SCRIPT 2026 COMPLETE QUESTIONS AND
CORRECT ANSWERS
◉ Who initially discovered x-rays, when was it, and how was it initially
discovered. Answer: -X-rays were initially discovered by Dr. Roentgen
on November 8, 1895 because of their ability to cause fluorescence
(causing certain materials to glow.)
◉ Who invented the fluoroscope, when was it, and what was it used for.
Answer: -It was a device invented by Thomas Edison in 1896 which was
used to visualize the motion of internal structures and fluids
◉ What did first generation fluoroscopes consist of. Answer: -They
consisted of an x-ray tube, table, and a fluoroscopic
screen (referred to as Conventional Fluoroscopy)
◉ Why did the first fluoroscopic exams have to be performed in a
darkened room. Answer: -Because the light from the screen was so faint
, ◉ What was required of radiologists before the first fluoroscopic exams.
Answer: -They had to dark adapt their eyes for 20-30 minutes by
wearing red goggles
◉ What first covered the flourescent screen and why. Answer: -A sheet
of lead glass so the radiologist could look directly at the screen
◉ What does the human eye have the ability to do. Answer: -Adapt to
low levels of illumination
◉ How many types of receptors are within the retina. Answer: -There
are 2 (cones and rods)
◉ Where are cones mostly densely concentrated. Answer: -In the
posterior portion of the retina which is called the fovea centralis
◉ Where do cones function the most effectively. Answer: -In bright light
(they are almost completely blind to low levels of illumination)
◉ What is daylight vision also referred to as. Answer: -Photopic vision
◉ Why are there also some cones sparsely scattered over the rest of the
retina. Answer: -These are used for peripheral vision during daylight