HESI Safety V1 exam 2022/2023 with 100% correct answers

Which term describes the process by which most xray induced cellular damage occurs? A. Indirect effect B. Oxygen enhancement C. Direct effect D. Target Theory A In a typical xray examination room, what is considered a secondary protective barrier? A. Wall behind the chest board B. Floor C. Wall below the chest board D. Ceiling D Which term describes stray radiation that is emitted through the xray tube housing? A. Scatter B. Exit C. Off focus D. Leakage D For which long term effect is a 28 year old radiographer with a cumulative effective dpse of 100 mSv at an increased risk? A. Cataracts B. Cancer C. Sterility D. Fibrosis A If a radiographer receives an exposure of 0.05 mSv at a distance of 1.5 feet from the tube of a portable xray unit, what will the exposure be at a distance 6 feet from the tube? A. 0.0125 mSv B. 9 msv C. 16 msv D. 0.003 msv D If an xray tube which is the source of electrons used to make xrays? A. Filament B. Anode C. Focusing cup D. Target A What is the impact of using 2.5 mm of aluminum equivalent filtration on teh primary xray beam? A. Increase in the number fo xrays reaching the patient B. Noticeable reduction in density C. Noticeable increase in contrast D. Reduction of the patients skin dose D What is the most likely consequence for a cell when an xray photon interacts with and inactivates the cells master molecule? A. Disruption of cell chemistry only B. Lose of all intracellular fluid C. Cell membrane rupture D. Cell death D Which aspect of electrical power is responsible for accelerating electrons in an xray tube? A. Current flow B. Resistive heat C. Total wattage D. Potential difference D Which accurately describes the radiation dose absorbed by bone marrow? A. The dose can be accurately measured by using an OSL dosimeter B. The dose will be greater than the entrance skin exposure C. The dose will be less than the entrance skin exposure D. The dose can be accurately measured by a direct method C A Bremsstrahlung interaction is best by which statement? A. An electron is slowed and changes direction B. A photon is slowed and changes direction C. A photon strikes an inner shell electron D. An electron strikes an inner shell electron A Which grid ratio results in the lowest dose to a patient, because less mAs is required? A. 12:1 B. 8:1 C. 5:1 D. 16:1 C Which items can be used as indicators of the quality of the diagnostic xray beam? Select 2 A. SID B. kVp C. Exposure time D. OID E. Half value layer B E