Improve Markup Rendering Speed (convert to spherical surface?)

Support
1

I have a bunch of RAS space coordinates (~1000) that I want to render on top of an MRI, atlas, and surfaces from 3D segmentation. I can make them into an .fcsv and import them into Markups, and they show up appropriately, but it’s extremely slow to do anything (sometimes it will hang for minutes if I pan the image).

How could I do this in a way that’s less computationally intensive? I’m thinking if I just had the marker spheres as voxel data, it would render fine, is there a built in way to “export” the markup glyphs as voxels or surfaces?

2

Do you use the latest Slicer Stable Release? Rendering of markups with many points may be slower in earlier versions.

You can further speed up rendering by:

  • hiding point labels: Markups module → Display → Advanced → Control Point Labels → uncheck)
  • locking the control points (disable interaction): Markups module → Control Points → Interaction → click the first icon so it appears as a closed lock