X-Ray imaging diagnostic apparatus with low X-ray radiation

Details X-Ray imaging diagnostic apparatus with low X-ray radiation X-Ray imaging diagnostic apparatus with low X-ray radiation

1979-03-30

1980-07-01

Church, Craig E.

Radiant energy

Luminophor irradiation

250402, 358111, G03B 4116

Patent

active

042108128

ABSTRACT:
An X-ray imaging diagnostic apparatus emitting a low X-ray radiation dose is disclosed as comprising an X-ray generating source for exposing an object, an optical system having a fluorescent screen for receiving the X-ray image at an aperture portion thereof, a high sensitivity imaging device coupled directly to the optical system and receiving an X-ray image from the fluorescent screen for radiographing the X-ray image, a control unit for amplifying the output from the high sensitivity imaging device and for controlling the exposure time of X-ray radiation emitted from the X-ray generating source, an image storing memory circuit connected to the control unit for storing an image signal therefrom and a monitor circuit for displaying the image signal. The exposure time of the X-ray generating source is controlled to be at most less than 1/100 second by the control unit and the image of an object obtained on the fluorescent screen is imaged with a high resolution and a high sensitivity so that the resultant image can be recorded and monitored. The exposure time of the X-ray radiation is decreased as low as possible by using the high sensitivity imaging device, so that an X-ray radiation dose applied to a human body is lowered as compared to conventional X-ray diagnostic apparatus.

REFERENCES:
patent: 3622785 (1971-11-01), Irwin
patent: 3745245 (1973-07-01), Yunde
patent: 4137454 (1979-01-01), Brandon

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