A cabinet structure for an infusion system includes a platform, on which the system is mounted, and a shell surrounding an interior space, which contains at least a portion of the system. The shell preferably includes an opening that is sized and oriented to allow a lowering of a radioisotope generator, for the system, into the interior space, and a lifting of the generator out from the interior space. The shell may further include another opening, located at a higher elevation than the aforementioned opening, in order to provide access to a waste bottle of the infusion system.