FREE ARRT Radiation and Safety Questions and Answers

Question 1

What prevents the helpful x-ray beams from exposing people to unwanted radiation when imaging certain bodily parts?

Accepted Answer

Collimation

Answer

Sifting

Answer

Size of Cassette

Answer

Safeguarding Walls

Question 2

Which target interaction results from a cathode electron decelerating?

Accepted Answer

Bremsstrahlung

Answer

Coherent

Answer

Typical

Answer

Comppton

Question 3

Which radiation-induced biological consequences happen at random?

Accepted Answer

Stochastic

Answer

Teratogenesis

Answer

Decisive

Answer

Sudden radioactive illness

Question 4

What is the radiation dose equivalent unit of measurement?

Accepted Answer

Sievert (Sv)

Answer

Gray (Gy)

Answer

Coulombs (C/kg) per kilogram

Answer

Rad

Question 5

Which of the following will assist in lowering the patient's radiation exposure?

Accepted Answer

Making Use of AEC

Answer

Growing mAs

Answer

Making use of radiographic grids

Answer

Reduction in kVp

Question 6

At one meter's distance from the X-ray source, leakage radiation cannot be greater than _________.

Accepted Answer

100 mR/hr

Answer

20 R/min

Answer

300 mR/hr

Answer

170 mR/min

Question 7

REM is a unit of measurement for radiation. What is the meaning of REM?

Accepted Answer

Radiation Equivalent Man

Answer

Early Man Roentgen

Answer

Radiation-Evolved Control

Answer

Initial Radioactive Management

Question 8

What is the minimal lead content required for lead aprons, as per the NCRP (National Council on Radiation Protection and Measurements) guidelines?

Accepted Answer

0.50 mm Pb

Answer

0.85 mm Pb

Answer

0.35 mm Pb

Answer

0.40 mm Pb

Question 9

What proportion of the radiation that the general public is exposed to originates from medical and dental sources?

Accepted Answer

90%

Answer

3%

Answer

33%

Answer

10%

Question 10

What is the radioprotection principle that states that ionizing radiation should be administered to humans as little as possible, if at all, within the dose limits?

Accepted Answer

ALARA

Answer

FID

Answer

C/kg

Answer

DAP