Section 325.5384. X-ray equipment.

(1) X-ray equipment in panoramic installations shall comply with the general requirements of rule 373 excluding subrules (8) to (13).

(2)    For purposes of this rule, "image receptor" means that portion of the x-ray film instantaneously exposed by the x-ray beam subtended by a beam- limiting diaphragm immediately adjacent to the front of the radiographic film, if the panoramic technique requires such a diaphragm.

(3)   The x-ray tube housing shall be provided with a beam-limiting diaphragm which shall limit the field at the plane of the image receptor to dimensions not exceeding the dimensions of the image receptor, and shall align the center of the x-ray field with the center of the image receptor to within  2% of the SID.

(4)  Mechanical support of the tube head and image receptor shall maintain beam alignment without drift or vibration of sufficient magnitude to cause the need for manually restraining the tube or retaking the x-ray.

(5)   A device shall be provided which terminates the exposure at a preset time interval or exposure limit. The operator shall be able to terminate the exposure at any time by discontinuing pressure upon the exposure switch.

History: 1979 AC.