Radiodiagnosis apparatus of the charge transfer detector type
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United States of America Patent
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Nov 26, 1996
Grant Date -
N/A
app pub date -
May 30, 1995
filing date -
May 31, 1994
priority date (Note) -
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Abstract
A radiodiagnosis apparatus for taking panoramic and tomographic pictures of an object, comprising an X-ray source and an X-ray receiver with a secondary slot for the passage of the received X-rays and downstream of a scintillator screen converting received X-rays into visible light, a sensor for transferring electric charges stored in the image elements from one line to the next one, fixedly mounted in the receiver to have its image zone corresponding to the opening of the secondary slot, means for controlling the charge transfer by the shift of the lines of charge at a frequency simulating the motion of a conventional radiographic film behind the secondary slot and a data processing device, the control means comprising a part movable behind the secondary slot at the speed of a radiographic film and a detector for the speed of that movable part and a unit converting the detected speed into an equivalent frequency of line shift of the charge transfer sensor.
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