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X-ray Interaction
Test Description: Review of X-ray Interaction
Instructions: Answer all questions to get your test result.
1) What percentage of the incident beam contributes the final radiograph?
A
95%
B
50%
C
0.5%
D
10%
2) Modified scatter can also be referred to as:
A
Thompson scatter
B
Classical scatter
C
Photoelectric absorption
D
Compton scatter
3) WHich interaction ejects an outer shell electron?
A
Coherent scattering
B
Compton scattering
C
Photoelectric absorption
D
Pair Production
4) Which interaction increases the x-ray technologists dose?
A
Unmodified scattering
B
Photoelectric absorption
C
Coherent scattering
D
Modified scattering
5) The reduction in the number of photons after passing through a patient is:
A
Scattering
B
None of the answers is correct
C
Absorption
D
Attenuation
6) Which electrons has the lowest binding energy?
A
K shell
B
P shell
C
L shell
D
M shell
7) Which interaction can change the element of the atom?
A
Compton scattering
B
Photodisintegration
C
Pair production
D
Photoelectric absoprtion
8) How much energy is necessary for the photon to have to undergo pair production?
A
10 mev
B
10 Mev
C
1.02 mev
D
1.02 Mev
9) Which interaction is useful in PET imaging?
A
Pair production
B
Photodisintegration
C
Photoelectric absoprtion
D
Compton scattering
10) Which tissue has the highest atomic number?
A
Bone
B
Air
C
Soft tissue
D
Fat
11) Secondary x-ray can result from which interaction?
A
Pair production
B
Classical scatter
C
Compton scattering
D
Photoelectric absorption
12) Which interaction will cause the image to have radiation fog?
A
Photoelectric absorption
B
Classical scatter
C
Compton scatter
D
Pair Production
13) The white on a radiographic image is produced by:
A
Classical scatter
B
Modified scattering
C
Compton scatter
D
Photoelectric absorption
14) During classical scatter interaction, which of the following describe when all the electrons are excited?
A
Rayleigh
B
Coherent
C
Thomson
D
None of the answers is correct
15) If a photon possess 10 kev, which interaction will take place?
A
Photodisintegration
B
Pair Production
C
Photoelectric absoprtion
D
Coherent
16) What is it termed when looking at how tightly packed the atoms?
A
Photon energy
B
None of the answers is correct
C
Atomic number
D
Mass density
17) If 90% of the beam is attenuated, what does this mean?
A
Photons were absorbed
B
Photons deposited onto the image
C
Photons were absorbed and scattered
D
Photons were scattered
18) At the photon energy increases, what happens to the probability of a Compton interaction
A
Decreases
B
Increases
C
Decreases slightly but not enough to make a difference
D
Stays the same
19) If the incoming photon posseses close to the same amount of energy, what interaction is most likely to happen?
A
Compton scatter
B
Characteristic
C
Coherent scatter
D
Photoelectric absorption
20) Which interaction will dull the image?
A
Photoelectric absorption
B
Coherent scatter
C
Compton scatter
D
None of the answers is correct
*select an answer for all questions
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