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Terms in this set (51)A) Aluminum or copper 1. The metal filters contained in a film badge are generally composed of which of the following materials? A) Aluminum or copper D) 3 months What is the maximum period of time that a thermoluminescent dosimeter (TLD) may be worn as a personnel dosimeter? A) 1 hour C) These devices are all used for personnel monitoring What do film badges, optically stimulated luminescence (OSL) dosimeters, pocket ionization chambers, and thermoluminescent dosimeters (TLDs) have in common? A)
These devices are all used for area monitoring B) Ionization chamber-type survey meter Which of the following instruments is called a cutie pie? A) Geiger-Muller
detector C) Geiger-Muller detector Which of the following instruments has a check source of a weak, long-lived radioisotope located on one side of its external surface to verify its constancy each day? A) Pocket dosimeter B) Optically stimulated luminescence dosimeter Which of the following devices uses an aluminum oxide detector? A) Film badge B) Increased sensitivity In diagnostic imaging, the ______________ of the optically stimulated luminescence dosimeter makes it ideal for monitoring employees working in low-radiation environments and for pregnant workers. A) Decreased sensitivity C) Charged electrodes Which of the following items is not a basic component of the film badge dosimeter? A)
Radiographic film packet C) Pocket ionization chamber Which of the following personnel dosimeters resembles an ordinary fountain pen externally? A) Film badge
B) An audio amplifier and speaker Which component(s) of the Geiger-Muller detector alert(s) the operator to the presence of ionizing radiation? A) The shield covering the probe's sensitivity chamber A) They are all equally sensitive in the detection of ionizing radiation Which of the following is not true about area monitoring instruments? A) They are all equally sensitive in the detection of ionizing radiation D) 1% In keeping with the ALARA concept, most health care facilities issue personnel dosimetry devices when personnel might receive about ____________________ of the annual occupational EfD limit in any one month. A) 25% A) Assess compliance with ALARA guidelines The RSO in a health care facility receives and reviews personnel monitoring reports to: A) Assess compliance with ALARA guidelines B) Man-made sources (Medical imaging) What is the primary source of radiation exposure for most people in the United States? A) Natural radiation D) Coulombs per kilogram How is the SI unit for radiation exposure expressed? A) Watts C) No level of radiation exposure is safe What is the basis for the National Council on Radiation Protection's exposure recommendations? A) Risk
decreases as radiation dose increases B) To provide warning of excess radiation exposure What is the purpose of personnel monitoring? A) To protect against exposure B) On the front of the body at waist or collar level During routine radiographic procedures when a protective apron is not being worn, where should a personnel monitoring device be worn? A) On the back pocket below waist level D) All of the above What procedures produce a high risk of exposure for diagnostic imaging personnel? A) Fluoroscopy A) An estimate of true dose equivalent must be made What key action must be taken when a personnel monitoring device has been inadvertently exposed or lost? A)An estimate of true dose equivalent must be made D) All of the above What are G-M detectors used for? A) To detect radioactive particles or photons in nuclear medicine facilities C) Cutie pie Which of the following is an area monitoring instrument used to measure the exposure rates (mr/hr) at various distances for a patient who has received a radioactive material for therapeutic reasons? A) TLD D) Wilhelm Conrad Roentgen Who discovered x-rays? A) Marie Curie C) 1980 When were SI units adopted by the ICRU for use with ionizing radiation? A) 1895 C) Radiation from natural sources Which of the following is a source of radiation in the "public exposure" category? A) Workplace radiation A) Radon What is the greatest source of natural radiation? A) Radon C) Radiation beam size What is the critical element in surface integral exposure? A) Patient health A) The amount of energy per unit mass absorbed by the irradiated object What is the absorbed dose? A) The amount of energy per unit mass absorbed by the irradiated object A) Lead Which of the following absorbs the most radiation? A) Lead C) Absorbed dose times the quality factor What is the dose equivalent value? A) Absorbed dose times SI unit D) 1.5 mSv As determined by the NCRP, what is the average annual effective whole-body dose equivalent for exposed workers in the medical field? Objective 5 A) 15.0 mSv B) Whole-body radiation accumulated at a low rate over a long period What do film badge dosimeters measure? A) Radiation exposure to a specific part of the body from a single exposure event only D) Any of the above If a film badge reveals excessive radiation from scatter, what could be the reason? A) Poor work habits E) All of the above What is (are) the advantages(s) of a film badge? Objective 5 A) Inexpensive, easy to handle
B) Lithium fluoride in crystalline form What is the sensing material used in thermoluminescent dosimeter? A) Radiation-dosimetry film E) All of the above What is (are) the advantages(s) of a TLD? A) More sensitive and more accurate than
film badge dosimeter; can be reused C) Immediate exposure readout What is the primary advantage of pocket ionization chambers? A) Low cost C) Survey instruments detect the presence or absence of radiation What is the primary difference between radiation survey instruments and personnel dosimetry devices? A) Survey instruments cost less E) All of the above What is the "cutie pie" gas-filled radiation detector generally used for? A) To monitor diagnostic radiation when exposure times of 2 seconds or more are used sievert Which radiation units are used for: Dose equivalent? coulombs/kilogram (c/kg) Which radiation units are used for: Exposure? gray Which radiation units are used for: Absorbed dose (amount of energy(per unit mass) absorbed)? dose equivalent- sievert Which radiation units are used for: Uses a quality factor to adjust the adsorbed dose value for different types of radiation? 500mSv What is the equivalent dose limit for; occupational exposure to the skin, hands & feet? 50mSv What is the equivalent dose limit for; annual occupational effective dose limit? 150 mSv What is the equivalent dose limit for; lens of the eye? 10mSv x age in years Write the formula for calculating lifetime cumulative effective dose limit (CED) (CumEfD)? Contains 2 charged electrodes- when charged electrodes are exposed to radiation the air in the chamber causes the electrodes to discharge in direct proportion to the amount of radiation received. Identify the material used to absorb radiation or act as the detector in: Pocket ionization chamber Uses film that is similar to dental film Identify the material used to absorb radiation or act as the detector in: Film badge Lithium fluoride crystal (LiF) Identify the material used to absorb radiation or act as the detector in: Thermoluminescent dosimeter (TLD) Aluminum Oxide (AL2O3 ) Identify the material used to absorb radiation or act as the detector in: Optically stimulated luminescence (OSL) Sets with similar termsProtection unit 5120 terms mica718 Rad 10475 terms masonmykah Radiation Protection - Ch. 455 terms nikileblanc Chapter 4: Radiation Monitoring104 terms fiedler10 Sets found in the same folderUnit 2: Radiation Protection (Review)49 terms cwilliamstulsa Ch. 5 Rad Protection QUIZ49 terms hannah_humphrey653 Radiation Protection Unit 3 Review48 terms rmbeach Unit 1- Vocab23 terms jodelato Other sets by this creatorUnit 3- Vocab9 terms jodelato Unit 2- Grids19 terms jodelato Digital Unit 1 Review72 terms jodelato Quiz #1- Unit 211 terms jodelato Other Quizlet setsPsych 3310 Midterm174 terms renwguth BIO 201 Muscles of Head: Facial Expression27 terms tempepat Nervous System Final27 terms gkroll33202 part 2 test one phys62 terms lilian_snow Related questionsQUESTION What could cause apical areas to be missing? 15 answers QUESTION Which type of grid is most commonly used today? 14 answers QUESTION What is the approximate entrance skin exposure (ESE) for the average AP supine lumbar spine radiograph ? 15 answers QUESTION Where does the CR exit for a PA Mandible-viewing the body? 15 answers Which device contains a film packet that is used to detect and measure the radiation exposure of personnel?Film dosimeters are used to measure radiation exposure to workers to monitor radiation safety and ensuring that they receive doses below the appropriate limit. Film badges are the cheapest and most common monitoring device.
What is the device that must be worn to measure radiation exposure?What does the dosimeter do? A radiation dosimeter or badge does not provide protection but detects and measures radiation that you have been exposed to. The badge will detect high-energy beta, gamma or x-ray radiation.
What is measured in film dosimeter?A film badge dosimeter or film badge is a personal dosimeter used for monitoring cumulative radiation dose due to ionizing radiation.
What monitoring equipment is used for radiation safety?Geiger Mueller (GM) Detectors with Pancake Probes
Radiation energy detected by some devices is registered as a "count."
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