removing segments of MRI 3D model

Hi, I’m aware that I can use VTK to get a 3D visualisation of an MRI DICOM data set, however, my next goal is to be able to remove parts of the 3D brain model so that I can focus on and only see a specific part of the brain. Is this something I can do using VTK only or will I have to use ITK also? Thank you.

VTK can do blank out parts of an image using a stencil or use a mask to hide certain parts of an image during volume rendering.

Your main task will be to define that stencil/mask, which is more an application-level feature than a library feature. See for example how it is done in 3D Slicer: