DHS 157.03(251)(251) “Person in control” means the individual directly responsible for safe operation of the radiation installation. DHS 157.03(252)(252) “Personal supervision” means guidance and instruction by the supervisor who is physically present at the jobsite and watching the performance of the operation in such proximity that contact may be maintained and immediate assistance given as required. DHS 157.03(252g)(252g) “Personnel dosimeter”means a dosimeter assigned to an individual. DHS 157.03(252r)(252r) “Personnel security screening system” means any x-ray equipment used on humans for security evaluation. DHS 157.03(253)(253) “Phantom” means a volume of material behaving in a manner similar to tissue with respect to the attenuation and scattering of radiation. DHS 157.03 NoteNote: This requires that both the atomic number (Z) and the density of the material be similar to that of tissue.
DHS 157.03(254)(254) “Pharmacist” means an individual licensed under ch. 450, Stats., to practice pharmacy. DHS 157.03(255)(255) “Physician” means a medical doctor or doctor of osteopathy licensed under ch. 448, Stats., to prescribe drugs in the practice of medicine. DHS 157.03(256)(256) “Picture element” means an elemental area of a tomogram. DHS 157.03(257)(257) “Planned special exposure” means an infrequent exposure to radiation, separate from and in addition to the annual occupational dose limits, that requires a licensee or registrant to calculate the dose to be received by individuals prior to initiation of the planned task, as required under s. DHS 157.22 (6). DHS 157.03(258)(258) “Pocket dosimeter” means a type of individual monitoring device that allows the user to view the accumulated radiation exposure received as recorded by the device. DHS 157.03(259)(259) “Podiatrist” means an individual licensed under ch. 448, Stats., to practice podiatry. DHS 157.03(260)(260) “Pool irradiator” means any irradiator where the sources are stored or used in a pool of water including panoramic wet-source-storage irradiators and underwater irradiators. DHS 157.03(261)(261) “Portable x-ray equipment” means x-ray equipment designed to be hand-carried. DHS 157.03(262)(262) “Position indicating device” or “PID” means a device on dental x-ray equipment used to indicate the beam position and to establish a definite source-surface distance from the skin. DHS 157.03 NoteNote: A position indicating device may or may not incorporate or serve as a beam-limiting device.
DHS 157.03(263)(263) “Positive beam limitation” or “PBL” means the automatic or semi-automatic adjustment of an x-ray beam to the size of the selected image receptor, whereby exposures cannot be made without such adjustment. DHS 157.03(264)(264) “Positive pressure respirator” means a respirator in which the pressure inside the respiratory inlet covering exceeds the ambient air pressure outside the respirator. DHS 157.03(264m)(264m) “Positron emission tomography/computed tomography” or “PET/CT” means a dual modality imaging assembly comprised of two distinct components, one using radioactive material for imaging and the other using an x-ray source. DHS 157.03(264r)(264r) “Positron emission tomography radionuclide production facility” or “PET facility” means a facility operating a cyclotron or accelerator for the purpose of producing PET radionuclides within a consortium for noncommercial distribution among its associated members for medical use. DHS 157.03(265)(265) “Powered air-purifying respirator” or “PAPR” means an air-purifying respirator that uses a blower to force the ambient air through air-purifying elements to the inlet covering. DHS 157.03(266)(266) “Practical examination” means a demonstration through application of the safety rules and principles in industrial radiography including use of all procedures and equipment to be used by radiographic personnel. DHS 157.03(267)(267) “Preceptor” means an individual who provides, directs or verifies training and experience required for an individual to become an authorized user, an authorized medical physicist, an authorized nuclear pharmacist, a radiation safety officer for medical use, or an associate radiation safety officer. DHS 157.03(268)(268) “Prescribed dosage” means the specified activity or a range of activities of a drug containing radioactive material as documented by any of the following means: DHS 157.03(268)(b)(b) Under directions of the authorized user for procedures not requiring a written directive. DHS 157.03(269)(a)(a) For gamma stereotactic radiosurgery, the total dose as documented in the written directive. DHS 157.03(269)(b)(b) For teletherapy, the total dose and dose per fraction as documented in the written directive.