PART 3 - HISTORY Flashcards
Who invented the Crookes tube?
Sir William Crookes
An Englishman from a humble background who was a self-taught genius.
What are cathode rays also known as?
Electrons
What significant discovery did Wilhelm Roentgen make while using a Crookes tube?
X-rays
On what date did Roentgen discover X-rays?
November 8, 1895
What material was used to coat the plate that glowed during Roentgen’s experiment?
Barium platinocyanide
What is fluorescence?
The emission of visible light only during stimulation
What does the ‘X’ in X-rays stand for?
Unknown
What was the first medical X-ray image produced by Roentgen?
An image of his wife’s hand
What are the three general types of X-ray examinations?
- Radiography
- Fluoroscopy
- Computed Tomography
What is the purpose of radiography?
Uses film or a solid-state image receptor to provide fixed images
How does fluoroscopy differ from radiography?
Provides moving images on a television monitor or flat panel display
What is the function of computed tomography?
Uses a rotating x-ray source and detector array
Who demonstrated the use of a radiographic intensifying screen?
Michael Pupin in 1896
What did Thomas A. Edison develop in 1896?
Fluoroscope
What was the original fluorescent material used in early X-ray technology?
Barium Platinocyanide
Who was the first X-ray fatality in the United States?
Clarence Dally
What did William Rollins demonstrate?
The first application of collimation and filtration
What innovation did H.C. Snook introduce in 1907?
Interrupterless transformer
Who introduced the Coolidge X-ray tube?
William D. Coolidge in 1913
What did Gustav Bucky invent in 1913?
The stationary grid
What is the Potter-Bucky grid?
A moving grid introduced in 1921
What does ALARA stand for?
As Low As Reasonably Achievable
Fill in the blank: The use of a fluorescent intensifying screen helped reduce exposure times from __________.
30 minutes or longer
