Rotational tomographic X-ray apparatus with planigraph function

Details Rotational tomographic X-ray apparatus with planigraph function Rotational tomographic X-ray apparatus with planigraph function

1993-04-27

1994-10-11

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Dental panoramic

378 38, 378 40, A61B 614

Patent

active

053553985

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.

REFERENCES:
patent: 3673408 (1972-06-01), Moss
patent: 4242585 (1980-12-01), Yamano
patent: 4365340 (1982-12-01), Nishikawa et al.
patent: 4847881 (1989-07-01), Heubeck
patent: 4920573 (1990-04-01), Rhodes et al.
patent: 5093852 (1992-03-01), Nishikawa et al.

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