Fluoroscopy Exam Questions with
All Correct Answers
Why would radiologists wear red goggles to "dark adapt" before fluoroscopic
procedures - Answer- -Because they would filter out blue-green wavelengths
What type of vision was required for the dim fluoroscopic images - Answer- -Rod vision
What 2 problems did having to use rod vision for the first fluoroscopic images lead to -
Answer- -Poor visual acuity and poor ability to detect shades of gray (contrast)
What was developed to produce a bright image to allow the use of cone vision without
giving the patient an
excessive radiation exposure and when was it first developed - Answer- -The image
intensifier in the 1950's
How can dim objects be viewed better - Answer- -With peripheral vision
What is the purpose of angiography - Answer- -To visualize vessels
What is the mA like in fluoroscopy compared to radiography - Answer- -In fluoroscopy
the mA is lower
What structure in the eye can get cataracts caused from radiation - Answer- -The lens
Where are static images taken during fluoroscopy - Answer- -On a spot film
What is visual acuity - Answer- -The ability to perceive fine detail
Where is the x-ray tube in a modern fluoroscopic unit - Answer- -Either under or over
the table
What ocular structure immediately precedes the vitreous humor along the path of
incident light - Answer- -The lens
What is the normal amount of tube current during fluoroscopy - Answer- -Between 1 and
5 mA
What is the bucky slot cover of a fluoroscope - Answer- -A protective device
All Correct Answers
Why would radiologists wear red goggles to "dark adapt" before fluoroscopic
procedures - Answer- -Because they would filter out blue-green wavelengths
What type of vision was required for the dim fluoroscopic images - Answer- -Rod vision
What 2 problems did having to use rod vision for the first fluoroscopic images lead to -
Answer- -Poor visual acuity and poor ability to detect shades of gray (contrast)
What was developed to produce a bright image to allow the use of cone vision without
giving the patient an
excessive radiation exposure and when was it first developed - Answer- -The image
intensifier in the 1950's
How can dim objects be viewed better - Answer- -With peripheral vision
What is the purpose of angiography - Answer- -To visualize vessels
What is the mA like in fluoroscopy compared to radiography - Answer- -In fluoroscopy
the mA is lower
What structure in the eye can get cataracts caused from radiation - Answer- -The lens
Where are static images taken during fluoroscopy - Answer- -On a spot film
What is visual acuity - Answer- -The ability to perceive fine detail
Where is the x-ray tube in a modern fluoroscopic unit - Answer- -Either under or over
the table
What ocular structure immediately precedes the vitreous humor along the path of
incident light - Answer- -The lens
What is the normal amount of tube current during fluoroscopy - Answer- -Between 1 and
5 mA
What is the bucky slot cover of a fluoroscope - Answer- -A protective device
