Fluoroscopy Exam Questions and
Answers- Updated 2024
Who invented the fluoroscope? - Answer✔✔-Thomas Edison
When was the fluoroscope invented? - Answer✔✔-1896
What are the two types of light receptors in the eyes? - Answer✔✔-Rods and cones
Which type of vision requires bright light or daylight? - Answer✔✔-Cone vision/photopic
Which vision has excellent spatial resolution? - Answer✔✔-Cone vision
Which type of vision requires dim light or complete darkness - Answer✔✔-Rod vision/ scotopic
vision
Which vision is color blind? - Answer✔✔-Rod vision
Who invented the image intensifier? - Answer✔✔-Bell laboratories
Why was the image intensifier made? - Answer✔✔-To increase brightness of image so that the
image could be viewed with cone vision
What is fluoroscopy? - Answer✔✔-Dynamic imaging modality designed to observe moving
structures in the body
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When is fluoroscopy currently used? - Answer✔✔-For examinations that require observation if
physiologic functions such as the movement of barium through GI tract
What are the rooms that also have an overhead tube for conventional radiography called? -
Answer✔✔-"R and F" rooms
What are typical fluoroscopic tube currents? - Answer✔✔-0.5 to 5 mA
What does a radiographic tube current operate at? - Answer✔✔-50 to 500 mA
For fluoroscopy what type of mA and kVp is usually used? - Answer✔✔-High kVp low mA
Where is the fluoroscopic tube usually located? - Answer✔✔-Beneath the patient support table
The source to skin distance if a fixed fluoroscopic tube must be at least what? - Answer✔✔-38
cm (15 inches)
For a c-arm the source to skin distance must be at least? - Answer✔✔-30 cm (12 inches)
How much lead equivalent must the lead drape of the image intensifier tower be? - Answer✔✔-
0.25 mm lead equivalent
Where is the tv camera mounted? - Answer✔✔-On top of the image intensifier tower
Where is the tower connected? - Answer✔✔-To the x-ray tube mount
What does the image intensifier do? - Answer✔✔-Increases brightness of image
How much can modern image intensifiers increase brightness? - Answer✔✔-8000 times
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