Lmrt core review/LMRT
STATE EXAM with well set
questions and correct
answers.
1. restrict the XR beam to the clinical area of interest - ANSWER As a
professional radiographer, the practice of ALARA requires you to
2. prime - ANSWER The factors that affect XR emission under the direct control
of the radiographer are called_ factors
3. beam quality - ANSWER Milliamperage-second (mAs) directly affects all of
the following EXCEPT
4. mA & filtration - ANSWER The factors that directly affect XR quantity are
5. kVp & beam filtration - ANSWER The factors that directly affect XR quality
are
6. 6.3 x 10(18) - ANSWER If 1 coulomb is equal to 6.3 x 10(18) electron
charges, how many electrons flow from cathode to anode 1 second
6.3 x 10(15) - ANSWER If 1 ampere equals a flow of 6.3 x 10(18) electrons per
second, how many electrons flow from cathode to anode in 1 milliampere?
7. increase 2-fold - ANSWER As the mA doubles, the number of electrons
flowing from cathode to anode
8. XR beam quantity - ANSWER The product of tube current 7 exposure time is
equal to
9. change the mAs from 15-21 mAs - ANSWER In order to increase
radiographic film density by 40% the radiographer would
10. directly proportional - ANSWER The relationship between mAs & exposure is
11. the reciprocity law - ANSWER The reaction of a photographic film to light is
equal to the product of the intensity of the light and the duration of the light
exposure.
12. cause the electrons to travel faster from cathode to anode - ANSWER
Increasing the kVp for an exposure will
13. greater energy - ANSWER Increasing the energy of an incident electron will
result in the production of an XR photon with
,Lmrt core review/LMRT
STATE EXAM with well set
questions and correct
answers.
14. radiographic film density - ANSWER Kilovoltage is the primary controlling
factor of
15. contrast - ANSWER Adjustments in kVp should be used to control
radiographic
16. kVp - ANSWER XR beam penetrability is primarily controlled by
17. 400 mA, 200 ms, 40" SID - ANSWER All factor remaining constant, which of
the following set of exposure conditions would yield an image with
GREATEST radiographic film density
18. motion - ANSWER The length of the exposure time (S) for a radiograph, is
used to primarily control
19. 400 mA,0.110 sec, 80 kVp - ANSWER A radiograph is taken 400 mA, 55 ms,
95 kVp. A second image could be taken to improve contrast at
20. attenuation - ANSWER When an XR photon passes through matter, it
undergoes a process called
21. reduce in number - ANSWER During the process of attenuation, XR photons
in the beam
22. lead (Z=82) - ANSWER In which element are the inner-shell electrons more
tightly bound to the nucleus?
23. increase; decrease - ANSWER As the electron shells move farther from the
nucleus, total electron energies_ and binding energies_.
24. scatter - ANSWER When XR photons interacts w/matter & change direction,
the process is called
25. exists w/less energy - ANSWER If a photon interacts w/matte & scatter, the
photon
26. inner - ANSWER During photoelectric absorption, a/an_ shell electron is
ejected
, Lmrt core review/LMRT
STATE EXAM with well set
questions and correct
answers.
27. photoelectron - ANSWER During photoelectric absorption, the ejected
electron is called a/an
28. photon is released - ANSWER When an electron from an outer shell fills a
vacancy in an inner shell
29. a characteristic photon - ANSWER During the photoelectric interaction, as an
electron transfer from an outer shell to a vacant inner shell energy is released
in the form of
30. barium - ANSWER Secondary radiation energies are highest for which
element
31. loosely bound outer-shell - ANSWER Compton scattering occurs when an
incident XR photon interacts w/a_ electron
32. recoil electron - ANSWER The electron dislodged during Compton scattering
is called the
33. scattered photon - ANSWER The photon that exits the atom after a Compton
scattering is called the Compton
34. recoil electron & the scattered photon - ANSWER During Compton scattering,
the incident photon energy is divided between the
35. greater energy is imparted to the recoil electron - ANSWER As the angle of
deflection is increased from 0-180 degree
36. radiation fog - ANSWER Unwanted radiographic image densities caused
predominantly by scattered photons is called
37. annihilation reaction - ANSWER In which process is matter converted back to
energy?
38. photoelectric absorption - ANSWER Which of the following interactions has a
significant impact on the XR image?
39. Compton Scattering - ANSWER In the human body,_ is the predominant
interaction through most of the diagnostic XR range
STATE EXAM with well set
questions and correct
answers.
1. restrict the XR beam to the clinical area of interest - ANSWER As a
professional radiographer, the practice of ALARA requires you to
2. prime - ANSWER The factors that affect XR emission under the direct control
of the radiographer are called_ factors
3. beam quality - ANSWER Milliamperage-second (mAs) directly affects all of
the following EXCEPT
4. mA & filtration - ANSWER The factors that directly affect XR quantity are
5. kVp & beam filtration - ANSWER The factors that directly affect XR quality
are
6. 6.3 x 10(18) - ANSWER If 1 coulomb is equal to 6.3 x 10(18) electron
charges, how many electrons flow from cathode to anode 1 second
6.3 x 10(15) - ANSWER If 1 ampere equals a flow of 6.3 x 10(18) electrons per
second, how many electrons flow from cathode to anode in 1 milliampere?
7. increase 2-fold - ANSWER As the mA doubles, the number of electrons
flowing from cathode to anode
8. XR beam quantity - ANSWER The product of tube current 7 exposure time is
equal to
9. change the mAs from 15-21 mAs - ANSWER In order to increase
radiographic film density by 40% the radiographer would
10. directly proportional - ANSWER The relationship between mAs & exposure is
11. the reciprocity law - ANSWER The reaction of a photographic film to light is
equal to the product of the intensity of the light and the duration of the light
exposure.
12. cause the electrons to travel faster from cathode to anode - ANSWER
Increasing the kVp for an exposure will
13. greater energy - ANSWER Increasing the energy of an incident electron will
result in the production of an XR photon with
,Lmrt core review/LMRT
STATE EXAM with well set
questions and correct
answers.
14. radiographic film density - ANSWER Kilovoltage is the primary controlling
factor of
15. contrast - ANSWER Adjustments in kVp should be used to control
radiographic
16. kVp - ANSWER XR beam penetrability is primarily controlled by
17. 400 mA, 200 ms, 40" SID - ANSWER All factor remaining constant, which of
the following set of exposure conditions would yield an image with
GREATEST radiographic film density
18. motion - ANSWER The length of the exposure time (S) for a radiograph, is
used to primarily control
19. 400 mA,0.110 sec, 80 kVp - ANSWER A radiograph is taken 400 mA, 55 ms,
95 kVp. A second image could be taken to improve contrast at
20. attenuation - ANSWER When an XR photon passes through matter, it
undergoes a process called
21. reduce in number - ANSWER During the process of attenuation, XR photons
in the beam
22. lead (Z=82) - ANSWER In which element are the inner-shell electrons more
tightly bound to the nucleus?
23. increase; decrease - ANSWER As the electron shells move farther from the
nucleus, total electron energies_ and binding energies_.
24. scatter - ANSWER When XR photons interacts w/matter & change direction,
the process is called
25. exists w/less energy - ANSWER If a photon interacts w/matte & scatter, the
photon
26. inner - ANSWER During photoelectric absorption, a/an_ shell electron is
ejected
, Lmrt core review/LMRT
STATE EXAM with well set
questions and correct
answers.
27. photoelectron - ANSWER During photoelectric absorption, the ejected
electron is called a/an
28. photon is released - ANSWER When an electron from an outer shell fills a
vacancy in an inner shell
29. a characteristic photon - ANSWER During the photoelectric interaction, as an
electron transfer from an outer shell to a vacant inner shell energy is released
in the form of
30. barium - ANSWER Secondary radiation energies are highest for which
element
31. loosely bound outer-shell - ANSWER Compton scattering occurs when an
incident XR photon interacts w/a_ electron
32. recoil electron - ANSWER The electron dislodged during Compton scattering
is called the
33. scattered photon - ANSWER The photon that exits the atom after a Compton
scattering is called the Compton
34. recoil electron & the scattered photon - ANSWER During Compton scattering,
the incident photon energy is divided between the
35. greater energy is imparted to the recoil electron - ANSWER As the angle of
deflection is increased from 0-180 degree
36. radiation fog - ANSWER Unwanted radiographic image densities caused
predominantly by scattered photons is called
37. annihilation reaction - ANSWER In which process is matter converted back to
energy?
38. photoelectric absorption - ANSWER Which of the following interactions has a
significant impact on the XR image?
39. Compton Scattering - ANSWER In the human body,_ is the predominant
interaction through most of the diagnostic XR range
