Principles of Radiographic Imaging
EXAM 1 Questions and Answers
Film-screen or digital are examples of:
a. x-ray room types
b. image receptors
c. x-ray beam characteristics
d. none of the above - ANS-image receptors
In producing a radiographic image, which of the following occurs last?
a. differential absorption
b. quality and quantity of x-ray beam is set at console
c. radiation interacts with image receptor
d. radiation exits the patient with different energies - ANS-radiation interacts with image
receptor
Differential absorption occurs because different tissues have varying amounts of:
a. photoelectric interactions
b. Compton scattering
c. coherent scattering
d. pair production - ANS-photoelectric interactions
Complete absorption of the diagnostic range x-ray photon is the interaction known as:
a. Compton scattering
b. photoelectric interaction
c. classical scattering
d. photodisintegration - ANS-photoelectric interaction
The ability to remove electrons from an atom is:
a. absorption
b. transmission
c. ionization
d. none of the above - ANS-ionization
The secondary photon that results from the photoelectric interaction:
,a. has the same energy as the incident photon
b. has high energy
c. has low energy
d. typically leaves the patient as scatter radiation - ANS-has low energy
The probability of a Compton interaction is __________ in bone than soft tissue:
a. less
b. the same
c. higher
d. none of the above - ANS-the same
Coherent scattering:
a. is a significant interaction during radiographic imaging
b. has minimal effect on the imaging process
c. never affects the diagnostic image
d. none of the above - ANS-has minimal effect on the imaging process
Transmission refers to:
a. all x-rays in the beam before entering the patient
b. x-rays leaving the patient that did not interact with atoms
c. all x-rays leaving the patient
d. the process of sending the x-ray beam through the patient - ANS-x-rays leaving the
patient that did not interact with atoms
Decreased attenuation results in:
a. more x-rays photons reaching the image receptor
b. fewer x-ray photons reaching the image receptor
c. no change in the number of photons reaching the image receptor
d. none of the above - ANS-more x-rays reaching the image receptor
Imaging a thicker part results in:
a. more x-rays photons reaching the image receptor
b. fewer x-ray photons reaching the image receptor
c. no change in the number of photons reaching the image receptor
d. none of the above - ANS-fewer x-ray photons reaching the image receptor
Tissues with higher atomic numbers appear _________ on a digital image.
a. darker
b. lighter
c. brighter
, d. less bright - ANS-brighter
Tissue that is more dense results in:
a. increased attenuation
b. decreased attenuation
c. no change in attenuation - ANS-increased attenuation
Imaging which of the following results in the most attenuation?
a. bone
b. air in lungs
c. fat
d. muscle - ANS-bone
A low-kilovoltage x-ray beam results in:
a. increased attenuation
b. decreased attenuation
c. no change in attenuation - ANS-increased attenuation
Scatter radiation that reaches the image receptor creates:
a. unwanted density
b. useful information
c. fog
d. A and C - ANS-Unwanted density & Fog
Less than _________ of the primary beam entering the part reaches the image
receptor.
a. 1%
b. 5%
c. 18%
d. 99% - ANS-5%
After processing, there is a _______ image.
a. visible
b. manifest
c. latent
d. A and B - ANS-visible & manifest
The computer is associated with:
a. film-screen imaging
EXAM 1 Questions and Answers
Film-screen or digital are examples of:
a. x-ray room types
b. image receptors
c. x-ray beam characteristics
d. none of the above - ANS-image receptors
In producing a radiographic image, which of the following occurs last?
a. differential absorption
b. quality and quantity of x-ray beam is set at console
c. radiation interacts with image receptor
d. radiation exits the patient with different energies - ANS-radiation interacts with image
receptor
Differential absorption occurs because different tissues have varying amounts of:
a. photoelectric interactions
b. Compton scattering
c. coherent scattering
d. pair production - ANS-photoelectric interactions
Complete absorption of the diagnostic range x-ray photon is the interaction known as:
a. Compton scattering
b. photoelectric interaction
c. classical scattering
d. photodisintegration - ANS-photoelectric interaction
The ability to remove electrons from an atom is:
a. absorption
b. transmission
c. ionization
d. none of the above - ANS-ionization
The secondary photon that results from the photoelectric interaction:
,a. has the same energy as the incident photon
b. has high energy
c. has low energy
d. typically leaves the patient as scatter radiation - ANS-has low energy
The probability of a Compton interaction is __________ in bone than soft tissue:
a. less
b. the same
c. higher
d. none of the above - ANS-the same
Coherent scattering:
a. is a significant interaction during radiographic imaging
b. has minimal effect on the imaging process
c. never affects the diagnostic image
d. none of the above - ANS-has minimal effect on the imaging process
Transmission refers to:
a. all x-rays in the beam before entering the patient
b. x-rays leaving the patient that did not interact with atoms
c. all x-rays leaving the patient
d. the process of sending the x-ray beam through the patient - ANS-x-rays leaving the
patient that did not interact with atoms
Decreased attenuation results in:
a. more x-rays photons reaching the image receptor
b. fewer x-ray photons reaching the image receptor
c. no change in the number of photons reaching the image receptor
d. none of the above - ANS-more x-rays reaching the image receptor
Imaging a thicker part results in:
a. more x-rays photons reaching the image receptor
b. fewer x-ray photons reaching the image receptor
c. no change in the number of photons reaching the image receptor
d. none of the above - ANS-fewer x-ray photons reaching the image receptor
Tissues with higher atomic numbers appear _________ on a digital image.
a. darker
b. lighter
c. brighter
, d. less bright - ANS-brighter
Tissue that is more dense results in:
a. increased attenuation
b. decreased attenuation
c. no change in attenuation - ANS-increased attenuation
Imaging which of the following results in the most attenuation?
a. bone
b. air in lungs
c. fat
d. muscle - ANS-bone
A low-kilovoltage x-ray beam results in:
a. increased attenuation
b. decreased attenuation
c. no change in attenuation - ANS-increased attenuation
Scatter radiation that reaches the image receptor creates:
a. unwanted density
b. useful information
c. fog
d. A and C - ANS-Unwanted density & Fog
Less than _________ of the primary beam entering the part reaches the image
receptor.
a. 1%
b. 5%
c. 18%
d. 99% - ANS-5%
After processing, there is a _______ image.
a. visible
b. manifest
c. latent
d. A and B - ANS-visible & manifest
The computer is associated with:
a. film-screen imaging
