EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024
Physics Fluoroscopy Exam Questions and
Answers- Updated 2024
The edge distortion problem in image intensification tubes is called - Answer✔✔-Vignetting
The ability of the image intensifier to increase image illumination is: - Answer✔✔-Brightness
Gain
During fluoroscopic image intensification, the primary beam exits the patient and strikes what
part of the II? - Answer✔✔-Input Screen
Formula for Flux Gain - Answer✔✔-Flux Gain= Number of output photons / Number of input
photons
The photocathode is composed of what type of metals? - Answer✔✔-Photoemission
Name two types of tv-camera tubes? - Answer✔✔-Vidicon and Plumbicon
Brightness gain is decreased by as much as _______% per year - Answer✔✔-10%
Formula for Brightness gain - Answer✔✔-Brightness Gain = Flux Gain x Minification Gain
The plumbicon camera tube is best suited for fluoroscopic imaging of what type of structure? -
Answer✔✔-the heart
An image that displays vingetting will have what appearance at the edges? - Answer✔✔-dim
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, EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024
Which part of the target assembly of a video camera tube conducts the video signal from the
video camera tube to the TV monitor? - Answer✔✔-Signal Plate
What shape is the input screen? - Answer✔✔-Concave
Electrostatic lenses are used to accelerate and forms ________? - Answer✔✔-Electrons
When the electron beam of the CRT is blanked it is called: - Answer✔✔-Retrace
The ratio of the square of the diameter of the input phosphor to the square of the diameter of
the output phosphor is: - Answer✔✔-Minification Gain
What is the most important component in a television monitor? - Answer✔✔-CRT
The fluoroscopic x-ray tube and image receptor are connected by what? - Answer✔✔-C-Arm
Where is the best place for the radiographer to stand during fluoroscopy to the patient? -
Answer✔✔-90 degrees
The minimum source to skin distance in mobile fluoroscopy is _____. - Answer✔✔-12 Inches
The ability of a single x-ray photon to be converted to several thousand light photons -
Answer✔✔-Quantum Yield
Fluoroscopy is the domain of whom? - Answer✔✔-Radiologist
An audible resetable alarm is required to indicate how many minutes of fluoroscopy -
Answer✔✔-5 minutes
Page 2/7
Physics Fluoroscopy Exam Questions and
Answers- Updated 2024
The edge distortion problem in image intensification tubes is called - Answer✔✔-Vignetting
The ability of the image intensifier to increase image illumination is: - Answer✔✔-Brightness
Gain
During fluoroscopic image intensification, the primary beam exits the patient and strikes what
part of the II? - Answer✔✔-Input Screen
Formula for Flux Gain - Answer✔✔-Flux Gain= Number of output photons / Number of input
photons
The photocathode is composed of what type of metals? - Answer✔✔-Photoemission
Name two types of tv-camera tubes? - Answer✔✔-Vidicon and Plumbicon
Brightness gain is decreased by as much as _______% per year - Answer✔✔-10%
Formula for Brightness gain - Answer✔✔-Brightness Gain = Flux Gain x Minification Gain
The plumbicon camera tube is best suited for fluoroscopic imaging of what type of structure? -
Answer✔✔-the heart
An image that displays vingetting will have what appearance at the edges? - Answer✔✔-dim
Page 1/7
, EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024
Which part of the target assembly of a video camera tube conducts the video signal from the
video camera tube to the TV monitor? - Answer✔✔-Signal Plate
What shape is the input screen? - Answer✔✔-Concave
Electrostatic lenses are used to accelerate and forms ________? - Answer✔✔-Electrons
When the electron beam of the CRT is blanked it is called: - Answer✔✔-Retrace
The ratio of the square of the diameter of the input phosphor to the square of the diameter of
the output phosphor is: - Answer✔✔-Minification Gain
What is the most important component in a television monitor? - Answer✔✔-CRT
The fluoroscopic x-ray tube and image receptor are connected by what? - Answer✔✔-C-Arm
Where is the best place for the radiographer to stand during fluoroscopy to the patient? -
Answer✔✔-90 degrees
The minimum source to skin distance in mobile fluoroscopy is _____. - Answer✔✔-12 Inches
The ability of a single x-ray photon to be converted to several thousand light photons -
Answer✔✔-Quantum Yield
Fluoroscopy is the domain of whom? - Answer✔✔-Radiologist
An audible resetable alarm is required to indicate how many minutes of fluoroscopy -
Answer✔✔-5 minutes
Page 2/7
