Diagnostic Imaging UPDATED ACTUAL
Exam Questions and CORRECT Answers
Which of the following is a physical property of x-rays?
a. Travel in straight lines
b. Refract and reflect similar to visible light
c. Are visible in the dark
d. May be deflected by magnets - CORRECT ANSWER - a. Travel in straight lines
As the wavelength of x-ray photons shortens, the energy of the x-ray beam will
a. Stay the same
b. Lengthen
c. Decrease
d. Increase - CORRECT ANSWER - d. Increase
The kVp setting on an x-ray machine controls the
a. Quality of the x-ray beam
b. Quantity of x-ray beams
c. Number of electrons emitted
d. Focal spot size - CORRECT ANSWER - a. Quality of the x-ray beam
The milliampere-seconds (mAs) setting on an x-ray machine controls the
a. Quality of the beam
b. Quantity of x-rays emitted
c. Speed of electrons emitted
d. Wavelength of the beam - CORRECT ANSWER - b. Quantity of x-rays emitted
During an exposure, electrons in the x-ray tube travel from the
,a. Anode to the cathode
b. Anode to the target
c. Cathode to the anode
d. Cathode to the filament - CORRECT ANSWER - c. Cathode to the anode
To produce x-rays, a great deal of energy in an x-ray tube is converted into heat. The ratio of heat
generated to x-ray production is generally considered to be
a. 1%:99%
b. 99%:1%
c. 50%:50%
d. 75%:25% - CORRECT ANSWER - b. 99%:1%
The acceleration of the electrons and their ultimate striking energy is determined by the
a. Milliamperage (mA)
b. Kilovoltage (kVp)
c. Milliamperage-seconds (mAs)
d. Exposure time (Time) - CORRECT ANSWER - b. Kilovoltage (kVp)
When depressing the "prep" switch on a rotating anode x-ray machine, you are effectively
a. Determining the acceleration of the electrons
b. Taking the exposure
c. Heating up the focal spot and spinning the rotating anode
d. Heating up the filament and spinning the rotating anode - CORRECT ANSWER - d.
Heating up the filament and spinning the rotating anode
Regarding the production of x-rays in the x-ray tube, the
a. Purpose of the anode is to provide a source of electrons
b. Target and focal spot are provided by the cathode
,c. Cathode side of the tube is positively charged, and the anode is negatively charged
d. Cathode includes the filament and the focusing cup - CORRECT ANSWER - d.
Cathode includes the filament and the focusing cup
What transformer in an x-ray machine controls the temperature of the filament?
a. Step-up transformer
b. Step-down transformer
c. Autotransformer
d. Self-rectifying transformer - CORRECT ANSWER - b. Step-down transformer
The heel effect is going to be more noticeable with
a. Larger film, longer focal-film distance, and higher kVp
b. Larger film, shorter focal-film distance, and lower kVp
c. Smaller film, shorter focal-film distance, and higher kVp
d. Smaller film, longer focal-film distance, and lower kVp - CORRECT ANSWER - b.
Larger film, shorter focal-film distance, and lower kVp
Full-wave rectification means that
a. The bottom half of alternating current is not used.
b. The machine performs its own rectification.
c. 60 pulses of x-rays are produced per second.
d. 120 pulses of x-rays are produced per second. - CORRECT ANSWER - d. 120 pulses of
x-rays are produced per second
What is the minimum distance in feet that a safelight in the darkroom should be away from the
work site?
a. 2
b. 3
c. 4
, d. 5 - CORRECT ANSWER - c. 4
If using both blue- and green-sensitive films, what type of safelight should you use?
a. Amber
b. Blue
c. Green
d. Red - CORRECT ANSWER - d. Red
The main purpose of the x-ray developer is to
a. Clear away the unexposed, undeveloped silver halide crystals
b. Convert the exposed silver halide crystals into black metallic silver
c. Reduce the unexposed silver halide crystals into black metallic silver
d. Swell and soften the emulsion - CORRECT ANSWER - b. Convert the exposed silver
halide crystals into black metallic silver
The main purpose of the x-ray fixer is to
a. Clear away the unexposed, undeveloped silver halide crystals
b. Convert the exposed silver halide crystals into black metallic silver
c. Reduce the unexposed silver halide crystals into black metallic silver
d. Swell and soften the emulsion - CORRECT ANSWER - a. Clear away the unexposed,
undeveloped silver halide crystals
A safelight illumination test was performed in the darkroom. On processing the film, you see
various gradations of blackness on your film. The area exposed for the longest period of time is
a. Green
b. Clear
c. Slightly gray
d. Darkest - CORRECT ANSWER - d. Darkest
Exam Questions and CORRECT Answers
Which of the following is a physical property of x-rays?
a. Travel in straight lines
b. Refract and reflect similar to visible light
c. Are visible in the dark
d. May be deflected by magnets - CORRECT ANSWER - a. Travel in straight lines
As the wavelength of x-ray photons shortens, the energy of the x-ray beam will
a. Stay the same
b. Lengthen
c. Decrease
d. Increase - CORRECT ANSWER - d. Increase
The kVp setting on an x-ray machine controls the
a. Quality of the x-ray beam
b. Quantity of x-ray beams
c. Number of electrons emitted
d. Focal spot size - CORRECT ANSWER - a. Quality of the x-ray beam
The milliampere-seconds (mAs) setting on an x-ray machine controls the
a. Quality of the beam
b. Quantity of x-rays emitted
c. Speed of electrons emitted
d. Wavelength of the beam - CORRECT ANSWER - b. Quantity of x-rays emitted
During an exposure, electrons in the x-ray tube travel from the
,a. Anode to the cathode
b. Anode to the target
c. Cathode to the anode
d. Cathode to the filament - CORRECT ANSWER - c. Cathode to the anode
To produce x-rays, a great deal of energy in an x-ray tube is converted into heat. The ratio of heat
generated to x-ray production is generally considered to be
a. 1%:99%
b. 99%:1%
c. 50%:50%
d. 75%:25% - CORRECT ANSWER - b. 99%:1%
The acceleration of the electrons and their ultimate striking energy is determined by the
a. Milliamperage (mA)
b. Kilovoltage (kVp)
c. Milliamperage-seconds (mAs)
d. Exposure time (Time) - CORRECT ANSWER - b. Kilovoltage (kVp)
When depressing the "prep" switch on a rotating anode x-ray machine, you are effectively
a. Determining the acceleration of the electrons
b. Taking the exposure
c. Heating up the focal spot and spinning the rotating anode
d. Heating up the filament and spinning the rotating anode - CORRECT ANSWER - d.
Heating up the filament and spinning the rotating anode
Regarding the production of x-rays in the x-ray tube, the
a. Purpose of the anode is to provide a source of electrons
b. Target and focal spot are provided by the cathode
,c. Cathode side of the tube is positively charged, and the anode is negatively charged
d. Cathode includes the filament and the focusing cup - CORRECT ANSWER - d.
Cathode includes the filament and the focusing cup
What transformer in an x-ray machine controls the temperature of the filament?
a. Step-up transformer
b. Step-down transformer
c. Autotransformer
d. Self-rectifying transformer - CORRECT ANSWER - b. Step-down transformer
The heel effect is going to be more noticeable with
a. Larger film, longer focal-film distance, and higher kVp
b. Larger film, shorter focal-film distance, and lower kVp
c. Smaller film, shorter focal-film distance, and higher kVp
d. Smaller film, longer focal-film distance, and lower kVp - CORRECT ANSWER - b.
Larger film, shorter focal-film distance, and lower kVp
Full-wave rectification means that
a. The bottom half of alternating current is not used.
b. The machine performs its own rectification.
c. 60 pulses of x-rays are produced per second.
d. 120 pulses of x-rays are produced per second. - CORRECT ANSWER - d. 120 pulses of
x-rays are produced per second
What is the minimum distance in feet that a safelight in the darkroom should be away from the
work site?
a. 2
b. 3
c. 4
, d. 5 - CORRECT ANSWER - c. 4
If using both blue- and green-sensitive films, what type of safelight should you use?
a. Amber
b. Blue
c. Green
d. Red - CORRECT ANSWER - d. Red
The main purpose of the x-ray developer is to
a. Clear away the unexposed, undeveloped silver halide crystals
b. Convert the exposed silver halide crystals into black metallic silver
c. Reduce the unexposed silver halide crystals into black metallic silver
d. Swell and soften the emulsion - CORRECT ANSWER - b. Convert the exposed silver
halide crystals into black metallic silver
The main purpose of the x-ray fixer is to
a. Clear away the unexposed, undeveloped silver halide crystals
b. Convert the exposed silver halide crystals into black metallic silver
c. Reduce the unexposed silver halide crystals into black metallic silver
d. Swell and soften the emulsion - CORRECT ANSWER - a. Clear away the unexposed,
undeveloped silver halide crystals
A safelight illumination test was performed in the darkroom. On processing the film, you see
various gradations of blackness on your film. The area exposed for the longest period of time is
a. Green
b. Clear
c. Slightly gray
d. Darkest - CORRECT ANSWER - d. Darkest
