This paper presents an application of Ramadge-Wonham supervisory control theory to a
patient support system for MRI scanners. The obtained controller was implemented and
tested on real hardware. A distinguishing feature of the proposed application is that the
evolvability of the controller is an essential requirement. By evolvability is the ability to adapt
the controller to meet modified control objectives. The experiments conducted in the course
of the case-study indicate that the use of supervisory control theory improves the evolvability
of the controller.