Fluoroscopy Exam Rated A | 79 Questions with
100% Correct Answers
The edge distortion problem in image intensification tubes is called
Vignetting
The ability of the image intensifier to increase image illumination is:
Brightness Gain
During fluoroscopic image intensification, the primary beam exits the patient and strikes
what part of the II?
Input Screen
Formula for Flux Gain
Flux Gain= Number of output photons / Number of input photons
The photocathode is composed of what type of metals?
Photoemission
Name two types of tv-camera tubes?
Vidicon and Plumbicon
Brightness gain is decreased by as much as _______% per year
10%
Formula for Brightness gain
Brightness Gain = Flux Gain x Minification Gain
, The plumbicon camera tube is best suited for fluoroscopic imaging of what type of
structure?
the heart
An image that displays vingetting will have what appearance at the edges?
dim
Which part of the target assembly of a video camera tube conducts the video signal from
the video camera tube to the TV monitor?
Signal Plate
What shape is the input screen?
Concave
Electrostatic lenses are used to accelerate and forms ________?
Electrons
When the electron beam of the CRT is blanked it is called:
Retrace
The ratio of the square of the diameter of the input phosphor to the square of the diameter
of the output phosphor is:
Minification Gain
What is the most important component in a television monitor?
CRT
100% Correct Answers
The edge distortion problem in image intensification tubes is called
Vignetting
The ability of the image intensifier to increase image illumination is:
Brightness Gain
During fluoroscopic image intensification, the primary beam exits the patient and strikes
what part of the II?
Input Screen
Formula for Flux Gain
Flux Gain= Number of output photons / Number of input photons
The photocathode is composed of what type of metals?
Photoemission
Name two types of tv-camera tubes?
Vidicon and Plumbicon
Brightness gain is decreased by as much as _______% per year
10%
Formula for Brightness gain
Brightness Gain = Flux Gain x Minification Gain
, The plumbicon camera tube is best suited for fluoroscopic imaging of what type of
structure?
the heart
An image that displays vingetting will have what appearance at the edges?
dim
Which part of the target assembly of a video camera tube conducts the video signal from
the video camera tube to the TV monitor?
Signal Plate
What shape is the input screen?
Concave
Electrostatic lenses are used to accelerate and forms ________?
Electrons
When the electron beam of the CRT is blanked it is called:
Retrace
The ratio of the square of the diameter of the input phosphor to the square of the diameter
of the output phosphor is:
Minification Gain
What is the most important component in a television monitor?
CRT
