Question 1.
Binding energy for Tungsten K shell
ANSWER
69.5 keV
Question 2.
Binding energy for Tungsten L shell
ANSWER
12.1 keV
Question 3.
Binding energy for Tungsten M shell
ANSWER
2.82 keV
Question 4.
Binding energy for Tungsten N shell
ANSWER
0.6 keV
Question 5.
Binding energy for Tungsten O shell
ANSWER
0.08 keV
Question 6.
Binding energy for Tungsten P shell
ANSWER
0.008 keV
Question 7.
Discrete emission spectrum
ANSWER
illustrates characteristic x-ray production, x axis is the x-ray energy and the y axis is the number of each type of x-ray photon
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, Question 8.
Characteristic photons
ANSWER
produced when outer-shell electrons fill inner-shell vacancies in atoms and are named for the shell being filled regardless of the shell involved representing
the energy variation depending on what shell is involved
Question 9.
Continuous emission spectrum
ANSWER
illustrates brems x-ray production, x axis is the energy, y axis is the number of photons, creates a bell shaped continuum
Question 10.
Primary beam
ANSWER
refers to the x-ray beam as it is upon exiting the collimator and exposing the patient
Question 11.
Remnant beam
ANSWER
refers to the x-ray beam that remains after interaction with the patient and is exiting the patient to expose the image receptor
Question 12.
transmitted photons
ANSWER
those exiting the patient without having interacted with anatomic structures
Question 13.
scattered photons
ANSWER
those that have lost energy and have been redirected after interacting with anatomic structures
Question 14.
Half value layer (HVL)
ANSWER
measurement for beam quality, defined as the thickness of absorbing material necessary to reduce the energy of the beam to one-half its original intensity
Question 15.
What is the normal HVL of diagnostic beams?
ANSWER
3-5 mm Al
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