Nevada Administrative Code › Chapter 459 - Hazardous Materials › RADIATION CONTROL › X-Rays in the Healing Arts › Section 459.614 - Veterinary medicine radiographic installations

Current through
				  June 11, 2024
1. The
				  protective tube housing must be of the diagnostic type.
2. Diaphragms or cones must be provided for
				  collimating the useful beam to the area of clinical interest and must provide
				  the same degree of protection as is required of the housing.
3. The total filtration permanently in the
				  useful beam must not be less than 0.5 millimeters aluminum equivalent for
				  machines operating up to 50 kVp, 1.5 millimeters aluminum equivalent for
				  machines operating between 50-70 kVp, and 2.5 millimeters aluminum equivalent
				  for machines operating above 70 kVp.
4. A device must be provided to terminate the
				  exposure after a preset time or exposure.
5. A dead-man type of exposure switch must be
				  provided together with an electrical cord of sufficient length so that the
				  operator can stand out of the useful beam and at least 6 feet from the animal
				  during all X-ray exposures.
6. All
				  wall, ceiling and floor areas must be equivalent to or provided with applicable
				  protective barriers as required in NAC
				  459.325,
				  459.331 and
				  459.335.
7. The operator shall stand well away from
				  the useful beam and the animal during radiographic exposures.
8. No person other than the operator may be
				  in the X-ray room while exposures are being made unless the person's assistance
				  is required.
9. When an animal must
				  be held in position during radiography, mechanical supporting or restraining
				  devices should be used. If the animal must be held by a person, the person must
				  be protected with appropriate shielding devices, such as protective gloves and
				  apron, and he or she must be positioned so that no part of his or her body will
				  be struck by the useful beam. The exposure of any person used for this purpose
				  must be monitored and permanently recorded.
10. For an X-ray system that has not been
				  previously approved for human use, the degree of accuracy of:
(a) The indicated value of kVp of an X-ray
				  system used for veterinary medicine must be within 10 percent when measured or
				  the limits set by the manufacturer for that X-ray system if those limits
				  specify otherwise;
(b) The timer of
				  an X-ray system used for veterinary medicine must be within 20 percent when
				  measured or the limits set by the manufacturer for that X-ray system if those
				  limits specify otherwise; and
(c)
				  An indicator of the field size which measures in inches or centimeters on a
				  variable aperture beam-limiting device of an X-ray system used for veterinary
				  medicine equipped with such an indicator must be within 2 percent of the
				  source-image receptor distance when measured or, if a variable aperture
				  beam-limiting device of an X-ray system used for veterinary medicine is not
				  equipped with such an indicator, the X-ray field must be aligned with the
				  center of the beam axis and the adjustable field size must be
				  operable.