Question 1

In digital radiography the number of different shades of gray that can be stored in memory and displayed on a computer monitor is termed

Accepted Answer

A)  contrast matrix.
B)  grayscale.
C)  shadows.
D)  pixels.E) A) and B)
F) B) and C)

Question 2

Depending on the area of the body being examined with a fluoroscopic image intensification system,a range of ___________ kVp is generally used for adult patients.

Accepted Answer

A)  30 to 60
B)  60 to 75
C)  75 to 110
D)  110 to 140E) B) and C)
F) B) and D)

Question 3

The control panel,where technical exposure factors are selected and visually displayed for the equipment operator,must be located

Accepted Answer

A)  at the foot end of the radiographic examining table.
B)  at the head end of the radiographic examining table.
C)  behind a suitable protective barrier that has a radiation-absorbent window that permits observation of the patient during any procedure.
D)  behind any regular wall that has a regular glass window that permits observation of the patient during any procedure.E) All of the above
F) C) and D)

Question 4

Luminance is determined by measuring the concentration of light

Accepted Answer

A)  at only one particular point on the field of view.
B)  over a particular field of view.
C)  at only one particular point on the field of view and then squaring the number.
D)  over a particular field of view and then squaring the number.E) All of the above
F) B) and D)

Question 5

When generator settings are changed from one mA and time combination to another,the most that linearity can vary is

Accepted Answer

A)  0%.
B)  10%.
C)  20%.
D)  50%.E) A) and B)
F) None of the above

Question 6

To visualize smaller and lower contrast objects during interventional procedures,high level control fluoroscopy uses exposure rates that are ____________ those normally used in routine fluoroscopy.

Accepted Answer

A)  higher than
B)  lower than
C)  the same as
D)  None of the above,because smaller and lower contrast objects cannot be visualized by fluoroscopy during interventional procedures.E) C) and D)
F) A) and B)

Question 7

Of the following procedures,which involve extended fluoroscopic time?
1) Biliary drainage
2) Stent and filter placement
3) Urinary or biliary stone removal

Accepted Answer

A)  1 and 2 only
B)  1 and 3 only
C)  2 and 3 only
D)  1,2,and 3E) A) and C)
F) None of the above

Question 8

Total filtration of _______________________ for fixed x-ray units operating above 70 kVp is the regulatory standard.

Accepted Answer

A)  1.0-mm aluminum equivalent
B)  1.5-mm aluminum equivalent
C)  2.0-mm aluminum equivalent
D)  2.5-mm aluminum equivalentE) C) and D)
F) None of the above

Question 9

When performing a mobile radiographic procedure,to reduce the radiation exposure to the patient,the radiographer must use a minimal source-skin distance of

Accepted Answer

A)  15 cm.
B)  30 cm.
C)  38 cm.
D)  45 cm.E) B) and D)
F) C) and D)

Question 10

When using digital fluoroscopy systems,making use of the last image hold feature can

Accepted Answer

A)  be an effective dose reduction technique.
B)  eliminate the need to collimate the primary beam.
C)  eliminate the need for body or part immobilization.
D)  lead to a 50% reduction of technical exposure factors.E) A) and B)
F) A) and C)

Question 11

When an exposed computed radiography imaging plate is ready to be processed,an imaging reading unit is used to scan the photostimulable phosphor imaging plate with a helium-neon laser beam.This process results in the emission of violet light that is changed into an electronic signal by a device called a

Accepted Answer

A)  charge-coupled device array.
B)  photodiode.
C)  photomultiplier tube.
D)  scintillator.E) A) and D)
F) A) and B)

Question 12

In standard image intensification fluoroscopy,an x-ray beam half-value-layer (HVL) of 3 to 4.5 mm aluminum is considered acceptable when kVp ranges from

Accepted Answer

A)  50 to 60.
B)  60 to 70.
C)  70 to 80.
D)  80 to 100.E) A) and D)
F) A) and C) D

Question 13

The protective tube housing serves as a shield against _____________________ entering the x-ray tube,thereby preventing electric shock while also facilitating cooling of the x-ray tube.

Accepted Answer

A)  the high voltage
B)  the low voltage
C)  lose inherent filter particles
D)  collimator componentsE) B) and C)
F) A) and D) A

Question 14

What is the purpose of radiographic beam filtration?

Accepted Answer

A)  To reduce exposure to the patient's skin and superficial tissues by absorbing most of the higher-energy photons from the heterogeneous beam.
B)  To reduce exposure to the patient's skin and superficial tissues by absorbing most of the lower-energy photons from the heterogeneous beam.
C)  To reduce exposure to the patient's skin and superficial tissues by absorbing all of the higher-energy photons from the homogeneous beam.
D)  To reduce exposure to the patient's skin and superficial tissues by removing all the lower-energy photons from the homogeneous beam.E) B) and D)
F) A) and B)

Question 15

Digital radiography images can be accessed

Accepted Answer

A)  at only one workstation at a time,thereby decreasing convenience for physicians providing patient care.
B)  at no more than two workstations at a time,thereby decreasing convenience for physicians providing patient care.
C)  at several workstations at the same time,thus making image viewing very convenient for physicians providing patient care.
D)  digital images cannot be accessed at any workstations by physicians.E) A) and B)
F) B) and D) C

Question 16

Digital radiography systems offer several advantages over computed radiography.Some of these include
1) lower dose.
2) ease of use.
3) immediate imaging results.
4) manipulation of the image.

Accepted Answer

A)  1,2,and 3 only
B)  1,2,and 4 only
C)  2,3,and 4 only
D)  1,2,3,and 4E) A) and B)
F) A) and C)

Question 17

Which of the following materials is commonly used in the tabletop of a radiographic examination table to make the tabletop as radiolucent as possible so that it will absorb only a minimal amount of radiation,thereby reducing the patient's radiation dose?

Accepted Answer

A)  Carbon fiber material
B)  Formica
C)  Granite
D)  SlateE) A) and D)
F) A) and C)

Question 18

Which of the following is not an x-ray beam limitation device?

Accepted Answer

A)  Cone
B)  Collimator
C)  Filter
D)  Extension cylinderE) B) and C)
F) C) and D)

Question 19

Computed radiography,because of its higher exposure latitude,makes grid use on the pediatric population

Accepted Answer

A)  absolutely necessary for all radiographic examinations.
B)  less necessary than was previously believed.
C)  necessary only for extremity examinations.
D)  unnecessary for any examination.E) All of the above
F) None of the above

Question 20

During a fluoroscopic examination,a resettable cumulative timing device measures the x-ray beam-on time and sounds an audible alarm or in some cases temporarily interrupts the exposure after the fluoroscope has been activated for what length of time?

Accepted Answer

A)  1 minute
B)  3 minutes
C)  5 minutes
D)  10 minutesE) B) and C)
F) None of the above

Exam 11: Equipment Design for Radiation Protection

In digital radiography the number of different shades of gray that can be stored in memory and displayed on a computer monitor is termed

Correct Answer
verified

Depending on the area of the body being examined with a fluoroscopic image intensification system,a range of ___________ kVp is generally used for adult patients.

Correct Answer
verified

The control panel,where technical exposure factors are selected and visually displayed for the equipment operator,must be located

Correct Answer
verified

Luminance is determined by measuring the concentration of light

Correct Answer
verified

When generator settings are changed from one mA and time combination to another,the most that linearity can vary is

Correct Answer
verified

To visualize smaller and lower contrast objects during interventional procedures,high level control fluoroscopy uses exposure rates that are ____________ those normally used in routine fluoroscopy.

Correct Answer
verified

Of the following procedures,which involve extended fluoroscopic time? 1) Biliary drainage 2) Stent and filter placement 3) Urinary or biliary stone removal

Correct Answer
verified

Total filtration of _______________________ for fixed x-ray units operating above 70 kVp is the regulatory standard.

Correct Answer
verified

When performing a mobile radiographic procedure,to reduce the radiation exposure to the patient,the radiographer must use a minimal source-skin distance of

Correct Answer
verified

When using digital fluoroscopy systems,making use of the last image hold feature can

Correct Answer
verified

Correct Answer
verified

In standard image intensification fluoroscopy,an x-ray beam half-value-layer (HVL) of 3 to 4.5 mm aluminum is considered acceptable when kVp ranges from

Correct Answer
verified
D

The protective tube housing serves as a shield against _____________________ entering the x-ray tube,thereby preventing electric shock while also facilitating cooling of the x-ray tube.

Correct Answer
verified
A

What is the purpose of radiographic beam filtration?

Correct Answer
verified

Digital radiography images can be accessed

Correct Answer
verified
C

Digital radiography systems offer several advantages over computed radiography.Some of these include 1) lower dose. 2) ease of use. 3) immediate imaging results. 4) manipulation of the image.

Correct Answer
verified

Which of the following materials is commonly used in the tabletop of a radiographic examination table to make the tabletop as radiolucent as possible so that it will absorb only a minimal amount of radiation,thereby reducing the patient's radiation dose?

Correct Answer
verified

Which of the following is not an x-ray beam limitation device?

Correct Answer
verified

Computed radiography,because of its higher exposure latitude,makes grid use on the pediatric population

Correct Answer
verified

During a fluoroscopic examination,a resettable cumulative timing device measures the x-ray beam-on time and sounds an audible alarm or in some cases temporarily interrupts the exposure after the fluoroscope has been activated for what length of time?

Correct Answer
verified

Exam 11: Equipment Design for Radiation Protection

In digital radiography the number of different shades of gray that can be stored in memory and displayed on a computer monitor is termed

Correct AnswerverifiedShow Answer

Depending on the area of the body being examined with a fluoroscopic image intensification system,a range of ___________ kVp is generally used for adult patients.

Correct AnswerverifiedShow Answer

The control panel,where technical exposure factors are selected and visually displayed for the equipment operator,must be located

Correct AnswerverifiedShow Answer

Luminance is determined by measuring the concentration of light

Correct AnswerverifiedShow Answer

When generator settings are changed from one mA and time combination to another,the most that linearity can vary is

Correct AnswerverifiedShow Answer

To visualize smaller and lower contrast objects during interventional procedures,high level control fluoroscopy uses exposure rates that are ____________ those normally used in routine fluoroscopy.

Correct AnswerverifiedShow Answer

Of the following procedures,which involve extended fluoroscopic time? 1) Biliary drainage 2) Stent and filter placement 3) Urinary or biliary stone removal

Correct AnswerverifiedShow Answer

Total filtration of _______________________ for fixed x-ray units operating above 70 kVp is the regulatory standard.

Correct AnswerverifiedShow Answer

When performing a mobile radiographic procedure,to reduce the radiation exposure to the patient,the radiographer must use a minimal source-skin distance of

Correct AnswerverifiedShow Answer

When using digital fluoroscopy systems,making use of the last image hold feature can

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In standard image intensification fluoroscopy,an x-ray beam half-value-layer (HVL) of 3 to 4.5 mm aluminum is considered acceptable when kVp ranges from

Correct AnswerverifiedD

The protective tube housing serves as a shield against _____________________ entering the x-ray tube,thereby preventing electric shock while also facilitating cooling of the x-ray tube.

Correct AnswerverifiedA

What is the purpose of radiographic beam filtration?

Correct AnswerverifiedShow Answer

Digital radiography images can be accessed

Correct AnswerverifiedC

Digital radiography systems offer several advantages over computed radiography.Some of these include 1) lower dose. 2) ease of use. 3) immediate imaging results. 4) manipulation of the image.

Correct AnswerverifiedShow Answer

Which of the following materials is commonly used in the tabletop of a radiographic examination table to make the tabletop as radiolucent as possible so that it will absorb only a minimal amount of radiation,thereby reducing the patient's radiation dose?

Correct AnswerverifiedShow Answer

Which of the following is not an x-ray beam limitation device?

Correct AnswerverifiedShow Answer

Computed radiography,because of its higher exposure latitude,makes grid use on the pediatric population

Correct AnswerverifiedShow Answer

During a fluoroscopic examination,a resettable cumulative timing device measures the x-ray beam-on time and sounds an audible alarm or in some cases temporarily interrupts the exposure after the fluoroscope has been activated for what length of time?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
D

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified