123 Quiz Question Flashcards
Why is a question concerning the amount of radiation a patient will receive during a spectic x-ray
procedure ditticult to answer?
1. Because the received dose is specified in a number of different units of measure.
2. Because the scientific units for radiation dose are normally not comprehensible by a patient.
3. Because the patient should not receive any information about radiation dose.
1 and 2
Electromagnetic radiation travels or propagates through space in the form of a wave but can interact with matter as a particle of energy called a photon. his dual nature is referred to as
wave-particle duality.
Compton scattering is synonymous witn
incoherent scattering.
Which of the following results in all-directional scatter?
Compton interaction
The cardinal principles of radiation protection include which of the following?
All the options
Cosmic radiation occurs in which two forms?
Solar and galactic
Which of the following is a method of explaining radiation to the public?
BERT
Which of the following is not a type of interaction between x-radiation and biologic matter?
Bremsstrahlung
X-rays are carriers of
human-made electromagnetic energy.
Terrestrial radiation includes which of the following sources?
Long-lived radioactive elements such as uranium-238, radium-226, and
thorium-232 that are present in variable quantities in the crust of the Earth
If a patient asks a radiographer a question about how much radiation he or she will receive from a specific -ray procedure, the radiographer can
respond by using an estimation based on the comparison of radiation received
from the x-ray to natural background radiation received.
Which of the following helps shield the global population from exposure to essentially all high-energy, bombarding cosmic rays?
Atmosphere and magnetic field of the Earth
What is the effective atomic number of compact bone?
13.8
X-rays are a form of which of the following kinds of radiation?
Ionizing
What unit is used to measure radiation exposure in the metric International System of Units?
Coulomb per kilogram
Particles associated with electromagnetic radiation that have neither mass nor electric charge and
travel at the speed of light are
X-ray photons.
The symbol Z indicates
atomic number of an atom.
The millisievert (mSv) is equal to
1/1000 of a sievert.
The first decay product of radium is
radon.
What is the total average annual radiation equivalent dose for estimated levels of radiation exposure
for humans?
5.5
In the electromagnetic spectrum, higher frequencies are associated with
shorter waveleneths and higher energies
Which of the following provides the basis for determining whether an imaging procedure or practice
is justified?
Diagnostic efficacy
Of the two sources of ionizing radiation listed below, which source remains fairly constant from vear
to year?
Natural
