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The Pennsylvania Code website reflects the Pennsylvania Code changes effective through 53 Pa.B. 1148 (February 25, 2023).

49 Pa. Code § 25.221. Definitions.

§ 25.221. Definitions.

 The following words and terms, when used in this subchapter, have the following meanings, unless the context clearly indicates otherwise:

   ARRT—The American Registry of Radiologic Technologists.

   Auxiliary personnel—Persons other than a medical doctor—allopathic physician—osteopathic physician, dentist, podiatrist or chiropractor.

   Direct supervision—Directly controlling the performance of a procedure by authorizing performance of that procedure under the specific instructions of the osteopathic physician, and monitoring performance of the procedure to ensure compliance with those instructions.

   Ionizing radiation—Gamma rays and X-rays, alpha and beta particles, high-speed electrons, neutrons, protons and other nuclear particles. The term does not include ultrasound, sound or radio waves or visible, infrared or ultraviolet light.

   Premises of an osteopathic physician—A location at which an osteopathic physician practices medicine, other than a health care facility regulated by the Department of Health, the Department of Public Welfare or the Federal government.

   Radiologic procedure—A medical diagnostic or therapeutic procedure that utilizes ionizing radiation.


   The provisions of this §  25.221 issued under sections 13a and 16 of the Osteopathic Medical Practice Act (63 P. S. § §  271.13a and 271.16); and section 812.1 of The Administrative Code of 1929 (71 P. S. §  279.3a).


   The provisions of this §  25.221 adopted July 17, 1987, effective July 18, 1987, 17 Pa.B. 3021.

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