Question 1

____________ is measured in cd/m²/mR/s.

Accepted Answer

A) Brightness gain 
B) Flux gain 
C) Minification gain 
D) Conversion factor 
A) Brightness gain 
B) Flux gain 
C) Minification gain 
D) Conversion factor

Question 2

The ABC can be slow in responding,seen as a brief delay in the brightness adjustment.

Accepted Answer

A) True 
 B)False

Question 3

Before the image intensifier,the fluoroscopist may have worn _____ goggles to make it easier to see the dim fluoroscopic image.

Accepted Answer

A) blue 
B) green 
C) red 
D) yellow 
A) blue 
B) green 
C) red 
D) yellow

Question 4

Fluoroscopic imaging systems operate at: ________

Accepted Answer

A) 2-5 mA 
B) 15-20 mA 
C) 200-500 mA 
D) Unlimited mA 
A) 2-5 mA 
B) 15-20 mA 
C) 200-500 mA 
D) Unlimited mA

Question 5

The ratio of the number of light photons at the output phosphor as compared with the input phosphor is the

Accepted Answer

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

Question 6

Which of the following has a rectangular field of view and a wider dynamic range?

Accepted Answer

A) Conventional image intensifier. 
B) Flat-panel detector in place of image intensifier. 
C) There is no difference between the two. 
A) Conventional image intensifier. 
B) Flat-panel detector in place of image intensifier. 
C) There is no difference between the two.

Question 7

This allows the film to be divided into 2,4,or more images

Accepted Answer

A) Cassette spot filming with masking shutters 
B) Film cameras for spot filming 
C) Videotape 
D) Flat panel detector 
A) Cassette spot filming with masking shutters 
B) Film cameras for spot filming 
C) Videotape 
D) Flat panel detector

Question 8

The original fluoroscopic image was very

Accepted Answer

A) dim 
B) bright 
C) clear 
D) fuzzy 
A) dim 
B) bright 
C) clear 
D) fuzzy

Question 9

Which of the following recording systems require the x-ray-beam to be in radiographic mode?

Accepted Answer

A) Cassette spot filming. 
B) Film cameras for spot filming. 
C) Cine filming. 
D) Flat panel detector. 
A) Cassette spot filming. 
B) Film cameras for spot filming. 
C) Cine filming. 
D) Flat panel detector.

Question 10

Which of the following requires more radiation to produce quality fluoroscopic images?

Accepted Answer

A) Conventional image intensifier. 
B) Flat-panel detector in place of image intensifier. 
C) There is no difference between the two. 
A) Conventional image intensifier. 
B) Flat-panel detector in place of image intensifier. 
C) There is no difference between the two.

Question 11

The target layer is a photoconductive layer made of antimony trisulfide in ______ tubes and lead oxide in ______ tubes.

Accepted Answer

A) x-ray;vidicon 
B) vidicon;x-ray 
C) vidicon;plumbicon 
D) plumbicon;vidicon 
A) x-ray;vidicon 
B) vidicon;x-ray 
C) vidicon;plumbicon 
D) plumbicon;vidicon

Question 12

The formula for brightness gain is

Accepted Answer

A) brightness gain = minification gain - flux gain 
B) brightness gain = minification gain / flux gain 
C) brightness gain = minification gain × flux gain 
D) None of the above 
A) brightness gain = minification gain - flux gain 
B) brightness gain = minification gain / flux gain 
C) brightness gain = minification gain × flux gain 
D) None of the above

Question 13

A disadvantage of using magnification mode during fluoroscopy is

Accepted Answer

A) the image has less resolution 
B) the image brightness is inconsistent 
C) the patient receives additional dose 
D) none of the above 
A) the image has less resolution 
B) the image brightness is inconsistent 
C) the patient receives additional dose 
D) none of the above

Question 14

Typical fluoroscopic systems have spatial resolution capabilities in the range of

Accepted Answer

A) 2-3 Lp/mm 
B) 4-6 Lp/mm 
C) 7-9 Lp/mm 
D) 10-12 Lp/mm 
A) 2-3 Lp/mm 
B) 4-6 Lp/mm 
C) 7-9 Lp/mm 
D) 10-12 Lp/mm

Question 15

The conventional method for viewing the fluoroscopic image is by

Accepted Answer

A) using a handheld device 
B) looking directly at the output phosphor 
C) using a television monitor 
D) using a mirror-optics system 
A) using a handheld device 
B) looking directly at the output phosphor 
C) using a television monitor 
D) using a mirror-optics system

Question 16

In LCD monitors,the liquid crystal layer sandwiched between polarizing layers contains crystals that are in an ________ state,but become __________ when electric current is applied.

Accepted Answer

A) organized and untwisted;unorganized and twisted 
B) organized and twisted;unorganized and untwisted 
C) unorganized and untwisted;organized and twisted 
D) unorganized and twisted;organized and untwisted 
A) organized and untwisted;unorganized and twisted 
B) organized and twisted;unorganized and untwisted 
C) unorganized and untwisted;organized and twisted 
D) unorganized and twisted;organized and untwisted

Question 17

When the electron beam sweeps the anode and travels back and forth across,from top to bottom,it is moving in a ___________ pattern.

Accepted Answer

A) sweep 
B) brush 
C) raster 
D) rooster 
A) sweep 
B) brush 
C) raster 
D) rooster

Question 18

This part of the image intensifier is made of cesium and antimony compounds.

Accepted Answer

A) Input phosphor. 
B) Output phosphor. 
C) Photocathode. 
D) Electrostatic focusing lenses. 
A) Input phosphor. 
B) Output phosphor. 
C) Photocathode. 
D) Electrostatic focusing lenses.

Question 19

The analog-to-digital converter

Accepted Answer

A) takes the video (analog)signal and divides it into binary language that the computer "understands." 
B) determines the contrast resolution of the system 
C) is necessary for the computer to process and display the image 
D) all of the above 
A) takes the video (analog)signal and divides it into binary language that the computer "understands." 
B) determines the contrast resolution of the system 
C) is necessary for the computer to process and display the image 
D) all of the above

Question 20

The image intensifier is located

Accepted Answer

A) next to the x-ray tube used for fluoroscopy 
B) beneath the x-ray table 
C) on a shelf just inside the room 
D) inside the fluoroscopic tower 
A) next to the x-ray tube used for fluoroscopy 
B) beneath the x-ray table 
C) on a shelf just inside the room 
D) inside the fluoroscopic tower

____________ is measured in cd/m²/mR/s.

The ABC can be slow in responding,seen as a brief delay in the brightness adjustment.

Before the image intensifier,the fluoroscopist may have worn _____ goggles to make it easier to see the dim fluoroscopic image.

Fluoroscopic imaging systems operate at: ________

The ratio of the number of light photons at the output phosphor as compared with the input phosphor is the

Which of the following has a rectangular field of view and a wider dynamic range?

This allows the film to be divided into 2,4,or more images

The original fluoroscopic image was very

Which of the following recording systems require the x-ray-beam to be in radiographic mode?

Which of the following requires more radiation to produce quality fluoroscopic images?

The target layer is a photoconductive layer made of antimony trisulfide in tubes and lead oxide in tubes.

The formula for brightness gain is

A disadvantage of using magnification mode during fluoroscopy is

Typical fluoroscopic systems have spatial resolution capabilities in the range of

The conventional method for viewing the fluoroscopic image is by

In LCD monitors,the liquid crystal layer sandwiched between polarizing layers contains crystals that are in an state,but become __ when electric current is applied.

When the electron beam sweeps the anode and travels back and forth across,from top to bottom,it is moving in a ___________ pattern.

This part of the image intensifier is made of cesium and antimony compounds.

The analog-to-digital converter

The image intensifier is located

Introduction to the Imaging Sciences

Structure of the Atom

Electromagnetic and Particulate Radiation

The X-Ray Circuit

The X-Ray Tube

X-Ray Production

X-Ray Interactions With Matter

Image Production

Image Quality and Characteristics

Radiographic Exposure Technique

Scatter Control

Image Receptors

Exposure Technique Selection

Additional Equipment

Computed Tomography

Filters

Exam 14: Image Intensified Fluoroscopy

____________ is measured in cd/m²/mR/s.

The ABC can be slow in responding,seen as a brief delay in the brightness adjustment.

Before the image intensifier,the fluoroscopist may have worn _____ goggles to make it easier to see the dim fluoroscopic image.

Fluoroscopic imaging systems operate at: ________

The ratio of the number of light photons at the output phosphor as compared with the input phosphor is the

Which of the following has a rectangular field of view and a wider dynamic range?

This allows the film to be divided into 2,4,or more images

The original fluoroscopic image was very

Which of the following recording systems require the x-ray-beam to be in radiographic mode?

Which of the following requires more radiation to produce quality fluoroscopic images?

The target layer is a photoconductive layer made of antimony trisulfide in ______ tubes and lead oxide in ______ tubes.

The formula for brightness gain is

A disadvantage of using magnification mode during fluoroscopy is

Typical fluoroscopic systems have spatial resolution capabilities in the range of

The conventional method for viewing the fluoroscopic image is by

In LCD monitors,the liquid crystal layer sandwiched between polarizing layers contains crystals that are in an ________ state,but become __________ when electric current is applied.

When the electron beam sweeps the anode and travels back and forth across,from top to bottom,it is moving in a ___________ pattern.

This part of the image intensifier is made of cesium and antimony compounds.

The analog-to-digital converter

The image intensifier is located

Introduction to the Imaging Sciences

Structure of the Atom

Electromagnetic and Particulate Radiation

The X-Ray Circuit

The X-Ray Tube

X-Ray Production

X-Ray Interactions With Matter

Image Production

Image Quality and Characteristics

Radiographic Exposure Technique

Scatter Control

Image Receptors

Exposure Technique Selection

Additional Equipment

Computed Tomography

Filters

The target layer is a photoconductive layer made of antimony trisulfide in tubes and lead oxide in tubes.

In LCD monitors,the liquid crystal layer sandwiched between polarizing layers contains crystals that are in an state,but become __ when electric current is applied.