X-Ray Image Intensifiers
Up to 1930’s, the main emphasis was in the field of x-ray sources. We may recall the Introduction of the heated filament by Coolidge and of x-ray and shockproof shields together with the rotating anode by Bouwers.
The next ten years can be characterized by improved control of x-ray quality and contrast through better high-voltage generators, giving a more selective choice of exposure-determining factors.
Since the last world war, the mechanical development in stands and tables has led to a better handling of the patient.
The fourth period, in which radiology has been revolutionized more than in any of the preceding periods, and which has still not reached its climax, will be known as the era of image intensification.
KeywordsModulation Transfer Function Image Intensifier Exposure Rate Primary Screen Quantum Detection Efficiency
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