ARRT SAFETY 2024-2025 LATEST EXAM
WITH 200 REAL EXAM QUESTIONS AND
100% CORRECT VERIFIED ANSWERS
ALREADY GRADED A(BRAND NEW!!)
The National Council on Radiation Protection and Measurements (NCRP) has recommended what total equivalent dose limit to the embryo/fetus?
0.5 mSv 5.0 mSv 50 mSv 500 mSv - ANSWER-5 mSv
Medical and dental x-rays are examples of - ANSWER-human-produced radiation
What is the approximate ESE for the average upright PA chest radiograph?
0.10 mGy 1.0 mGy 1.50 mGy 2.75 mGy - ANSWER- 0.10 mGy
If a quantity of radiation is delivered to a body in a single dose, its effect:
will be greater than if it were delivered in a number of doses over a long period of time.will be less than if it were delivered a number of doses over a long period of time.has no relation to how it is delivered in time. 1 / 4
is solely dependent on the radiation quality. - ANSWER-will be greater than if it
were delivered in a number of doses over a long period of time:
dependent on several factors: the amount of radiation received, the size of the
irradiated area, and how the radiation is delivered in time.
Which of these describes somatic effects of radiation? - ANSWER-They are caused when a large dose of high-LET radiation is received by a large area of the body
If the air kerma 4 feet from the x-ray table is 2 Gya, what is the dose at a distance of 8 feet? - ANSWER-0.5 Gya
What is the minimum source-to-skin distance for fixed fluoroscopes? - ANSWER- 15 inches
How much may female gonadal dose be reduced by using proper shielding? - ANSWER-up to 50%
What is the annual dose-equivalent limit for the skin and hands of an occupationally exposed individual?30 mSv 150 mSv 500 mSv 650 mSv - ANSWER-500 mSv
Which of the following is most likely to result in the greatest increase in patient exposure?Changing from 100 mA to 200 mA 2 / 4
Increasing kV 15% and cutting mAs in half Decreasing the kV 15% and doubling the mAs
Changing from nongrid technique to 8:1 grid technique - ANSWER-changing
from nongrid to 8:1 grid
Which of the following body parts is (are) included in whole-body dose?Gonads Blood-forming organs Extremities - ANSWER-all 3 - include all the especially radiosensitive organs. The gonads, the lens of the eye, and the blood-forming organs are particularly radiosensitive.
What describes oxygenated cell's radiosensitivity? - ANSWER-oxygen enhancement ratio
What are highly reactive ions with unpaired outer shell electrons called? - ANSWER-Free radicals
What is the most frequent cellular response to ionizing radiation? - ANSWER- Nothing
Where does most radiation-induced damage to cells occur? - ANSWER-.At doses of radiation much higher than that used in radiography
Radiation monitors that use lithium fluoride crystals to record dose are called - ANSWER-thermoluminescent dosimeters
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What is the best way to keep radiation dose to the patient low? - ANSWER-Avoid repeat exposures
According to NCRP Report #160, what is the annual effective dose equivalent per person from natural background radiation? - ANSWER-3.11 mSv
What is the single largest source of natural background radiation? - ANSWER- Radon
Attenuation may be defined as - ANSWER-changes in the x-ray beam as it travels through the patient
The unit of absorbed dose is the - ANSWER-gray
Which of the following is attributed to linear energy transfer? - ANSWER-It varies for different types of radiation
Which of the following effects describes the following: Increased dose equals
increased probability of effects? - ANSWER-Stochastic effects
What is the cumulative effective dose limit for a 31-year-old radiographer? - ANSWER-31 mSv
The unit of radioactivity is the - ANSWER-becquerel
Carpal tunnel syndrome shows impingement of what nerve? - ANSWER-Median
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