I have created a volumetric mesh (FEM) using gmsh and exported it as a .vtk file (i.e. unstructuredGrid). This FE model consists of a box with an ellipsoid where ellipsoid is located inside of the box. (Scalar range is 1 to 2)
I loaded it as a model in 3D slicer and then used Probe volume with model module to generate a 3D image (i.e. .mhd file). But, unfortunately, I am not able to select the Input Volume in the Probe volume with model (it only consists two values namely rename current node and delete current node) as you can see in the screenshot below.
Did I forget any steps here ? How can I generate a 3D image volume and save it as a .mhd file or .nrrd file format ? Thanks in advance for your time and consideration.