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DIAGNOSTIC IMAGING EXAM WITH {240} QUESTIONS AND VERIFIED ANSWERS
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DIAGNOSTIC IMAGING EXAM WITH {240}QUESTIONS AND VERIFIED ANSWERS
Which of the following describes a physical property of x-rays?
a. Travel in straight lines. b. Refract and reflect like visible light.
c. are visible in the dark.
d. Can be deflected by magnets. a. Travel in straight lines.
As X-ray photons' wavelengths shorten, the energy of the X-ray beam will
a. Stay the same.
b. lengthen
c. decrease
d. Increase - Answer d. increase
The kVp setting of an x-ray equipment controls the
a. Quality of the x-ray beam.
b. Number of x-ray rays.
c. Number of electrons released.
d. Focal spot size - ANSWER: a. X-ray beam quality.
The x-ray machine's milliampere-seconds (mAs) setting controls the
a. Quality of the beam.
,c. Amount of X-rays emitted
c. Speed of electron emission
d. The wavelength of the beam - ANSWER b. The number of X-rays emitted
During an exposure, electrons in the X-ray tube move from
a. Anode to cathode.
b. Anode towards the target
c. cathode to anode
d. Cathode to filament - Answer c. cathode to anode
An X-ray tube converts a large amount of energy into heat to produce X-rays. The
ratio of heat produced to X-ray generation is typically thought to equal
a. 1%:99%
b. 99%:1%
c. 50%:50%
c. 75%:25% – ANSWER b. 99%:1%
The electron's acceleration and eventual hitting energy are determined by the
a. Milliampere (mA).
b. Kilovolts (kVp)
c. Milliampere-seconds (mA)
d. Exposure duration (duration) - ANSWER b. Kilovoltage (kVp).
,Pressing the "prep" switch on a spinning anode x-ray machine, you are essentially
a. Calculating the acceleration of electrons
b. Accepting the exposure
c. Heating the focus point and spinning the rotating anode.
d. Heating the filament and spinning the rotating anode. d. Heat the filament and
spin the rotating anode.
The x-ray tube produces x-rays, which
a. The anode's purpose is to supply electrons.
b. The cathode provides a target and focus point.
c. The cathode side of the tube is positively charged, whereas the anode is
negatively charged.
d. Cathode comprises the filament and the focusing cup. - ANSWER d. Cathode
comprises the filament and the focusing cup.
In an x-ray machine, what transformer regulates the temperature of the filament?
a. Step-up transformer.
c. A step-down transformer.
C. Autotransformer
d. Self-rectifying transformer ANSWER: b. Step-down transformer.
The heel effect will be more pronounced with
a. Larger film, longer focal-film distance, and more kVp
, b. Larger film, shorter focal-film distance, and lower kVp.
c. Smaller film, shorter focal-film distance, and increased kVp
d. Smaller film, greater focal-film distance, and lower kVp - ANSWER b: Larger
film, shorter focal-film distance, and lower kVp.
Full-wave rectification indicates that
a. The lower half of the alternating current is not used.
b. The machine completes its own rectification.
Approximately 60 x-ray pulses are produced each second.
d. A total of 120 x-ray pulses are produced every second. - ANSWER d. 120 pulses
of x-rays are produced every second.
What is the minimum distance in feet that a safelight in the darkroom should be
from the work area?
a. 2
b. 3
c. 4
D. 5 - ANSWER C. 4
What type of safelight should you use if you have both blue- and green-sensitive
films?
a) Amber
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