Why should the selection of technical exposure factors for all medical imaging procedures always follow ALARA?

Because radiation-induced cancer does not appear to have a fixed threshold, that is, a dose level below which a person would have no chance of developing this disease.

If a patient asks a radiographer a question about how much radiation he or she will receive from a specific x-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.

Typically, people are more willing to accept a risk if they perceive that the potential benefit to be obtained is

greater than the risk involved.

Regarding exposure to ionizing radiation, patients who are educated to understand the medical benefit of an imaging procedure are more likely to

suppress any radiation phobia and be willing to assume a small chance of possible biologic damage.

In the electromagnetic spectrum, higher frequencies are associated with

shorter wavelengths and higher energies.

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

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exam 2026

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Term	Definition
What unit is used to measure radiation exposure in the metric International System of Units?	Coulomb per kilogram
In a hospital setting, which of the following professionals is expressly charged by the hospital administration with being directly responsible for the execution, enforcement, and maintenance of the ALARA program?	Radiation Safety Officer
Why should the selection of technical exposure factors for all medical imaging procedures always follow ALARA?	Because radiation-induced cancer does not appear to have a fixed threshold, that is, a dose level below which a person would have no chance of developing this disease.
Which of the following provides the basis for determining whether an imaging procedure or practice is justified?	Diagnostic efficacy
X-rays are a form of which of the following kinds of radiation?	Ionizing
Which of the following is a method of explaining radiation to the public?	BERT
If a patient asks a radiographer a question about how much radiation he or she will receive from a specific x-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.
The millisievert (mSv) is equal to	1/1000 of a sievert.
Typically, people are more willing to accept a risk if they perceive that the potential benefit to be obtained is	greater than the risk involved.
Regarding exposure to ionizing radiation, patients who are educated to understand the medical benefit of an imaging procedure are more likely to	suppress any radiation phobia and be willing to assume a small chance of possible biologic damage.
Two cGy equals	.02 Gy.
What is the total average annual radiation equivalent dose for estimated levels of radiation exposure for humans?	5.5 mSv
A flight on a typical commercial airliner results in an equivalent dose rate of	0.005 to 0.01 mSv/hr.
The Environmental Protection Agency (EPA) recommends that action be taken to reduce elevated levels of radon in homes to a concentration less than	4 pCi/L of air.
In the electromagnetic spectrum, higher frequencies are associated with	shorter wavelengths and higher energies.
Cosmic radiation occurs in which two forms?	Solar and galactic
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
What is the most common unit of measure of equivalent dose?	Millisievert

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