Slicer.

Approach, Plan

  1. Discuss with available Slicer experts on possible options for implementation of this feature
  2. Integrate the feature into Slicer


We have discussed with Steve and Jim and have decided to write a loadable module in Slicer which will be able to display the regions of scar on the isosurface of the LA endocardium wall. Regions of scar will be colored using scalars stored in the .vtk model file. Thresholding of the model will involve rewriting the .vtk file and generating a new isosurface in Slicer. (See example of a thresholded isosurface above.)

Delivery Mechanism

This work will be delivered to the NA-MIC Kit as a Slicer loadable module.