A patient setup and treatment verification system for radiation therapy having diagnostic imaging devices connected to a room containing a megavoltage radiation therapy machine. The diagnostic rooms and the megavoltage therapy room are connected to each other by openings in the shared...http://www.google.ca/patents/US5851182?utm_source=gb-gplus-sharePatent US5851182 - Megavoltage radiation therapy machine combined to diagnostic imaging devices for cost efficient conventional and 3D conformal radiation therapy with on-line Isodose port and diagnostic radiology 
