X-ray or gamma ray systems or devices – Source – Electron tube
Patent
1989-05-03
1991-01-15
Howell, Janice A.
X-ray or gamma ray systems or devices
Source
Electron tube
378 38, 378 40, 378 11, A61B 602, A61B 614
Patent
active
049859072
ABSTRACT:
Dental X-ray apparatus for panoramic tomography in which an X-ray source and X-ray detection means are carried by a moving mechanism for panoramic imaging movements including translation and rotation of the X-ray source and of the detection means with respect to an object to be examined. The panoramic movements are controlled by data momentally supplied from a microcomputer for two individual translation movements in a plane and for rotation movement about an axis perpendicular to that plane.
REFERENCES:
patent: 4039839 (1977-08-01), Ohta et al.
patent: 4241254 (1980-12-01), Valila 378 40
Howell Janice A.
U.S. Philips Corporation
Wong Don
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