Question 1

The __________________________ absorbs x-rays and emits light.

Accepted Answer

A)  input phosphor
B)  output phosphor
C)  photocathode
D)  accelerating anode

Question 2

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.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following is an advantage of flat panel detectors used in fluoroscopy?

Accepted Answer

A)  Much lighter and more compact.
B)  Produce a digital signal directly.
C)  Less electronic noise.
D)  60 times larger operational dynamic range because they do not exhibit veiling glare.
E)  All of the above.

Question 4

Digital fluoroscopy is improved by using

Accepted Answer

A)  a vidicon camera
B)  videotape
C)  a beam-splitting mirror
D)  a charge-coupling device (CC
D)

Question 5

The electronic vacuum tube that converts the remnant beam to light,then to electrons,then back to light,increasing the light intensity in the process is the

Accepted Answer

A)  x-ray tube
B)  image intensifier
C)  recording system
D)  mirror optics

Question 6

The formula for minification gain is

Accepted Answer

A)  minification gain = input phosphor diameter / output phosphor diameter
B)  minification gain = input phosphor diameter² / output phosphor diameter²
C)  minification gain = output phosphor diameter / input phosphor diameter
D)  minification gain = output phosphor diameter²/ input phosphor diameter²

Question 7

An expression of the ability of an image intensifier tube to convert x-ray energy into light energy and increase the brightness of the image in the process is the

Accepted Answer

A)  brightness gain
B)  flux gain
C)  minification gain
D)  conversion factor

Question 8

An electron gun can be found in the

Accepted Answer

A)  television monitor
B)  CCD
C)  vidicon camera
D)  A and C
E)  B and C

Question 9

Distortion of the fluoroscopic image that appears as unequal magnification is

Accepted Answer

A)  noise
B)  pincushion appearance
C)  vignetting
D)  magnification

Question 10

A face plate,signal plate,and target are all components of the

Accepted Answer

A)  anode of the camera tube
B)  charge coupled device (CC
D)  
C)  cathode of the camera tube
D)  x-ray tube

Question 11

Each capacitor in a CCD represents a(n)

Accepted Answer

A)  line
B)  image
C)  pixel
D)  electric charge

Question 12

When using magnification mode,the fluoroscopist needs to set the exposure factors higher to compensate for the reduced diameter useful input phosphor.

Accepted Answer

A) True 
 B)False

Question 13

This part of the image intensifier is made of zinc cadmium sulfide.

Accepted Answer

A)  Input phosphor.
B)  Output phosphor.
C)  Photocathode.
D)  Accelerating anode.

Question 14

The recording device that "photographs" the image off of the output phosphor is the

Accepted Answer

A)  cassette spot filming
B)  film cameras for spot filming
C)  videotape
D)  flat panel detector

Question 15

The difference between geometric magnification and electronic magnification is

Accepted Answer

A)  geometric magnification is where the patient is placed closer to the x-ray tube to create a larger OID and electronic magnification involves the selection of a smaller field of view
B)  electronic magnification is where the patient is placed closer to the x-ray tube to create a larger OID and geometric magnification involves the selection of a smaller field of view
C)  there is no difference between geometric magnification and electronic magnification

Exam 14: Image Intensified Fluoroscopy

The recording device that "photographs" the image off of the output phosphor is the

Correct Answer
verified

An expression of the ability of an image intensifier tube to convert x-ray energy into light energy and increase the brightness of the image in the process is the

Correct Answer
verified

The electronic vacuum tube that converts the remnant beam to light,then to electrons,then back to light,increasing the light intensity in the process is the

Correct Answer
verified

Digital fluoroscopy is improved by using

Correct Answer
verified

This part of the image intensifier is made of zinc cadmium sulfide.

Correct Answer
verified

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.

Correct Answer
verified

The difference between geometric magnification and electronic magnification is

Correct Answer
verified

The __________________________ absorbs x-rays and emits light.

Correct Answer
verified

Distortion of the fluoroscopic image that appears as unequal magnification is

Correct Answer
verified

A face plate,signal plate,and target are all components of the

Correct Answer
verified

The formula for minification gain is

Correct Answer
verified

Each capacitor in a CCD represents a(n)

Correct Answer
verified

An electron gun can be found in the

Correct Answer
verified

When using magnification mode,the fluoroscopist needs to set the exposure factors higher to compensate for the reduced diameter useful input phosphor.

Correct Answer
verified

Which of the following is an advantage of flat panel detectors used in fluoroscopy?

Correct Answer
verified

Exam 14: Image Intensified Fluoroscopy

The recording device that "photographs" the image off of the output phosphor is the

Correct AnswerverifiedShow Answer

An expression of the ability of an image intensifier tube to convert x-ray energy into light energy and increase the brightness of the image in the process is the

Correct AnswerverifiedShow Answer

The electronic vacuum tube that converts the remnant beam to light,then to electrons,then back to light,increasing the light intensity in the process is the

Correct AnswerverifiedShow Answer

Digital fluoroscopy is improved by using

Correct AnswerverifiedShow Answer

This part of the image intensifier is made of zinc cadmium sulfide.

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

The difference between geometric magnification and electronic magnification is

Correct AnswerverifiedShow Answer

The __________________________ absorbs x-rays and emits light.

Correct AnswerverifiedShow Answer

Distortion of the fluoroscopic image that appears as unequal magnification is

Correct AnswerverifiedShow Answer

A face plate,signal plate,and target are all components of the

Correct AnswerverifiedShow Answer

The formula for minification gain is

Correct AnswerverifiedShow Answer

Each capacitor in a CCD represents a(n)

Correct AnswerverifiedShow Answer

An electron gun can be found in the

Correct AnswerverifiedShow Answer

When using magnification mode,the fluoroscopist needs to set the exposure factors higher to compensate for the reduced diameter useful input phosphor.

Correct AnswerverifiedShow Answer

Which of the following is an advantage of flat panel detectors used in fluoroscopy?

Correct AnswerverifiedShow Answer

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