X-ray apparatus for panoramic tomography including control system
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United States of America Patent
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-
Nov 8, 1988
Issued Date -
N/A
app pub date -
Sep 9, 1986
filing date -
Sep 13, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Panoramic tomography X-ray apparatus such as for obtaining images of dental systems, comprises a rotatably mounted arm to which the X-ray tube of an X-ray generator and an X-ray film cartridge, along with film transport equipment, are mounted, and a control system for controlling the functioning of the equipment of the apparatus on the basis of control data and a program pre-stored therein. A control system controls the speed of a rotary motion motor that rotates the arm, the speed of the film transport motor and the distribution of those speeds, independently of each other. In this manner, it is possible to photograph dental systems of varying sizes and shapes both sharply and with suitable exposure time. In addition to controlling the speeds of the rotary motion and film transport motors, the control system may also control the anode current and/or the anode voltage of the X-ray generator during the exposure sequence.
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