Fluoroscopy physics Test Questions with Correct Answers (Verified Answers)
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Fluoroscopy physics
Institution
Fluoroscopy Physics
Fluoroscopy physics Test Questions with Correct Answers (Verified Answers)
What are two types of coupling devices? - Answer- Fiber optic (uses fiber optic materials to tie the TV camera tube with the image intensifier tube)
Lens coupling (uses lenses and mirrors to split the incoming signal into ...
Fluoroscopy physics Test Questions
with Correct Answers (Verified
Answers)
What are two types of coupling devices? - Answer- Fiber optic (uses fiber optic
materials to tie the TV camera tube with the image intensifier tube)
Lens coupling (uses lenses and mirrors to split the incoming signal into two signals and
connect the output phosphor of the II to the TV monitor)
What are the advantages and disadvantages of fiber optic coupling devices? - Answer-
Advantage - small, compact and rugged
Disadvantage - cannot use with anything but compatible devices
What are the advantages and disadvantages of lens coupling devices? - Answer-
Advantage - can be used with digital and camera imaging
Disadvantage - large, very fragile
What are the two types of fluoroscopic recording? - Answer- - Cassette-loaded spot film
(The spot film is positioned between the patient and the image intensifier. During
exposure X ray exposes the film.)
- Photospot camera
(Similar to a movie camera but can only expose one frame at a time. Light exposes
film.)
Fluoroscopic x-ray tubes are very similar to diagnostic tubes except that they are... -
Answer- designed to operate for longer periods of time at a much lower mA (.5 - 5)
The tube target must be fixed to prevent an SOD of less than _____ inches. - Answer-
15
What is the typical basic fluoroscopic imaging chain? - Answer- x-ray tube
image receptor (fluoroscopic screen)
What is the magnification for an image viewed with an image intensification tube with an
input screen diameter of 9" that is using a 5" diameter area during magnification? -
Answer- Input screen diameter/diameter of input screen used during magnification
= 9/5
= 1.8 mag
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