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The annual effective dose limit for individual members of the general population not occupationally exposed is ___________ for continuous or frequent exposures from artificial sources other than medical irradiation and natural background and ____________ for infrequent annual exposure. 1 mSv (0.1 rem), 5 mSv (0.5 rem) 3 mSv (0.3 rem), 7 mSv (0.7 rem) 5 mSv (0.5 rem), 9 mSv (0.9 rem) 50 mSv (5 rem), 25 mSv (2.5 rem) 1 mSv (0.1 rem), 5 mSv (0.5 rem) 2 Which part(s) of a diagnostic x-ray unit should a radiographer avoid touching while a radiographic exposure is in progress? Control panel Exposure switch Kilovoltage control on the control panel Tube housing, collimator, and high-tension cables Tube housing, collimator, and high-tension cables 3 A spot film device protective curtain or sliding panel of a minimum thickness of 0.25-mm lead equivalent should normally be positioned between the fluoroscopist and the patient to intercept which of the following types of radiation? Primary radiation Scattered radiation above the tabletop Exit or image formation radiation Direct radiation Scattered radiation above the tabletop 4 Which of the following adjustments in technical exposure factors decreases the production of scattered radiation? Decrease kVp and increase mAs in compensation Decrease kVp and decrease mAs Increase kVp and decrease mAs in compensation Increase kVp and increase mAs Increase kVp and decrease mAs in compensation 5 Which of the following x-ray procedures increases the radiographer’s risk of exposure to ionizing radiation? 1 and 2 only 1 and 3 only 2 and 3 only 1, 2, and 3 6 While standing behind the control-booth barrier, a radiographer makes a radiographic exposure. The x-rays scattered from the patient’s body should ________ behind the control-booth barrier. not have enough energy remaining that will reach scatter only once before reaching any area scatter a minimum of two times before reaching any area scatter a minimum of ten times before reaching any area scatter a minimum of two times before reaching any area 7 When the time spent in a higher-radiation area is reduced or limited, occupational exposure: is also reduced is increased slightly remains the same is increased considerably 8 Which of the following is another term for use factor (U)? Workload factor Occupancy factor in controlled and uncontrolled areas Beam direction factor Protective barrier thickness consideration factor 9 In terms of occupational risk, radiography may be compared with the occupational risk associated with: extremely hazardous industries other industries considered reasonably safe, such as government or trade a nuclear war a radiation accident, such as the Chernobyl nuclear power plant disaster other industries considered reasonably safe, such as government or trade 10 ______ is the radiation output weighted time that the unit is actually delivering radiation during the week. Control designation Occupancy Use factor Workload 11 Secondary radiation includes _____
radiation. 1 and 2 only 1 and 3 only 2 and 3 only 1, 2, and 3 12 If the intensity of the x-ray beam is inversely proportional to the square of the distance from the source, how does the intensity of the x-ray beam change when the distance from the source of radiation and a measurement point is tripled? It increases by a factor of 3 at the new distance. It increases by a factor of 9 at the new distance. It decreases by a factor of 9 at the new distance. It decreases by a factor of 3 at the new distance. It decreases by a factor of 9 at the new distance. 13 Whenever scattered radiation decreases, the radiographer’s exposure: decreases increases slightly increases considerably remains the same 14 During which of the following x-ray examinations should a radiographer always wear a thyroid shield? Fluoroscopy and special procedures Routine mobile radiographic procedures General diagnostic radiographic procedures performed in an x-ray room Digital radiography procedures and computed radiography procedures Fluoroscopy and special procedures 15 What is the term for the proportional amount of time during which the x-ray beam is energized or directed toward a particular barrier? Occupancy factor Workload factor Distance factor Use factor 16 Diagnostic imaging personnel receive the highest occupational exposure during which of the following procedures? 1 only 2 only 3 only 1, 2, and 3 17 To ensure that the lifetime risk of occupationally exposed persons remains acceptable, the lifetime effective dose in mSv should not exceed _____ occupationally exposed person’s age in years. the 5 times 10 times 20 times 18 If the peak energy of the x-ray beam is 100 kVp, a protective lead apron must be the equivalent of which of the following measures? 0.25-mm thickness of lead 0.5-mm thickness of lead 1.0-mm thickness of lead 1.5-mm thickness of lead 0.25-mm thickness of lead 19 Protective eyeglasses with optically clear lenses should contain a minimal lead equivalent protection of _____ mm. 0.15 0.25 0.35 0.50 20 For C-arm devices with similar fields of view, the dose rate to personnel located within a meter of the patient is _______ fluoroscopy. comparable to that of routine far greater than the dose rate of routine significantly less than the dose rate of routine comparable to that of high-level-control comparable to that of routine 21 When a radiologic technologist declares her pregnancy to her employer, which of the following is appropriate? Her employer terminates her employment until after her child is born. She is able to continue her employment but is not permitted to perform any radiologic procedures during the remainder of her pregnancy. Her employer requires her to take a leave of absence until after the completion of the first trimester of the pregnancy and then return to her normal duties. She continues to perform her duties without interruption of employment, provided that she has received radiation safety counseling and follows established radiation safety practices. She continues to perform her duties without interruption of employment, provided that she has received radiation safety counseling and follows established radiation safety practices. 22 The maximum weekly permitted equivalent dose for a controlled area must not exceed _____ microsievert (_____ mrem). 1000; 100 100; 10 20; 2 2; 0.2 23 When doors to radiographic and fluoroscopic rooms are closed during radiation exposures, a substantial degree of protection is provided for persons in areas adjacent to the room door. This is because in most facilities room doors have attenuation for diagnostic energy x-ray equivalent to that provided by a _____ inch of lead. 1/2 1/4 1/16 1/32 24 Who should determine the exact shielding requirements for a particular imaging facility? Administrator of the facility Medical physicist Radiologist Radiographer 25
Because occupational exposure of the radiographer can be kept as low as reasonably achievable (ALARA) through individual monitoring and other protective measures and the use of protective devices and because exposure from radiation-related jobs will not alter the ____________, radiation workers may receive a larger equivalent dose than members of the general population. mean glandular dose genetically significant dose bone marrow dose tissue tolerance dose genetically significant dose What is the best way for radiologic technology to lower occupational radiation exposure?5 Ways To Minimize Your Occupational Radiation Exposure. Minimizing Occupational Exposure. ... . Time. ... . Notification by Radiation Equipment Operator. ... . Fluoroscopic Procedures. ... . Avoid Direct Beam Exposure. ... . Utilize Shielding. ... . Specific Shielding Applications. ... . Limiting Radiation Exposure.. What are the three basic methods to reduce occupational exposure?To do this, you can use three basic protective measures in radiation safety: time, distance, and shielding.
When a radiologic technologist declares her pregnancy to her employer which of the following is appropriate?Terms in this set (63) When a radiologic technologist declares her pregnancy to her employer, which of the following is appropriate? She continues to perform her duties without interruption of employment, provided that she has received radiation safety counseling and follows established radiation safety practices.
Who is responsible for providing the necessary resources and appropriate environment in which to execute an ALARA program?Individual in a hospital setting expressly charged by the administration to be directly responsible for the execution, enforcement, and maintenance of the ALARA program.
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