Midterm study guide Flashcards
X-rays are a form of which of the following kinds of radiation
ionizing
Radiology departments or individual radiologic technologists can “pledge” to image gently. The pledge includes which of the following?
1, 2, & 3.
- Make the image gently message a priority in staff communications each year
- Review the protocol recommend
The ALARA principle provides a method for comparing the amount of radiation used in various health care facilities in a particular area for a specific imaging procedures. This information may be helpful to many
regulatory agencies
If ionizing radiation from natural sources grows larger because of accidental or deliberate human actions such as mining radioactive elements, the sources are termed
enhanced natural sources
Which of the following forms of electromagnetic radiation?
- Microwaves
- Visible light
- x-rays
- gamma rays
- ultraviolet radiation
1,2,3,4,5 - all of them.
What is the most common unit of measure of equivalent dose?
Millisievert
The first decay product of radium is
radon?
The symbol Z indicates
atomic number of an atom
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
Which two interactions between x-radiation and matter may result in the production of small-angle scatter?
coherent scattering and Compton scattering
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 is essentially the sum total air kerma over the exposed area of the patient’s body surface?
dose area product
Which of the following devices contain an aluminum oxide detector?
optically stimulated luminescence dosimeter
