front 1 If a patient received 0.02 Gy during a 10-minute fluoroscopic examination, what was the dose rate? A 0.2 mGy/min B 2.0 mGy/min C 5 mGy/min D 200 mGy/min | back 1 B 2.0 mGy/min |
front 2 The annual dose limit for medical imaging personnel includes radiation from
A 1 only B 1 and 2 only C 2 and 3 only D 1, 2, and 3 | back 2 A 1 only |
front 3 Q 231.48:The most efficient type of male gonadal shielding for use during fluoroscopy is A flat contact B shaped contact (contour) C shadow D cylindrical | back 3 B shaped contact (contour) |
front 4 The x-ray unit of exposure defines which of the following? A Sievert B air kerma C Gyt D Becqueral | back 4 air kerma |
front 5 What is the minimum requirement for lead aprons, according to 21 CFR? A 0.05 mm Pb B 0.50 mm Pb C 0.25 mm Pb D 1.0 mm Pb | back 5 0.25 mm Pb |
front 6 If a patient received 0.02 Gy during a 10-minute fluoroscopic examination, what was the dose rate? A 0.2 mGy/min B 2.0 mGy/min C 5 mGy/min D 200 mGy/min | back 6 2.0 mGy/min |
front 7 What is the annual TEDE limit for radiation workers? A 5 mSv B 500 mSv C 5,000 mSv D 50 mSv | back 7 D 50 mSv |
front 8 Radiation output from a diagnostic x-ray tube is measured in which of the following units of measurement? A Gyt B Sv C Gya D Bq | back 8 Gya |
front 9 How much protection is provided from a 100-kVp x-ray beam when using a 0.50-mm lead-equivalent apron? A 40% B 75% C 88% D 99% | back 9 75% |
front 10 According to NCRP regulations, leakage radiation from the x-ray tube must not exceed A 10 mGya/hr B 1 mGya/hr C 10 mGya/min D 1 mGya/min | back 10 B 1 mGya/hr |
front 11 The measure of the rate at which energy is transferred from ionizing radiation to soft tissue is termed A the characteristic effect B Compton scatter C linear energy transfer D the photoelectric effect | back 11 C linear energy transfer |
front 12 If the exposure rate to an individual standing 7.0 feet from a source of radiation is 0.5 mGy/hr, what will be the dose received after 20 minutes at a distance of 3.0 feet from the source? A 0.07 mGy B 0.21 mGy C 0.90 mGy D 2.72 mGy | back 12 B 0.90 mGy |
front 13 With milliamperes (mA) increased to maintain fluoroscopic output intensity, how is the ESE affected as the source-to-skin distance (SSD) is increased? A The ESE increases. B The ESE decreases. C The ESE remains unchanged. D ESE is unrelated to SSD. | back 13 B The ESE decreases. |
front 14 What is the established annual occupational dose-equivalent limit for the lens of the eye? A 10 mSv B 50 mSv C 150 mSv D 250 mSv | back 14 150 |
front 15 What is the approximate entrance skin exposure (ESE) for the average AP pelvis radiograph? A 0.1 mGy B 1.5 mGy C 3.0 mGy D 4.0 mGy | back 15 1.5 |