OAR 333-106-0360: Computed Tomography X-ray Systems: Facility Design Requirements

(1) A fixed CT scanner room shall be a permanent part of the building or equipment. Portable shields shall not be used for permanent installations. (2) The CT scanner shall be situated in a protected area and is subject to design approval by a qualified expert. National Council on Radiation Protection and measurements (NCRP) Report #147 shall be used as guidance for determining adequate shielding. (3) The control panel for a fixed CT scanner shall be in a protected area. (4) Movable barriers with electrical interlocks shall not be approved in lieu of compliance with section (3) of this rule. (5) The operator of a fixed CT scanner shall be able to see and communicate with the patient from the protective area at the control panel. When an observation window is provided, it shall have a lead equivalence at least equal to that required of the control barrier in which it is installed. (6) Mobile or portable CT scanners used routinely in one location shall be considered a fixed installation and shall comply with the requirements of sections (1) through (5) of this rule. (7) CT scanners mounted in a vehicle or trailer must meet requirements of sections (1) through (5) of this rule.