Radiation Protection and Safety Test
Bank
Course Introduction
Radiation Protection and Safety is a comprehensive course designed to introduce students to the fundamental principles and practices of protecting individuals and the environment from the harmful effects of ionizing and non-ionizing radiation. The course covers topics such as the sources and types of radiation, biological effects of radiation exposure, dose measurement and assessment, risk evaluation, regulatory standards, and safe operational procedures. Students will also study the design and implementation of shielding, monitoring, emergency response protocols, and the responsibilities of radiation workers. Throughout the course, emphasis is placed on applying international safety guidelines and ethical considerations to ensure the well-being of society and compliance with legal requirements.
Recommended Textbook
Essentials of Radiographic Physics and Imaging 1st Edition by James Johnston
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16 Chapters
1558 Verified Questions
1558 Flashcards
Source URL: https://quizplus.com/study-set/1323
Page 2
Chapter 1: Introduction to the Imaging Sciences
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75 Verified Questions
75 Flashcards
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Sample Questions
Q1) If a basketball goes from being stationary to a velocity of 15 m/s in 3 seconds,what is its acceleration?
A) 5 N
B) 5 m/s<sup>2</sup>
C) 5 m/s
D) 5 W
Answer: B
Q2) In the British system the unit of measure for length is:
A) meter
B) kilometer
C) foot
D) mile
Answer: C
Q3) The radiologic unit that addresses the different biological effects of different types of ionizing radiation is the:
A) rad
B) roentgen
C) sievert
D) gray
Answer: C
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Chapter 2: Structure of the Atom
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63 Verified Questions
63 Flashcards
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Sample Questions
Q1) If an atom has 15 electrons,which will be the outermost shell?
A) "L"
B) "M"
C) "N"
D) "O"
Answer: B
Q2) The earliest atomic theory based on the arrangement of the solar system is attributed to:
A) Bohr
B) Rutherford
C) Dalton
D) Thomson
Answer: B
Q3) A negative ion is:
A) an electron
B) an atom with more protons than electrons
C) an atom with more neutrons that electrons
D) an atom with more electrons than protons
Answer: D
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Page 4
Chapter 3: Electromagnetic and Particulate Radiation
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58 Verified Questions
58 Flashcards
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Sample Questions
Q1) X-rays and gamma rays are the only electromagnetic radiations that are able to ionize matter.
A)True
B)False
Answer: True
Q2) Wavelength is generally measured in:
A) hertz
B) feet
C) centimeters
D) meters
Answer: D
Q3) Electromagnetic energy cannot travel through a vacuum.
A)True
B)False
Answer: False
Q4) The beta particle is an electron that is emitted from an outer shell.
A)True
B)False
Answer: False
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Chapter 4: X-Ray Circuit
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147 Verified Questions
147 Flashcards
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Sample Questions
Q1) An electromagnet includes:
A) a coil of wire
B) an iron core
C) a solenoid
D) all of the above
Q2) Like poles of a magnet _________ each other and opposite poles ________ each other.
A) attract;attract
B) repel;repel
C) attract;repel
D) repel;attract
Q3) A step-up transformer results in:
A) decreased current
B) decreased voltage
C) A and B
D) none of the above
Q4) Reducing the number of coils in the wire will result in:
A) increased electromagnetic induction
B) reduced electromagnetic induction
C) no effect on electromagnetic induction
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Chapter 5: The X-Ray Tube
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108 Verified Questions
108 Flashcards
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Sample Questions
Q1) The melting point of tungsten is:
A) 400° C
B) 1400° C
C) 2400° C
D) 3400° C
Q2) The cathode:
A) includes a focusing cup
B) provides electrons for x-ray production
C) includes filaments
D) all of the above
Q3) When the exposure switch at the operating console is first depressed:
A) high voltage creates a large potential difference between the anode and cathode
B) the anode starts rotating
C) thermionic emission is achieved
D) B and C
Q4) Using Figure 5-11,B,in the textbook,90 kVp,100 mA,and 0.1 sec is:
A) a safe exposure
B) an unsafe exposure
C) it is impossible to tell
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Chapter 6: X-Ray Production
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68 Verified Questions
68 Flashcards
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Sample Questions
Q1) If the distance is changed from 72 inches to 36 inches and the original beam intensity was 200 mR,what is the new intensity?
A) 50 mR
B) 100 mR
C) 400 mR
D) 800 mR
Q2) The x-ray beam found after leaving the patient is called the:
A) remnant beam
B) primary beam
C) patient beam
D) none of the above
Q3) The primary controlling factor for beam quality is:
A) mAs
B) kVp
C) distance
D) filtration
Q4) When 65 kVp is set on the operating console,no K-characteristic radiation is produced.
A)True
B)False
Page 8
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Chapter 7: X-Ray Interactions With Matter
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63 Verified Questions
63 Flashcards
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Sample Questions
Q1) The fog seen on the radiographic image is the result of:
A) coherent scattering
B) classical scattering
C) photoelectric interactions
D) Compton interactions
Q2) Secondary photons produced during a Compton interaction:
A) are typically high energy
B) usually exit the patient and interact with the image receptor
C) contribute to patient dose
D) none of the above
Q3) Reducing the amount of Compton scattering:
A) is impossible
B) is extremely difficult to accomplish
C) is very important in producing quality images
D) all of the above
Q4) All Compton scatter photons travel in the direction of the image receptor.
A)True
B)False
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Chapter 8: Image Production
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66 Verified Questions
66 Flashcards
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Sample Questions
Q1) The secondary photon that results from the photoelectric interaction:
A) has the same energy as the incident photon
B) has high energy
C) has low energy
D) typically leaves the patient as scatter radiation
Q2) The radiographer has no control over the radiographic visibility of anatomic structures because the tissue does not change.
A)True
B)False
Q3) Scattered and secondary radiation must be eliminated during radiographic imaging.
A)True
B)False
Q4) The probability of a Compton interaction is _______________ in bone than soft tissue.
A) less
B) the same
C) higher
D) none of the above
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Chapter 9: Image Characteristics
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161 Verified Questions
161 Flashcards
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Sample Questions
Q1) If the B + F is 0.15 OD,the log RE is 0.75,and the log RE is 1.33,what is the average gradient?
A) 1.32
B) 2.33
C) 2.76
D) 3.02
Q2) It is impossible to produce a radiographic image without unsharpness.
A)True
B)False
Q3) Most radiographic film has an average gradient between:
A) 1 and 2
B) 2.5 and 3.5
C) 4 and 5
D) 5.5 and 6.5
Q4) Radiographic contrast should change based on the anatomy being imaged.
A)True
B)False
Q5) When the foot is placed directly on the image receptor,there is no OID.
A)True
B)False
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Chapter 10: Radiographic Exposure Technique
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163 Verified Questions
163 Flashcards
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Sample Questions
Q1) If a film image has to be repeated because it is too dark or too light,the mAs must be changed by a factor of at least:
A) 1
B) 2
C) 4
D) 30
Q2) If the original exposure factors are 20 mAs @ 70 kVp,which of the following factors produce a film image with the same density but higher contrast?
A) 10 mAs @ 80 kVp
B) 10 mAs @ 70 kVp
C) 40 mAs @ 70 kVp
D) 40 mAs @60 kVp
Q3) Focal spot size is determined by:
A) the amount of kVp
B) cathode filament size
C) cathode focusing cup size
D) all of the above
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Page 12
Chapter 11: Scatter Control
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80 Verified Questions
80 Flashcards
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Sample Questions
Q1) Restriction of the primary beam to the anatomy of interest:
A) reduces patient exposure
B) is a major cause of repeated images
C) reduces the amount of scatter produced
D) A and C
Q2) The Moiré effect can be caused by:
A) using a grid with a frequency similar to the CR laser scanning frequency
B) using a focused grid upside down in the bucky
C) using a grid cassette in the bucky
D) A and C
Q3) The beam-restriction device that includes a visible light projecting the x-ray field size onto the patient is the:
A) aperture diaphragm
B) collimator
C) cone or cylinder
D) none of the above
Q4) The grid used for the air gap technique should be high frequency.
A)True
B)False
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Chapter 12: Image Receptors
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167 Verified Questions
167 Flashcards
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Sample Questions
Q1) Indirect capture cassette-less digital imaging systems use:
A) charge-coupled devices
B) photoconductors and TFT arrays
C) scintillator and TFT array
D) A and C
Q2) The purpose of film processing is to convert the _______________ image to the __________________ image.
A) manifest;manifest
B) manifest;latent
C) latent;manifest
D) latent;latent
Q3) One half of the Nyquist frequency is equal to:
A) the spatial resolution of a digital system
B) the contrast resolution of a digital system
C) the amount of noise in a digital system
D) none of the above
Q4) Intensifying screens do not need cleaning because they never get exposed to dust or dirt.
A)True
B)False
Page 14
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Chapter 13: Automatic Exposure Control
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60 Verified Questions
60 Flashcards
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Sample Questions
Q1) Using the plus or minus density controls should be done frequently to produce optimal images with AEC.
A)True
B)False
Q2) With film-screen imaging using AEC,if an AP thoracic spine is imaged using an outside instead of center detector,the density in the area of interest will be __________________ and the patient will be ________________________.(Assume all other factors are appropriate. )
A) light;underexposed
B) light;overexposed
C) dark;underexposed
D) appropriate;underexposed
Q3) The two types of detectors used in AEC are:
A) image intensifiers and phototimers
B) phototimers and ionization chambers
C) ionization chambers and Geiger counters
D) none of the above
Q4) When using AEC,the exit radiation is converted into an electrical signal.
A)True
B)False
15
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Chapter 14: Image Intensified Fluoroscopy
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100 Verified Questions
100 Flashcards
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Sample Questions
Q1) The commercial fluoroscope was developed by:
A) Rutherford
B) Edison
C) Newton
D) Einstein
Q2) As the camera's electron beam moves across the target,the electric signal that is produced and goes to the television monitor maintains a constant level to produce a quality image.
A)True
B)False
Q3) Testing kVp accuracy,timer accuracy,and automatic exposure control system performance are part of the:
A) performance quality control testing
B) operational quality control testing
C) A and B
D) none of the above
Q4) Which of the following is more light-sensitive?
A) video camera
B) CCD
C) there is no difference between the two
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Chapter 15: Additional Equipment
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54 Verified Questions
54 Flashcards
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Sample Questions
Q1) Linear tomography is used to overcome the limitation that some anatomic areas are difficult to see because they are superimposed by other structures.
A)True
B)False
Q2) A dedicated chest room allows the radiographer to stay in the room while the images are being processed.
A)True
B)False
Q3) The horizontal level that extends through the body that includes the pivot point is the:
A) tomographic amplitude
B) exposure amplitude
C) fulcrum
D) focal plane
Q4) The mammography unit's x-ray tube window is made of molybdenum.
A)True
B)False
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Chapter 16: Computed Tomography
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125 Verified Questions
125 Flashcards
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Sample Questions
Q1) This scanner uses a wide fan beam and a rotating array of detectors.
A) first generation
B) second generation
C) third generation
D) fourth generation
Q2) This CT scanner took approximately 30 seconds to produce a single image.
A) first generation
B) second generation
C) third generation
D) fourth generation
Q3) The smallest component of the matrix is the:
A) matrix
B) pixel
C) voxel
D) voxel volume
Q4) Image postprocessing results in the image data changing.
A)True
B)False
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Page 18