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RADIATION SAFETY + REVIEW AND ESSENTIALS PROGRAM MOCK
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The amount of energy deposited in a unit mass in human tissue or other media is the definition of: A. Absorbed dose B. Biological dose C. Effective dose D. Dose Equivalent - answer- A. Absorbed dose After Tc99m is removed from a generator, it takes approximately ____ hours for the Tc99m activity to build to a maximum level. A. 6 B. 12 C. 18 D. 24 - answer- D. 24 A pressurized gas-filled ionization chamber for assaying activities in radiopharmaceutical vials and syringes is also known as a: A. Well counter B. Survey meter C. Dose calibrator D. Uptake probe - answer- C. Dose Calibrator
Which type of decay is neutron-rich? A. Beta decay B. Alpha decay C. Electron capture D. Gamma decay - answer- A. Beta decay A survey meter must be calibrated: A. Daily B. Weekly C. Quarterly D. Annually - answer- D. Annually Since positron decay and electron capture produces the exact same daughter product in the end, how can these two methods of decay be differentiated? A. Auger electron production B. Photoelectric effect occurs C. Characteristic x-ray production D. Gamma ray production - answer- C. Characteristic x-ray production If the exposure rate at 4 meters from a radioactive source is 5 mR/hr, what will the exposure rate be at 3 meters? A. 2.8 mR/hr B. 6.5 mR/hr
D. 4 - answer- C. 3 How long must survey records and calibrations be kept according to NRC 10 CFR 20.1501? A. 1 year B. 3 years C. 5 years D. Duration of license - answer- B. 3 years ALARA stands for: A. As Low As Reasonably Attenuated B. As Low As Reasonably Attained C. As Low As Reasonably Achievable D. As Low As Reasonably Accommodated - answer- C. As Low As Reasonably Achievable Which of the following postings is required for areas or rooms where radiation materials are used or stored? A. 'Caution, Radiation Area' B. 'Caution, High Radiation Area' C. 'Caution, Radioactive Materials' D. 'Caution, Danger' - answer- C. 'Caution, Radioactive Materials' Which of the following is described as controlled access area for the protection of individuals from exposure to radiation and radioactive materials?
A. Radiation area B. Unrestricted area C. High radiation area D. Restricted area - answer- D. Restricted area If the radiation intensity from an I-131 therapy patient at 1 meter is 70 mR/hr, at approximately what distance should a visitor stand to receive an exposure rate of no more than 2 mR/hr? A. 2. B. 5. C. 17. D. 35 - answer- B. 5. The dose rate during preparation of a radiopharmaceutical is 1.66 mrem/hr. With this rate reduced by 3 HVLs, how many hours would it take a worker to accumulate 10 mrems? A. 6 B. 12 C. 24 D. 48 - answer- D. 48 Air Kerma at the reference point (Ka, r) or (Ka,r, Gy) is ______. A. The time during a procedure that fluoroscopy is used. B. The patient dose associated with deterministic skin effects. C. The time during a procedure that fluoroscopy is used plus the cine acquisition imaging time.
A. Computed Tomography B. Digital Radiography C. Fluoroscopy D. Nuclear Medicine - answer- A. Computed Tomography When interviewing a 35 - year old female patient for a CT pelvis exam, she mentions not menstruating for two months. The healthcare professional should: A. Contact the referring physician or radiologist to order a blood test for pregnancy. B. Contact the sonography department to schedule a pelvic ultrasound. C. Continue with procedure, her missed period may be the reason for the exam. D. Continue with the exam but wrap the pelvis in lead. - answer- A. Contact the referring physician or radiologist to order a blood test for pregnancy. High dose rate (HDR) brachytherapy delivers doses of : A. 20 or greater rads per second B. 20 or greater rads per minute C. 20 or greater rads per hour D. 20 or greater rads per day - answer- B. 20 or greater rads per minute Low dose rate (LDR) brachytherapy delivers doses of: A. 4 - 200 rads per second B. 4 - 200 rads per minute C. 4 - 200 rads per hour
D. 4 - 200 rads per day - answer- C. 4 - 200 rads per hour The therapeutic method that employs fractions of radiation exposures each hour is: A. Low Dose Rate Brachytherapy B. M Dose Rate Brachytherapy C. H Dose Rate Brachytherapy D. Pulse Dose Rate Brachytherapy - answer- D. Pulse Dose Rate Brachytherapy Oral cavity cancers are typically treated with _____ type of brachytherapy. A. Low Dose Rate Brachytherapy B. M Dose Rate Brachytherapy C. H Dose Rate Brachytherapy D. Pulse Dose Rate Brachytherapy - answer- A. Low Dose Rate Brachytherapy All personnel, including patients, should be immediately removed from the MRI suite if _______ are detected. A. loud sounds are detected from the MR scanner B. sudden appearance of white clouds/ fog C. contrast spills D. Lenz's Forces - answer- B. Sudden appearance of white clouds/ fog All of the following items must be restricted from the MR scanner EXCEPT: A. Paper clips
A. Lead B. Plexiglass C. Aluminum D. Acrylic - answer- A. Lead The trefoil radioactive sign along with CAUTION (or DANGER) RADIOACTIVE MATERIALS' must be placed for all areas in which radioactive materials are stored or used in excess of _____ times the quantity specified in 10 CFR Part 20. A. 2 B. 5 C. 10 D. 15 - answer- C. 10 How often must licenses review the radiation protection program content and implementation? A. At least quarterly B. At least bi-annually C. At least semi-annually D. At least annually - answer- D. At least annually In the MRI suite, patient monitor leads should be: A. Removed without exception to ensure patient safety B. Looped and placed out of the field of view C. Connected to a MR safe monitor
D. Replaced with MR safe leads and connected to MR safe monitor. - answer- D. Replaced with MR safe leads and connected to MR safe monitor Medical equipment including patient walkers and wheelchairs may be dangerous in the MR suite because they: A. A may become projectiles and cause harm to predict or technologist B. May interfere with rapid patient assessment when necessary/. C. May interfere with the magnetic field. D. May quench the magnet - answer- A. may become projectiles and cause harm to patient and technologist. Sources approved for Manual brachytherapy include: A. Cobalt - 57 B. Iodine - 131 C. Palladium - 103 D. Yttrium - 90 - answer- C. Palladium - 103 The radionuclide approved for use as a sealed source in portable imaging devices is: A. Cobalt - B. Iodine - 125 C. Palladium - 103 D. Yttrium - 90 - answer- B. Iodine - 125 The survey regulations on the afterloading device employed in brachytherapy includes surveys of ____.
C. Lead equivalent-thickness of shielding, machine characteristics, and measurements of radiation behind and in front of the shielding materials. D. Machine characteristics and measurements of radiation behind shielding materials. - answer- B. Lead equivalent-thickness of shielding, machine characteristics and measurements of radiation behind shielding materials. The number of electrons released per unit of time by the cathode is: A. Directly proportional to the current passing through it. B. Inversely proportional to the current passing through it by a factor of 2. C. Inversely proportional to the current passing through it. D. Proportional to the current passing through it by factor of 2. - answer- A. Directly proportional to the current passing through it. Identify the correct statement regarding the presence of grids in x-ray systems? A. Grids increase contrast thus, degrading imaging quality and increasing the dose to the patient and staff by factor of two. B. Grids decrease contrast, increase image quality and decrease the dose to the patient and the staff by factor of two or more. C. Grids increase contrast thus increasing image quality and increasing the dose to the patient and staff by a factor of two or more. D. Grids do not effect image quality; however, they increase the dose to the patient and staff. - answer- C. Grids increase contrast thus increasing image quality and increasing the dose to the patient and staff by a factor of two or more. Shutters that limit the geometric extent of the X-ray field are present in all X-ray equipment. In fluoroscopy, the collimation is generally: A. Circular or orthogonal in shape, matching the shape of the image.
B. Orthogonal or triangular in shape, matching the shape of the image. C. Circular or triangular in shape, matching the shape of the image. D. Circular or rectangular in shape, matching the shape of the image receptor. - answer- D. Circular or rectangular in shape, matching the shape of the image receptor. Last image hold in fluoroscopy is a dose-saving technique associated with which type of collimation? A. Geometric only B. Geometric and Electronic C. Electronic only D. Magnetic - answer- C. Electronic only The thickness of an absorber required to attenuate 50% of the incident radiation beam intensity defines: A. Shielding B. Transmission factor C. Half value layer D. Time-distance-shielding - answer- C. Half value layer Which of the following regulations describes posting of notices to workers and general safety instructions? A. 10 CFR Part 19 B. 10 CFR Part 20 C. 10 CFR Part 25 D. 10 CFR Part 35 - answer- A. 10 CFR Part 19
B. threshold dose C. dosimetry value D. W value - answer- B. threshold dose NRC Licensing Regulations applicable to the type of license under which most medical facilities operate may be found in 10CFR Part: A. 30 B. 31 C. 32 D. 33 - answer- D. 33 Annual radiation exposure in rems per year for a member of the general public is: A. 0. B. 0. C. 5 D. 10 - answer- A. 0. Microsphere Therapy currently employs _____ radionuclide implantation therapy. A. Cesium - 137 B. Cobalt - 60 C. Iodine - 125 D. Yttrium - 90 - answer- D. Yttrium - 90 The written directive for a Microsphere Therapy procedure must include:
A. Authorized user listing B. Manufacturer C. Radiation surveys D. Size of microspheres - answer- B. Manufacturer During a resection procedure, which instrument is most often employed to locate radioactive seeds? A. Cutie Pie B. Geiger Counter C. Ionization chamber D. Surgical probe - answer- D. Surgical probe Sodium Iodide probe for radioactive seed localization is used for surveys because the probe's ability to detect: A. High alpha B. Low beta C. High characteristic D. Low gamma - answer- D. Low gamma To comply with NRC regulations, records of all the following types of radioactive waste disposal must be retained indefinitely EXCEPT: A. Transfer to burial B. Incineration
If the radiation intensity of a point source at 0.5 m measures 36mR/hr, at what distance will the intensity be halved? A. 0.5 m B. 0.7 m C. 1.0 m D. 2.2 m - answer- B. 0.7 m What federal agency is in charge of by-product material? A. OSHA B. NRC C. FAA D. EPA - answer- B. NRC ______ must be followed, while ______ are suggestions for compliance. A. Regulations/ regulatory guides B. Regulatory guides/ regulations C. Instructions/ regulations D. Regulations/ policies and procedures - answer- A. Regulations/ regulatory guides Which of the following metals is not routinely used as a filter in personnel dosimeter? A. Zinc B. Copper C. Aluminum
D. Lead - answer- The information regarding the Mo99/Tc99m ratio may be found in 10CFR Part: A. 30 B. 31 C. 32 D. 33 - answer- A. 30 The first person a technologist should report a lost film badge to is the: A. nuclear medicine physician B. radiology director C. RSO D. NRC - answer- C. RSO Radiation Biology is BEST defined as the study of: A. the nature of ionizing radiation B. the radiation effects on ecology C. ionizing radiation effects on living systems D. properties of ionizing radiation - answer- C. ionizing radiation effects on living systems The current annual limit to the extremities of a radiation worker is: A. 5 rem
