Final Review Flashcards
X-rays were discovered in 1895 in:
Germany
When fast-moving electrons collide with the target of an x-ray tube, the kinetic energy of their motion is converted into x-rays and:
Heat
The majority of radiography education programs are based in/on:
Colleges
Of the following types of electromagnetic energy, which has the shortest wavelength?
Gamma rays
Which of the following is not an accurate statement regarding the characteristics of x-rays?
A. They can penetrate matter that is impenetrable to light. B. They can be refracted by a lens.
C. They have an exposure effect on photographic emulsions.
D. They cannot be detected by the human senses.
B
The characteristic most often used to describe the energy of an x-ray beam is its:
Wavelength
An x-ray beam that has been attenuated by matter is called:
Remnant radiation
A device used to indicate the location of the radiation field and to control its size is called a:
collimator
An x-ray machine that permits viewing of the x-ray image in motion in real time is called a:
fluoroscope
The four prime factors of radiographic exposure are exposure time, milliamperage, kilovoltage, and:
SID
The prime factor that controls the wavelength of the x-ray beam is:
Kilovoltage
The prime factor that controls the rate at which x-rays are produced is:
mA
The mAs value of an exposure is varied to provide control of:
radiation intensity
The imaging system that provides an instantaneous digital image on a monitor is called:
Digital radiography
Which of the following factors is not affected by a change in the mA setting?
OID
Which of the following factors is used to control image contrast?
kVp
The inverse square law states that radiation intensity is inversely proportional to the square of the:
SID
A variation in the size or shape of the image in comparison to the object it represents is called:
Distortion
The only recognized professional society open to all radiologic technologists in the United States today is the:
ASRT
The day-to-day scheduling of staff in the radiography department is the responsibility of the:
Lead radiographer/manager
A pulmonologist who practices exclusively in a hospital intensive care unit may be referred to as:
an intensivist
The designated eligibility groups for Medicaid are recognized by the __________, although the _____________ regulates who falls within these eligibility groups.
federal government; state government
Which criterion does The Joint Commission (the accrediting agency for hospitals) not use to certify that a hospital meets certain minimum standards?
Education
A moral agent is one who:
is responsible for implementing an ethical decision