Exam 1 Flashcards
X-rays are a form of non-ionizing radiation
(true or false)
false
The millisievert (mSv) is the SI sub-unit of EfD
(true or false)
true
The ability of x-rays to cause injury in normal biological tissue just became apparent recently
(true or false)
false
A threshold exists for radiation-induced malignant disease
(true or false)
false
The basic principles of time, distance, and shielding can be applied for the safety of both the patient and the radiographer
(true or false)
true
Manmade radiation is more dangerous than an equal amount of natural radiation
(true or false)
false
Diagnostic efficacy is not an important part of radiation protection in the healing arts
(true or false)
false
BERT ( Background Equivalent Radiation Time) is a:
- Method of optimizing radiation protection.
- Radiation unit.
- Radiation quantity.
- Method of comparison
Method of comparison
Typically, people are more likely to accept a risk if they perceive that:
- They have no other options.
- They have positive assurance that they will have a good outcome in terms of prognosis.
- The radiologic procedure will absolutely not cause pain or discomfort
- The potential benefit obtained is greater than the risk involved
The potential benefit obtained is greater than the risk involved
Which of the following terms is an attempt to provide a quantity that is a measure of general harm in humans?
- Absorbed dose
- Diagnostic efficacy
- Effective dose
- Exposure
Effective dose
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. This dual nature is referred to as:
wave-particle duality
Terrestrial radiation includes which of the following sources?
- Airport surveillance systems and electron microscopes
- 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
- The sun and beyond the solar system
- Radioactive fallout from nuclear weapons tests in which detonation occurred above ground
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
Cosmic radiation occurs in which two forms?
- Solar and manmade
- Artificial and galactic
- Natural background and artificial
- Solar and galactic
Solar and galactic
Through which of the following routes can radon enter houses?
- Crawl spaces under living areas
- Floor drains and sump pumps
- Porous cement block foundations
1, 2, and 3
When exposed to high radon levels in the home, which of the following groups of people have the highest risk of developing lung cancer?
- Adults from 20-30 years of age
- Nonsmokers
- Smokers
- Teenagers
Smokers
Which of the following helps shield the global population from exposure to essentially all high-energy, bombarding cosmic rays?
- Fog
- Smog
- Clouds
- Atmosphere and magnetic field of the Earth
Atmosphere and magnetic field of the Earth