Rotational tomographic X-ray apparatus with planigraph function
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United States of America Patent
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-
Oct 11, 1994
Grant Date -
N/A
app pub date -
Apr 27, 1993
filing date -
Apr 30, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A rotational tomographic X-ray apparatus is disclosed as having an X-ray detection surface disposed parallel to a planigraphic plane selected as a subject to be photographed, and comprising a mechanism for linearly moving the X-ray generator and the X-ray detection surface of the apparatus in relatively opposite directions parallel to the planigraphic plane with the head of a patient positioned therebetween, and for controlling the irradiation direction of X-rays so that the irradiated X-rays always pass the same specific region in the planigraphic plane and are incident on the X-ray detection surface in synchronization with the linear movement. With this apparatus, clear planigraphic photographing with no distortion is possible and the magnifying ratios of X-ray images can be changed easily.
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