发明名称 |
X-Ray imaging diagnostic apparatus with low X-ray radiation |
摘要 |
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.
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申请公布号 |
US4210812(A) |
申请公布日期 |
1980.07.01 |
申请号 |
US19790025466 |
申请日期 |
1979.03.30 |
申请人 |
FOUNDATION ASSN OF JAPAN GENERAL DENISTRY |
发明人 |
ANDO, SHOICHI;INABA, KIMINOBU;YOSHIDA, TOMOAKI |
分类号 |
A61B6/14;H05G1/38;H05G1/64;(IPC1-7):G03B41/16 |
主分类号 |
A61B6/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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