LRA 211 QUIZ 2 QUESTIONS AND
ANSWERS
When it does interact with the image receptor, the Compton scatter photon contributes
no useful information because - ANSWER-it has changed direction
The fog seen on the radiographic image is the result of - ANSWER-Compton
interactions
The primary source of radiation exposure to the radiographer who is in the room during
an exposure is - ANSWER-from scatter from the patient
To minimize occupational exposure, the technologist should - ANSWER-wear protective
apparel (lead aprons, gloves, etc.) when in the room during imaging
Radiation interacting with air is more likely to be _____________, resulting in that area
of the image being darker. - ANSWER-transmitted
Photoelectric interactions - ANSWER-contribute significantly to patient dose
The energy of the characteristic x-ray photon depends on - ANSWER-1) the shell of the
electron that is dropping into the vacancy.
2) the energy level of the filament electron.
3) the binding energy of the inner-shell electron.
X-rays are produced by - ANSWER-characteristic and bremsstrahlung interactions
When filament electrons enter the anode target, they interact with. - ANSWER-outer
shell electrons of tungsten atoms
When a filament electron knocks out a K shell electron from the tungsten atom, it leads
to - ANSWER-a characteristic x-ray photon
A filament electron removes a K shell electron and an M shell electron fills the vacancy.
The K shell binding energy is 69.5 keV and the M shell binding energy is 2.8 keV. What
is the energy of the K-characteristic photon produced? - ANSWER-66.7 kev
Bremsstrahlung means - ANSWER-braking radiation
ANSWERS
When it does interact with the image receptor, the Compton scatter photon contributes
no useful information because - ANSWER-it has changed direction
The fog seen on the radiographic image is the result of - ANSWER-Compton
interactions
The primary source of radiation exposure to the radiographer who is in the room during
an exposure is - ANSWER-from scatter from the patient
To minimize occupational exposure, the technologist should - ANSWER-wear protective
apparel (lead aprons, gloves, etc.) when in the room during imaging
Radiation interacting with air is more likely to be _____________, resulting in that area
of the image being darker. - ANSWER-transmitted
Photoelectric interactions - ANSWER-contribute significantly to patient dose
The energy of the characteristic x-ray photon depends on - ANSWER-1) the shell of the
electron that is dropping into the vacancy.
2) the energy level of the filament electron.
3) the binding energy of the inner-shell electron.
X-rays are produced by - ANSWER-characteristic and bremsstrahlung interactions
When filament electrons enter the anode target, they interact with. - ANSWER-outer
shell electrons of tungsten atoms
When a filament electron knocks out a K shell electron from the tungsten atom, it leads
to - ANSWER-a characteristic x-ray photon
A filament electron removes a K shell electron and an M shell electron fills the vacancy.
The K shell binding energy is 69.5 keV and the M shell binding energy is 2.8 keV. What
is the energy of the K-characteristic photon produced? - ANSWER-66.7 kev
Bremsstrahlung means - ANSWER-braking radiation
