Tomographic apparatus for the production of transverse layer ima

Details Tomographic apparatus for the production of transverse layer ima Tomographic apparatus for the production of transverse layer ima

1980-10-14

1982-08-17

Smith, Alfred E.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 9, 378 14, 378 19, A61B 600

Patent

active

043451586

ABSTRACT:
In an exemplary embodiment, a radiation measuring arrangement has two x-ray tubes of different radiation energy which generate radiation beams penetrating the radiography subject, and also has a radiation receiver which determines the radiation intensity behind the subject. The radiography subject is irradiated from different directions. A computer determines, for every image point, the attenuation coefficient for every radiation energy and determines therefrom the mean ordinal number and the density. The radiation receiver is designed as a stationary detector ring. For scanning only the x-ray tubes are rotated about the radiography subject. They are maintained at such a distance from one another that no detector element is simultaneously impinged upon by both radiation beams.

REFERENCES:
patent: 3971948 (1976-07-01), Pfeiler et al.
patent: 4057725 (1977-11-01), Wagner
patent: 4149081 (1979-04-01), Seppi

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