X-ray or gamma ray systems or devices – Electronic circuit – With display or signaling
Patent
1993-03-26
1995-09-26
Church, Craig E.
X-ray or gamma ray systems or devices
Electronic circuit
With display or signaling
378 982, H05G 164
Patent
active
054540224
ABSTRACT:
An image sensor, which is useful with a base image system, for use in taking an X-ray image of an object, includes a charge coupled device which has capacitors, which when charged by the base system, hold a voltage for a useful period of time which maintains the charge coupled device in a mode in which an X-ray generated image can be recorded therein when the charge coupled device is not directly electrically connected to the base image system. The charge coupled device is encapsulated in a material which is opaque to light but is transparent to X-rays. The image sensor has electrical contacts which are used to connect it to the base image system before and after but not during a time an X-ray image of an object is being recorded by the charge coupled device. A method of taking a dental X-ray involves placing the charge coupled device image sensor in direct electrical contact with a base image system to set the image sensor to a mode in which an image can be recorded therein. The charge coupled device is then removed from the base image system and is then placed in the mouth of a person at one side of teeth to be X-rayed. X-rays are then directed into the mouth of the person, through the teeth, and onto the charge coupled device image sensor to generate in the charge coupled device image sensor an electronic image of the teeth. The image sensor is then removed from the mouth of the person and placed back into direct electrical contact with the base image system. An output signal from the base image sensor is connected to a display unit so as to provide a visual image of the object.
REFERENCES:
patent: 4652926 (1987-03-01), Withers et al.
patent: 4796183 (1989-01-01), Ermert et al.
patent: 4891829 (1990-01-01), Deckman et al.
patent: 4982415 (1991-01-01), Shibata et al.
Philips Medical Systems, sales publication, "Visualaix The New Way to Take Dental X-rays".
Lee Teh-Hsuang
Toohey William J.
Church Craig E.
Eastman Kodak Company
Leimbach James D.
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