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RAD201

Exam 1 review

QuestionAnswer
What unit is used to measure radiation exposure in the metric International System of Units? Coulomb per Kilogram
Which of the following is a form of radiation that is capable of creating electrically charged particles by removing orbital electrons from the atom of normal matter through which it passes? ionizing radiation
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
X-rays are a form of which of the following kinds of radiation? ionizing
Which of the following provides the basis for determining whether an imaging procedure or practice is justified? diagnostic efficacy
The term as low as reasonable achievable (ALARA) is synonymous with the term ORP (optimization for radiation protection)
The cardinal principles of radiation protection include which of the following? time, distance, shielding
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
Which of the following is a method of explaining radiation to the public? BERT
Which of the following radiation quantities is intended to be the best overall measure of the biologic effects of ionizing radiation? effective dose
The millisievert (mSv) is equal to 1/1000 of a sievert
The first decay product of radium is radon
Which of the following radiation quantities use the same unit of measure? effective dose and equivalent dose
What is the total average annual radiation equivalent dose for estimated levels of radiation exposure for humans? 5.5 msv
In the electromagnetic spectrum, higher frequencies are associated with shorter wavelengths and higher energies
What is the most common unit of measure of equivalent dose? millisievert
X-rays are carriers of human-made electromagnetic energy
Particles associated with electromagnetic radiation that have neither mass nor electric charge and travel at the speed of light are x-ray photons
Which of the following particles is considered to be a form of antimatter? positron
Which of the following interactions between x-ray photons with matter involve a matter–antimatter annihilation reaction? pair production
Compton scattering is synonymous with incoherent scattering
Although coherent scattering is most likely to occur ____________, some of this unmodified scattering occurs throughout the diagnostic range and can result in small amounts of radiographic fog. at less than 10 keV
The symbol Z indicates atomic number of an atom
What is the term for the number of x-rays emitted per inner-shell vacancy during the process of photoelectric absorption? fluorescent yield
Which of the following terms refers to the radiation that occurs when an electron spontaneously drops down from an outer shell of an ionized atom to fill a vacancy in an inner shell of that atom? characteristic photon, or characteristic x-ray
If two anatomic structures have the same density and atomic number but one is twice as thick as the other, the thicker structure will absorb twice as many x-ray photons
Which of the following is not a type of interaction between x-radiation and biologic matter? Bremsstrahlung
Which of the following results in all-directional scatter? compton interaction
What is the effective atomic number of compact bone? 13.8
Annihilation radiation is used in which of the following modalities? PET
Which of the following is not another term for coherent scattering? characteristic
Fluorescent radiation is also known as characteristic radiation
Created by: travis686
 

 



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