Computer tomography system with a scanogram

Details Computer tomography system with a scanogram Computer tomography system with a scanogram

1989-05-19

1991-10-22

Westin, Edward P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 10, 378 24, 378 21, 378 25, G21K 502, G21K 510

Patent

active

050602462

ABSTRACT:
A computer tomography system includes an X-ray tube having an elongate anode across which a beam spot can be displaced, a scanogram being formed by correctly shifting the profiles measured in the various source positions with respect to one another, followed by superposition. Parts of the object which are situated in a selected layer are thus emphasized in an image, parts of the object which are situated outside the selected layer being blurred. When a point of interest in the object is determined by observation of the scanogram, the same apparatus is used to produce a tomography slice image transverse the scanogram image. An important additional advantage consists in that the permissible power to be applied to the X-ray source may be higher. Furthermore, a scanogram thus obtained is not necessarily disturbed by the failure of one or more detectors.

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patent: 4570264 (1986-02-01), Liebetruth
patent: 4766603 (1988-08-01), Okabe et al.
patent: 4926452 (1990-05-01), Baker et al.

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