A method for generating a hollow model from a medical image, performed by operations executed within a medical imaging visualization application of a computing device, the computing device having at least one processor and at least one memory, with the operations comprising, in the computing device: generating a voxel mask from an interior space of a segmented anatomical structure, wherein the segmented anatomical structure is produced from three-dimensional medical imaging data provided to the medical imaging visualization application; extruding, within the medical imaging visualization application, a shell mask of a defined thickness from the voxel mask, wherein extruding the shell mask of the defined thickness includes generating a dilated voxel mask from the voxel mask, and removing the voxel mask from the dilated voxel mask, wherein the shell mask is modified to prevent the shell mask from conflicting with another, overlapping anatomical structure used in the medical imaging visualization application wherein the shell mask is modified to remove a binary voxel mask of the other anatomical structure if the other anatomical structure is a structure of interest, and wherein the binary voxel mask of the other anatomical structure is updated to exclude the shell mask if the other anatomical structure is not a structure of interest; generating a visualization of the extruded shell mask, the visualization of the extruded shell mask adapted to be displayed with a graphical user interface of the medical imaging visualization application; exporting data that represents the extruded shell mask from the medical imaging visualization application, wherein the exported data defines a mesh model of the shell mask; and wherein the visualization of the extruded shell mask displayed in the graphical user interface of the medical imaging visualization application is produced from the mesh model of the shell mask. generating a voxel mask from an interior space of a segmented anatomical structure, wherein the segmented anatomical structure is produced from three-dimensional medical imaging data provided to the medical imaging visualization application; extruding, within the medical imaging visualization application, a shell mask of a defined thickness from the voxel mask, wherein extruding the shell mask of the defined thickness includes generating a dilated voxel mask from the voxel mask, and removing the voxel mask from the dilated voxel mask, wherein the shell mask is modified to prevent the shell mask from conflicting with another, overlapping anatomical structure used in the medical imaging visualization application wherein the shell mask is modified to remove a binary voxel mask of the other anatomical structure if the other anatomical structure is a structure of interest, and wherein the binary voxel mask of the other anatomical structure is updated to exclude the shell mask if the other anatomical structure is not a structure of interest; wherein extruding the shell mask of the defined thickness includes generating a dilated voxel mask from the voxel mask, and removing the voxel mask from the dilated voxel mask, wherein the shell mask is modified to prevent the shell mask from conflicting with another, overlapping anatomical structure used in the medical imaging visualization application wherein the shell mask is modified to remove a binary voxel mask of the other anatomical structure if the other anatomical structure is a structure of interest, and wherein the binary voxel mask of the other anatomical structure is updated to exclude the shell mask if the other anatomical structure is not a structure of interest; generating a visualization of the extruded shell mask, the visualization of the extruded shell mask adapted to be displayed with a graphical user interface of the medical imaging visualization application; exporting data that represents the extruded shell mask from the medical imaging visualization application, wherein the exported data defines a mesh model of the shell mask; and wherein the visualization of the extruded shell mask displayed in the graphical user interface of the medical imaging visualization application is produced from the mesh model of the shell mask.