25 notecards = 7 pages (4 cards per page)
Some consequences of ionization in human cells include:
1, 2, and 3
When natural sources of ionizing radiation become increased because of accidental or deliberate human actions such as mining, they are referred to as _____ sources.
Electromagnetic radiation can travel through space in the form of a wave but can interact with matter as a particle of energy. This dual nature is referred to as:
Which of the following statements concerning the 1979 nuclear reactor accident at TMI-2 is not true?
Excess cancer deaths have been predicted to occur in the 2 million people living within 50 miles of the plant at the time of the accident.
Which of the following is a special form of radiation that is capable of creating electrically charged particles by removing orbital electrons from the atom of the material with which it interacts?
Patients who have an understanding of the medical benefits of an imaging procedure because they received factual information about the study before having the examination are more likely to:
overcome any radiation phobia and be willing to assume a small risk of possible biologic damage
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
According to the U.S. Environmental Protection Agency (EPA), radon levels in homes should not exceed what level?
Cosmic radiation occurs in which two forms?
Solar and galactic
The U.S. Food and Drug Administration (FDA) presently considers the risk of radiation exposure to the U.S. population from color television monitors to be:
Through which of the following routes can radon enter houses?
1, 2, and 3
Acute melting of the uranium dioxide fuel of a nuclear reactor core requires how great a temperature?
Greater than 5000° F
When exposed to high radon levels in the home, which of the following groups of people have the highest risk of developing lung cancer?
As of 1987, of the estimated 0.65 mSv (65 rem) that manmade radiation contributed to the average annual radiation exposure of the U.S. population, what portion of this resulted from the use of consumer products?
0.11 mSv (11 mrem)
Which of the following helps shield the global population from exposure to essentially all high-energy, bombarding cosmic rays?
Earth’s atmosphere and magnetic field
Which of the following is considered by the EPA to be the second leading cause of lung cancer in the United States?
Which of the following are forms of electromagnetic radiation?
1, 2, and 3
The amount of energy transferred to electrons by ionizing radiation is the basis of the concept of:
In the electromagnetic spectrum, higher frequencies are associated with _____ wavelengths and _____ energies.
Both occupational and nonoccupational dose limits may be stated in units of:
A flight on a typical commercial airliner results in an equivalent dose rate of _____ mSv/hr (_____ mrem/hr).
0.005 to 0.01; 0.5 to 1
The first decay product of radium is:
The millisievert (mSv) is equal to _____ of 1 sievert.
The advantages of the BERT method are:
1, 2, and 3
If a patient asks a radiographer a question about the potential risk of radiation exposure associated with a specific x-ray procedure, the radiographer should:
use his or her intelligence and knowledge to answer the question honestly and provide a suitable example that compares the amount of radiation received from the procedure in question with natural background radiation received over a given period of time