TEST BANK For Radiologic Science for Technologists, 12th Edition by Stewart C Bushong, Verified Chapters 1 - 40, Complete Newest Version.pdf

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TEST BANK For Radiologic Science for Technologists
12th Edition by Stewart C Bushong
Chapters 1 - 40, Complete

TABLE OF CONTENTS
1. Essential Concepts of Radiologic Science
2. Basic Physics Primer
3. The Structure of Matter
4. Electromagnetic Energy
5. Electricity, Magnetism, and Electromagnetism
6. The X-Ray Imaging System
7. The X-Ray Tube
8. X-Ray Production
9. X-Ray Emission
10. X-Ray Interaction with Matter
11. Imaging Science
12. Computed Radiography
13. Digital Radiography
14. Digital Radiographic Technique
15. Image Acquisition
16. Patient-Image Optimization
17. Viewing the Medical Image
18. Picture Archiving and Communication System
19. Image Perception
20. Digital Display Device
21. Medical Image Descriptors
22. Scatter Radiation
23. Radiographic Artifacts
24. Mammography
25. Fluoroscopy
26. Interventional Radiology
27. Computed Tomography
28. Tomosynthesis
29. Human Biology
30. Fundamental Principles of Radiobiology
31. Molecular Radiobiology
32. Cellular Radiobiology
33. Deterministic Effects of Radiation
34. Stochastic Effects of Radiation
35. Health Physics
36. Designing for Radiation Protection
37. Radiography/Fluoroscopy Patient Radiation Dose
38. Computed Tomography Patient Radiation Dose
39. Patient Radiation Dose Management
40. Occupational Radiation Dose Management

ANS
Chapter 01: Essential Concepts of Radiologic Science
Bushong: Radiologic Science for Technologists, 12th Edition
MULTIPLE CHOICE
1. Matter is measured in .
a. kilograms
b. joules
c. electron volts
d. rems
ANS A
Matter is measured in kilograms.
2. Atoms and molecules are the fundamental building blocks of .
a. energy
b. radiation
c. matter
d. gravity
C
Atoms and molecules are the fundamental building blocks of matter.
3. Ice and steam are examples of two forms of .
a. matter
b. radiation
c. energy
d. work
ANS: A
Ice and steam are examples of two forms of matter.
4. The formula E = mc2
is the basis for the theory that led to the development of .
a. x-rays
b. electromagnetic radiation
c. nuclear power
d. cathode ray tubes
ANS: C
The formula E = mc2
is the basis for the theory that led to the development of nuclear power.
5. Radio waves, light, and x-rays are all examples of energy.
a. nuclear
b. thermal
c. electrical
d. electromagnetic
ANS: D
Electromagnetic energy includes radio waves, light, and x-rays as well as other parts of the
spectrum.

6. A moving object has energy.
a. potential
b. kinetic
c. nuclear
d. electromagnetic
ANS: B
A moving object has kinetic energy.
7. What is the removal of an electron from an atom called?
a. Ionization
b. Pair production
c. Irradiation
d. Electricity
ANS: A
The removal of an electron from an atom is called ionization.
8. Ionizing radiation is capable of removing from atoms as it passes through the
matter.
a. neutrons
b. protons
c. electrons
d. ions
ANS: C
Ionizing radiation is capable of removing electrons from atoms as it passes through the matter.
9. The energy of x-rays is _ .
a. thermal
b. potential
c. kinetic
d. electromagnetic
ANS: D
X-rays are a form of electromagnetic energy.
10. The biggest source of man-made ionizing radiation exposure to the public is
.
a. atomic fallout
b. diagnostic x-rays
c. smoke detectors
d. nuclear power plants
ANS: B
Medical x-ray exposure is the biggest source of man-made radiation.
11. In the United States, we are exposed to _ mSv/year of ionizing radiation from the
natural environment.
a. 0 to 5
b. 5 to 20
c. 20 to 90

d. 100 to 300
ANS: A
We are exposed to about 3 mSv/yr of ionizing radiation from natural environmental sources in
the United States.
12. Today, radiology is considered to be a(n) occupation.
a. safe
b. unsafe
c. dangerous
d. high-risk
ANS: A
Today, radiology is considered to be a safe occupation because of effective radiation protection
practices.
13. is a special quantity of radiologic science.
a. Mass
b. Velocity
c. Radioactivity
d. Momentum
ANS: C
Radioactivity is a special quantity of radiologic science.
14. What does ALARA mean?
a. All Level Alert Radiation Accident
b. As Low As Reasonably Achievable
c. Always Leave A Restricted Area
d. As Low As Regulations Allow
ANS: B
ALARA means As Low As Reasonably Achievable.
15. Computed tomography was developed in the .
a. 1890s
b. 1920s
c. 1970s
d. 1990s
ANS: C
Computed tomography was developed in the 1970s.
16. Filtration is used to .
a. absorb low-energy x-rays
b. remove high-energy x-rays
c. restrict the useful beam to the body part imaged
d. fabricate gonadal shields
ANS: A
Filtration is used to absorb low-energy x-rays.

TRUE/FALSE
1. Mass is the quantity of matter as described by its energy equivalence.
ANS: T
Mass is the quantity of matter as described by its energy equivalence.
2. Radiation is the removal of an electron from an atom.
ANS: F
Ionization is the removal of an electron from an atom.
3. Radiology emerged as a medical specialty because of the Snook transformer and the Crookes x-
ray tube.
ANS: F
Radiology emerged as a medical specialty because of the Snook transformer and the Coolidge x-
ray tube.
Chapter 02: Basic Physics Primer
MULTIPLE CHOICE
1. The basic quantities measured in mechanics are _ , , and .
a. volume; length; meters
b. mass; length; time
c. radioactivity; dose; exposure
d. meters; kilos; seconds
ANS: B
The basic quantities measured in mechanics are mass, length, and time.
2. An example of a derived quantity in mechanical physics is a .
a. meter
b. second
c. dose
d. volume
ANS: D
Volume is a derived unit.
3. Exposure is measured in units of .
a. becquerel
b. sieverts
c. meters
d. grays
ANS: D

Exposure is measured in units of grays.
4. What is the decimal equivalent of the proper fraction 4/1000?
a. 0004
b. 004
c. 04
d. 4
ANS: B
The decimal equivalent of the proper fraction 4/1000 is .004.
5. What is the decimal equivalent of the improper fraction 289/74?
a. 390
b. 3.90
c. 39.0
d. 390.0
ANS: B
The decimal equivalent of the improper fraction 289/74 is 3.90.
6. The first step to expressing a number in scientific notation is to .
a. round up to the nearest 1000
b. round down to the nearest 1000
c. write the number in decimal form
d. write the number as a fraction
ANS: C
The first step to expressing a number in scientific notation is to write the number in decimal
form.
7. What is 6080 in exponential form?
a. 6080.0 104
b. 608.0 104
c. 6.080 103
d. 6080 103
ANS: C
The number 6080 in exponential form is 6.080 103
8. Graphs are typically based on two axes; a and a .
a. y-axis; z-axis
b. oblique; horizontal
c. x-axis; y-axis
d. vertical; oblique
ANS: C
Most graphs are based on two axes: a horizontal or x-axis and a vertical or y-axis.
9. In radiologic science, all of the following are special quantities, except:
a. exposure.
b. distance.
c. dose.

d. effective dose.
ANS: B
In radiologic science, special quantities are those of exposure, dose, effective dose, and
radioactivity.
10. The SI unit of velocity is .
a. meters per second
b. miles per hour
c. meters per millisecond
d. kilometers per second
ANS: C
Units of velocity in SI are meters per second (m/s).
11. Mass density should be reported in which units?
a. Coulomb/kilogram
b. Newtons per square meter
c. Kilograms per cubic meter
d. Kilograms per square meter
ANS: C
Mass density should be reported with units of kilograms per cubic meter (kg/m3
).
12. An object at rest will if no outside forces are applied.
a. stay at rest
b. decrease mass
c. increase velocity
d. decrease velocity
ANS: A
An object at rest will stay at rest if no outside forces are applied.
13. Which of the following explains the difference between speed and velocity?
a. One has motion, and the other does not.
b. One involves acceleration, and the other does not.
c. One involves time, and the other does not.
d. One has direction, and the other does not.
ANS: B
Velocity includes acceleration and speed does not. Speed is the rate at which an object covers
distance.
14. For every action, there is an equal and opposite reaction, this describes which Newton’s law?
a. Newton’s first law of motion
b. Newton’s second law of motion
c. Newton’s third law of motion
d. Newton’s law of inertia
ANS: C
Newton's third law of motion states that for every action, there is an equal and opposite reaction.

15. Work is the product of and distance.
a. force
b. gravity
c. acceleration
d. motion
ANS: A
Work is the product of force and distance.
16. The transfer of heat by the emission of infrared radiation is .
a. electric radiation
b. magnetic energy
c. mechanical energy
d. thermal radiation
ANS: D
Thermal radiation is the transfer of heat by the emission of infrared radiation.
17. What heat transfer takes place when you burn your finger by touching a hot iron?
a. Conduction
b. Convection
c. Radiation
d. Electromagnetic
ANS: A
Conduction is the transfer of heat through a material or by touching.
18. What heat transfer takes place when water is boiled?
a. Conduction
b. Convection
c. Radiation
d. Electromagnetic
ANS: B
Convection is the mechanical transfer of ―hot‖ molecules in a gas or liquid from one place to
another.
19. What are the two cryogens used in Magnetic resonance imaging with a superconducting
magnet?
a. Gaseous helium and gaseous nitrogen
b. Liquid helium and gaseous nitrogen
c. Gaseous helium and liquid helium
d. Liquid helium and liquid nitrogen
ANS: D
Liquid nitrogen and liquid helium are the two cryogens that are used in magnetic resonance
imaging with a superconducting magnet.
20. When you stretch a rubber band, you are storing _ energy.
a. kinetic
b. potential
c. thermal

d. radiant
ANS: B
Potential energy is the stored energy of position or configuration.
Chapter 03: The Structure of Matter
MULTIPLE CHOICE
1. The term ―atom‖ was first used bythe .
a. Ethiopians
b. British
c. Greeks
d. Romans
ANS: C
The term ―atom‖ was first used bythe Greeks.
2. The first person to describe an element as being composed of identical atoms was
.
a. J. J. Thomson
b. John Dalton
c. Dmitri Mendeleev
d. Niels Bohr
ANS: B
The first person to describe an element as being composed of identical atoms was John Dalton.
3. The smallest particle that has all the properties of an element is a(n) .
a. neutron
b. proton
c. electron
d. atom
ANS: D
The smallest particle that has all the properties of an element is an atom.
4. The periodic table of the elements was developed by in the late 19th century.
a. Bohr
b. Rutherford
c. Mendeleev
d. Roentgen
ANS: C
The Periodic Table was developed by Mendeleev.
5. Rutherford’s experiments in 1911 showed that the atom was composed of
.
a. electrons with well-defined orbits
b. a nucleus with an electron cloud

c. electrified plum pudding
d. a ball of hooks and eyes
ANS: C
Rutherford’s experiments in 1911 showed that the atom was composed of a nucleus with an
electron cloud.
6. A positively charged nucleus surrounded by negatively charged electrons in well-defined
orbits is the model of the atom.
a. Bohr
b. Thomson
c. Rutherford
d. Dalton
ANS: A
A positively charged nucleus surrounded by negatively charged electrons in well-defined orbits
is the Bohr model of the atom.
7. What are the fundamental particles of an atom?
a. Quark, positron, negatron
b. Nucleon, electron, proton
c. Proton, neutron, quark
d. Proton, electron, neutron
ANS: D
The fundamental particles of an atom are the proton, electron, and neutron.
8. The chemical element is determined by the number of in the atom.
a. protons
b. electrons
c. neutrons
d. nucleons
ANS: A
The chemical element is determined by the number of protons in the atom.
9. An atom in a normal state has an electrical charge of .
a. one
b. zero
c. positive
d. negative
ANS: B
An atom in a normal state has an electrical charge of zero.
10. The binding energies, or energy levels, of electrons are represented by their .
a. atomic numbers
b. atomic mass units
c. shells
d. isotopes
ANS: C

The binding energies, or energy levels, of electrons are represented by their shells.
11. When an atom has the same number of protons as another, but a different number of neutrons,
it is called an .
a. isomer
b. isobar
c. isotone
d. isotope
ANS: D
When an atom has the same number of protons as another, but a different number of neutrons,
it is called an isotope.
12. When atoms of various elements combine, they form .
a. isotopes
b. compounds
c. molecules
d. ions
ANS: C
When atoms of various elements combine, they form molecules.
13. An atom that loses or gains one or more electrons is a(n) .
a. ion
b. molecule
c. isotope
d. isomer
ANS: A
An atom that loses or gains one or more electrons is an ion.
14. The maximum number of electrons that can exist in an electron shell is calculated with the
formula .
a. 2n
b. 2n2
c. 2/n
d. 2/n2
ANS: B
The number of electrons in an electron shell is calculated with the formula 2n2
.
15. A neutral atom has the same number of _ and electrons.
a. quarks
b. neutrinos
c. neutrons
d. protons
ANS: D
A neutral atom has the same number of protons and electrons.
16. The innermost electron shell is symbolized by the letter .
a. J

b. K
c. L
d. M
ANS: B
The innermost electron shell is symbolized by the letter K.
17. The shell number of an atom is called the .
a. alpha particle
b. chemical element
c. principal quantum number
d. half-life number
ANS: C
The shell number of an atom is called the principal quantum number.
18. The atomic number of an element is symbolized by the letter .
a. A
b. X
c. Z
d. n
ANS: C
The atomic number of an element is symbolized by the letter Z.
19. Aluminum has an atomic number of 13. How many protons does it have?
a. 13
b. 26
c. 27
d. None of the options
ANS: A
The atomic number equals the number of protons in an atom.
20. Two identical atoms which exist at different energy states are called .
a. isotopes
b. isomers
c. isotones
d. isobars
ANS: B
Two identical atoms which exist at different energy states are called isomers.
Chapter 04: Electromagnetic Energy
MULTIPLE CHOICE
1. The four properties of photons are , , and .
a. size; shape; spin; mass
b. frequency; mass; amplitude; wavelength
c. frequency; wavelength; velocity; amplitude

d. refraction; velocity; spin; amplitude
ANS: C
The properties of photons are frequency, wavelength, velocity, and amplitude.
2. The smallest quantity of any type of electromagnetic radiation is a(n) .
a. photon
b. electron
c. neutrino
d. quark
ANS: A
The smallest quantity of any type of electromagnetic radiation is a photon.
3. What is the velocity of all electromagnetic radiation?
a. 8 103
m/s
b. 2 108
m/s
c. 3 108
m/s
d. 4 103
m/s
ANS: C
The velocity of all electromagnetic radiation is 3 108
m/s.
4. The rate of rise and fall of a sine wave is called its .
a. amplitude
b. frequency
c. wavelength
d. velocity
ANS: B
The rate of rise and fall of a sine wave is called its frequency.
5. A hertz (Hz) is equal to cycle(s) per second.
a. 103
b. 102
c. 10
d. 1
ANS: D
A hertz is equal to 1 cycle per second.
6. What is the electromagnetic wave equation?
a. c = f
b. c = f/
c. c = fv
d. c = f –
ANS: A
The wave equation is c = f .
7. The of electromagnetic radiation is constant.
a. amplitude

b. velocity
c. frequency
d. wavelength
ANS: B
The velocity of electromagnetic radiation is constant.
8. If the wavelength of a beam of electromagnetic radiation increases by a factor of 2, then its
frequency must .
a. double
b. increase four times
c. decrease by half
d. remain constant
ANS: C
If the wavelength of a beam of electromagnetic radiation increases by a factor of 2, then its
frequency must decrease by half.
9. The intensity of radiation in proportion to the square of the distance of
the object from the source.
a. increases; direct
b. decreases; direct
c. increases; inverse
d. decreases; inverse
ANS: D
The intensity of radiation decreases in inverse proportion to the square of the distance of the
object from the source.
10. The reduction of radiation intensity due to scattering and absorption is called .
a. reflection
b. refraction
c. attenuation
d. dispersion
ANS: C
The reduction of radiation intensity due to scattering and absorption is called attenuation.
11. The intensity of radiation on an object is reduced with distance because the radiation
.
a. reduces its velocity
b. increases in wavelength
c. loses its energy
d. is spread out over a greater area
ANS: D
The intensity of radiation on an object is reduced with distance because the radiation is spread
out over a greater area.
12. If the intensity of light from a flashlight is 4 millilumens (mlm) at a distance of 3 feet, what
will the intensity be at 6 feet?
a. 0.4 millilumens

b. 1 millilumen
c. 2 millilumens
d. 16 millilumens
ANS: B
If the intensity of light from a flashlight is 4 millilumens (mlm) at a distance of 3 feet using the
inverse square law, it will be 1 millilumen at 6 feet.
13. The diagnostic range of x-ray energy is .
a. 30 to 150 kVp
b. 200 to 300 kVp
c. 300 to 1000 kVp
d. over 1 MV
ANS: A
The diagnostic range of x-ray energy is 30 to 150 kVp.
14. The energy of a photon is directly proportional to its .
a. amplitude
b. frequency
c. velocity
d. wavelength
ANS: B
The energy of a photon is directly proportional to its frequency.
15. The mass equivalent of a 100 KeV photon of radiation can be calculated using the .
a. inverse square formula
b. equivalent Planck equation
c. relativity formula
d. Planck quantum equation
ANS: C
The mass equivalent of a 100 KeV photon of radiation can be calculated using the relativity
formula.
16. X-rays are usually identified by their .
a. energy
b. velocity
c. wavelength
d. hertz
ANS: A
X-rays are usually identified by their energy.
17. The lowest energy range of the electromagnetic spectrum is .
a. sound waves
b. radio waves
c. gamma rays
d. microwaves
ANS: B

The lowest energy range on the electromagnetic spectrum is radio waves.
18. Gamma rays are produced in the of the atom.
a. outer electron shell
b. inner electron shell
c. nucleus
d. K-shell
ANS: C
Gamma rays are produced in the nucleus of the atom.
19. Photons tend to interact with matter their wavelength.
a. equal in size to
b. larger in size than
c. smaller in size than
d. unequal in size to
ANS: A
Photons tend to interact with matter equal in size to their wavelength.
20. Photons with the highest frequencies have the .
a. highest velocity
b. lowest energy
c. longest wavelengths
d. shortest wavelengths
ANS: D
Photons with the highest frequencies have the shortest wavelengths.
Chapter 05: Electricity, Magnetism, and Electromagnetism
MULTIPLE CHOICE
1. The smallest unit of electrical charge is the .
a. electron
b. proton
c. neutron
d. neutrino
ANS: A
The smallest unit of electrical charge is the electron.
2. Electrification occurs through the movement of .
a. protons only
b. protons and electrons
c. electrons only
d. electrons and neutrons
ANS: C
Electrification occurs only through the movement of electrons.

3. Like charges and unlike charges _.
a. repel; repel
b. attract; attract
c. attract; repel
d. repel; attract
ANS: D
Like charges repel and unlike charges attract.
4. Electrostatic force is proportional to the distance between charges, and
proportional to the product of the charges.
a. directly; inversely
b. inversely; directly
c. inversely; inversely
d. directly; directly
ANS: B
Electrostatic force is inversely proportional to the distance between charges, and directly
proportional to the product of the charges.
5. The charges on an electrified object are distributed .
a. in the center of the object
b. on the side nearest the charge
c. on the topside of the object
d. evenly throughout the object
ANS: D
The charges on an electrified object are distributed evenly throughout.
6. On the surface of an electrified object, the charges concentrate on the .
a. top side
b. underside
c. sharpest curvatures
d. smoothest curvatures
ANS: C
On the surface of an electrified object, the charges concentrate on the sharpest curvature.
7. A is a source of direct current.

a. wall socket
b. battery
c. generator
d. spark
ANS: B
A battery is a source of direct current.
8. What is the unit of electric potential?
a. Watt
b. Amp
c. Volt
d. Ohm
ANS: C
The unit of electric potential is the volt.
9. An electric potential applied to a conductor produces a(n) .
a. electric current
b. magnetic field
c. electric insulator and conductor
d. electric current and a magnetic field
ANS: D
When an electric potential is applied to a conductor, both an electric current and a magnetic
field are produced.
10. An alternating (AC) current is represented by a line.
a. sinusoidal
b. horizontal

c. vertical
d. descending
ANS: A
An alternating (AC) current is represented by a sinusoidal line.
11. A uses direct current.
a. hair dryer
b. toaster
c. microwave
d. flashlight
ANS: D
A flashlight is battery operated, and batteries use direct current.
12. Alternating current is produced by a .
a. battery
b. generator
c. capacitor
d. semiconductor
ANS: B
Alternating current is produced by a generator.
13. What is Ohm’s law?
a. I = V/R
b. V = I/R
c. R = VI
d. I = VR

ANS: A
Ohm’s law is I = V/R.
14. A charged particle in motion creates a(n) .
a. negative charge
b. positive charge
c. magnetic field
d. electrostatic charge
ANS: C
A charged particle in motion creates a magnetic field.
15. Electrical power is measured in .
a. coulombs
b. amperes
c. volts
d. watts
ANS: D
Electrical power is measured in watts.
16. Rubber and glass are .
a. semiconductors
b. conductors
c. insulators
d. superconductors
ANS: C
Rubber and glass are insulators because they are nonconductors.

17. The rotation of electrons on their axis is the property called .
a. magnetic force
b. electron spin
c. unified field theory
d. magnetic induction
ANS: B
The rotation of electrons on their axis is the property called electron spin.
18. When a group of dipoles are aligned, they create .
a. a magnetic domain
b. paramagnetic material
c. magnetic resonance
d. a north pole
ANS: A
When a group of dipoles are aligned, they create a magnetic domain.
19. In the United States, alternating current goes through a complete cycle every second.
a. 1/120
ANS: C
In the United States, alternating current goes through a complete cycle every 1/60 second.
20. What is the SI unit of magnetic field strength?
a. Ampere
b. 1/100
c. 1/60
d. 1/30

b. Tesla
c. Dipole
d. Ohm
ANS: B
The SI unit of magnetic field strength is the tesla or gauss.
Chapter 06: The X-Ray Imaging System
MULTIPLE CHOICE
1. The three main parts of the x-ray imaging system are the x-ray tube, , and
.
a. protective barrier; tabletop
b. operating console; high voltage generator
c. rectification circuit; operating console
d. crane assembly; tabletop
ANS: B
The three main parts of the x-ray imaging system are the x-ray tube, operating console, and high
voltage generator.
2. The operating console contains circuits that are .
a. both high voltage and low voltage
b. high voltage only
c. low voltage only
d. non-voltage
ANS: C
The operating console contains circuits that are low voltage only.

3. Variations in power distribution to the x-ray machine are corrected by the .
a. line voltage compensator
b. high voltage autotransformer
c. full-wave rectifier
d. automatic exposure control
ANS: A
Variations in power distribution to the x-ray machine are corrected by the line voltage
compensator.
4. The first component to receive power in the x-ray circuit is the .
a. mA meter
b. high voltage transformer
c. rectifier
d. autotransformer
ANS: D
The first component in the x-ray circuit is the autotransformer.
5. The autotransformer has winding(s).
a. one
b. two
c. three
d. four
ANS: A
The autotransformer has one winding.
6. The circuit provides electrons for the x-ray tube current.

a. rectifier
b. autotransformer
c. high voltage
d. filament
ANS: D
The filament circuit provides electrons for the x-ray tube current.
7. Thermionic emission at the filament determines the across the x-ray tube during
an exposure.
a. kilovoltage
b. milliamperage
c. resistance
d. magnetism
ANS: B
Thermionic emission at the filament determines the milliamperage across the x-ray tube during
an exposure.
8. A step-down transformer is located in the circuit.
a. tube
b. timing
c. filament
d. rectifier
ANS: C
A step-down transformer is located in the filament circuit.
9. The most accurate type of timer is the timer.
a. mechanical

b. electronic
c. synchronous
d. mAs
ANS: B
The most accurate type of timer is the electronic timer.
10. The automatic exposure control (AEC) terminates the exposure when .
a. the set time is reached
b. set radiation leaves the x-ray tube
c. sufficient radiation reaches the image receptor
d. the correct mAs is reached
ANS: C
The automatic exposure control (AEC) terminates the exposure when sufficient radiation
reaches the image receptor.
11. The mAs timer is usually set to give the mA at the time.
a. highest; highest
b. highest; shortest
c. lowest; shortest
d. lowest; highest
ANS: B
The mAs timer is usually set to give the highest mA at the shortest time.
12. The step-up transformer increases voltage times.
a. 500 to 1000
b. 200 to 300
c. 60 to 120

d. 20 to 50
ANS: A
The step-up transformer increases voltage 500 to 1000 times.
13. A diode allows electrons to flow from .
a. anode to cathode
b. cathode to anode
c. cathode to cathode
d. anode to anode
ANS: B
A diode allows electrons to flow from cathode to anode.
14. The high voltage generator contains the high voltage transformer, the , and the
.
a. autotransformer; timer
b. timer; rectifiers
c. kVp meter; filament transformer
d. filament transformer; rectifiers
ANS: B
The high voltage generator contains the high voltage transformer, the filament transformer, and
the rectifiers.
15. The difference in the waveform between the primary and secondary sides of the high voltage
transformer is _.
a. frequency
b. velocity
c. amplitude

d. potential difference
ANS: C
The difference in the waveform between the primary and secondary sides of the high voltage
transformer is amplitude.
16. In modern imaging systems, the components for rectification are .
a. capacitor discharge generators
b. high frequency transformers
c. vacuum tubes
d. solid state semiconductors
ANS: D
In modern imaging systems, the components for rectification are solid state semiconductors.
17. With half-wave rectification, the current flows through the x-ray tube during the
part of the cycle.
a. zero
b. positive or negative
c. positive
d. negative
ANS: C
With half-wave rectification, the current flows through the x-ray tube during the positive part
of the cycle.
18. Full-wave rectified, three-phase units provide an x-ray beam at pulse(es) per second.
a. 1
b. 60
c. 120

d. 360
ANS: D
Full-wave rectified, three-phase units provide an x-ray beam at 360 pulses per second.
19. Voltage across the x-ray tube is most constant with .
a. high frequency generators
b. single-phase, half-wave rectification
c. single-phase, full-wave rectification
d. three-phase, full-wave rectification
ANS: A
Voltage across the x-ray tube is most constant with high frequency generators.
20. Most mammography units operate with generators.
a. capacitor discharge
b. high frequency
c. single-phase
d. three-phase
ANS: B
Most mammography units operate with high frequency generators.
Chapter 07: The X-Ray Tube
MULTIPLE CHOICE
1. The most widely used support structure for the x-ray tube is the .
a. C-arm

b. floor-to-ceiling mount
c. ceiling support system
d. floor support system
ANS: C
The most widely used support structure for the x-ray tube is the ceiling support system.
2. The external structure of the x-ray tube includes the support structure, the protective housing,
and the .
a. anode
b. cathode
c. glass envelope
d. focusing cup
ANS: C
The external structure of the x-ray tube includes the support structure, the protective housing,
and the glass envelope.
3. As an x-ray tube ages, the inside can become coated with tungsten, which can cause in
the tube.
a. convection
b. anode pitting
c. off-focus radiation
d. arcing
ANS: D
Tungsten coating within the tube can cause arcing.
4. The negative side of the x-ray tube holds the .
a. filament

TEST BANK For Radiologic Science for Technologists, 12th Edition by Stewart C Bushong, Verified Chapters 1 - 40, Complete Newest Version.pdf

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TEST BANK For Radiologic Science for Technologists, 12th Edition by Stewart C Bushong, Verified Chapters 1 - 40, Complete Newest Version.pdf