Planigraphic X-ray apparatus
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United States of America Patent
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-
Apr 9, 1996
Grant Date -
N/A
app pub date -
Nov 1, 1994
filing date -
Nov 12, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A planigraphic X-ray apparatus comprising a rotation mechanism for rotating a support member which supports an X-ray generator and an X-ray detection surface to rotate the X-ray generator and the X-ray detection surface around a subject, a position adjustment mechanism for setting the position of the rotation center of the support member rotated by the rotation mechanism and a linear movement means for moving the support member in the direction approximately perpendicular to the direction of the X-ray irradiated from the X-ray generator, whereby the X-ray detection surface is driven in the direction opposite to the movement of the linear movement means and the X-ray generator is rotated toward the X-ray detection surface in synchronization with the movement of the linear movement means. The position adjustment mechanism and the rotation mechanism are used only to set the position and direction of the support member with respect to the subject, and planigraphic photographing is possible only by moving the support member using a linear movement means exclusively provided for the support member, thereby facilitating the positioning operation of the support member with respect to a given planigraphic plane, simplifying the control program and making the entire apparatus compact and inexpensive.
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