FDI Exam 2 Review Questions With Correct Answers A+
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Module
FDI
Institution
FDI
FDI Exam 2 Review Questions With Correct
Answers A+
Total filtration is defined as _______ and ________ filtration. - Answeradded; inherent
Which of the following steps does NOT occur during the x-ray tube preparation? - AnswerX-
rays and heat are produced.
Electrons are "boiled" off what port...
FDI Exam 2 Review Questions With Correct
Answers A+
Total filtration is defined as _______ and ________ filtration. - Answer✔added; inherent
Which of the following steps does NOT occur during the x-ray tube preparation? - Answer✔X-
rays and heat are produced.
Electrons are "boiled" off what portion of the x-ray tube? - Answer✔filament
X-rays that are produced from any area other than the focal spot are known as ________
radiation. - Answer✔off-focus
Which primary exposure factor influences both the quantity and the quality of the x-ray beam? -
Answer✔kVp
Which process accounts for a majority of the x-ray production in diagnostic ranges? -
Answer✔Bremsstrahlung
Which of the following has the greatest effect on x-ray quantity? - Answer✔mAs
What term is used to describe the boiling off of electrons from the filament when current is
applied? - Answer✔thermionic emission
Which orbital electron shell has the strongest binding energy and is the most useful in x-ray
production? - Answer✔K
An x-ray generator that produces a 100% voltage ripple can be described as a ______________.
- Answer✔single phase
When filtration is added to an x-ray beam, the _______________ of the beam increases. -
Answer✔quality
Which type of x-ray production is dependent on the k-shell electron binding energy? -
Answer✔Characteristic
Which of the following steps does NOT occur during the x-ray exposure? - Answer✔The
rotating target begins to turn rapidly in an effort to reach top speed.
Electrons can only flow from the cathode to the anode in an x-ray tube. - Answer✔True
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A 15 degree Anode target angle will have a smaller effective focal spot than a 10 degree Anode
target angle. - Answer✔False
Which of the following processes does NOT occur when the diagnostic primary x-ray beam
interacts with anatomic tissues? - Answer✔spatial resolution
Radiographic images of objects are always magnified in size in terms of the true object size. -
Answer✔True
What has the greatest influence on the probability of a Compton interaction occurring? -
Answer✔The energy of the incoming photon.
Increasing mAs decreases radiographic (optical) density. - Answer✔False
Which interaction with matter removes an inner shell electron from an atom? -
Answer✔Photoelectric effect
Radiographic or image contrast is defined as - Answer✔the measurement of the difference in the
blackening of the radiographic film
Which interaction of matter is defined as a loss of energy of the incoming photon occurring when
it ejects an outer-shell electron from an atom? - Answer✔Compton effect
A film image with a few visible densities but great differences among them is known as -
Answer✔high contrast
Which interaction with matter is considered complete absorption of the incoming photon? -
Answer✔Photoelectric
The ability to remove or eject an electron from an atom is called - Answer✔ionization
What is the reduction in the intensity or number of photons in the primary x-ray beam called? -
Answer✔Beam attenuation
A radiograph that has a fogged, blurred or dull appearance has most likely been exposed to
which of the following? - Answer✔Compton radiation
What has the greatest influence of size distortion or magnification? - Answer✔object-to-image
distance (OID)
Scatter radiation that contributes to unwanted information on a radiograph is called -
Answer✔fog
Which of the following will result in decreased attenuation of the x-ray beam by the patient? -
Answer✔increased kVp
X-ray photon absorption is due to ______________ ________________, whereas x-ray photon
scatter is due to _______________ ______________. - Answer✔photoelectric effect; Compton
effect
For a fixed radiographic exposure, increasing part/object thickness decreases radiographic
density. - Answer✔True
When a higher kVp within the diagnostic range is used, the overall number of x-ray interactions
within matter decreases; however, the percentage of Compton interactions is likely to increase. -
Answer✔True
Radiographic density is defined as _______________. - Answer✔the measurement of the overall
blackening of the radiographic image
The reduction in the intensity or number of photons in the primary x-ray beam is known as -
Answer✔attenuation
What is the matrix of the computed image composed of? - Answer✔pixels
Digital imaging quality is improved with a smaller matrix size and includes a fewer number of
larger pixels. - Answer✔false
__________________ results when there are too few x-ray photons captured by the image
receptor (IR) to create a latent image. - Answer✔Quantum noise
The process of differential absorption for image formation is the same for digital and film-screen
imaging. - Answer✔true
What is the purpose of a picture archival and communication systems (PACS)? - Answer✔D.
All of the above.
A. To receive digital radiology images.
B. To store digital radiology images.
C. To display digital radiology images.
D. All of the above.
What serves the same purpose in conventional radiography as the imaging plate used in
computed radiography? - Answer✔Film/screen
A numeric value indicating the level of radiation exposure to the digital image receptor (IR) is
referred to as ___________________. - Answer✔exposure indicator
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