X-ray computed tomographic apparatus

Details X-ray computed tomographic apparatus X-ray computed tomographic apparatus

1984-11-16

1986-08-12

Church, Craig E.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378110, 378112, 378113, A61B 600, G03B 4116, H05G 160

Patent

active

046060626

ABSTRACT:
An X-ray control device is held in a constant position relative to an X-ray tube and an X-ray detector, while the X-ray tube is moved toward or away from the rotational scanning axis at which an object to be examined is located. The X-ray control device allows selection of a spot size and a tube voltage of the X-ray tube. The X-ray control device is controlled in synchronism with a shift mechanism. When the X-ray tube is close to the object, a smaller spot and a higher tube voltage than those when the X-ray tube is separated from the object are selected.

REFERENCES:
patent: 4115696 (1978-09-01), Truscott
patent: 4134020 (1979-01-01), Zonneveld
patent: 4200799 (1980-04-01), Saito
patent: 4464777 (1984-08-01), Machida

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