Oregon Rule Rule 333-106-0345 Purpose and Scope (1) OAR 333-106-0350 (Computed Tomography X-ray Systems: Definitions) through 333-106-0369 (Computed Tomography X-ray Systems: Report and Notification of a CT Medical Event) establishes requirements governing the use of computed tomography (CT) scanners in the healing arts; and (2)Applies to all registrants who use a CT scanner for the intentional exposure of humans for diagnostic imaging.