3D volume construction algorithm

[Nenumarokas]

Hello,

I was wondering how the 2D layers of DICOM are converted to a volume. I would assume it uses something like alphashape, but in 3D?
I tried to find the implementation to no avail.

Additionally, how are the images filtered to preserve tissue but remove the whatever-else around it? I have this example of a heart:

[nroduit]

You should start by looking at the documentation. The implementation uses OpenGL and shaders.