Planigraphic X-ray apparatus for the preparation of tomographic

Details Planigraphic X-ray apparatus for the preparation of tomographic Planigraphic X-ray apparatus for the preparation of tomographic

1976-12-16

1977-12-27

Church, Craig E.

Radiant energy

Inspection of solids or liquids by charged particles

Analyte supports

364414, 364515, G03B 4116

Patent

active

040653978

ABSTRACT:
A planigraphic X-ray apparatus for the preparation of transverse tomographic or planigraphic images of an exposure object, which consists of an X-ray measuring arrangement including an X-ray source generating a polyenergetic X-ray beam penetrating through the exposure object, with a radiation receiver which determines the radiation intensity of the X-radiation as a reference value prior to its ingress into the object, and a further radiation receiver which determines the radiation intensity behind the object in the direction of the radiation as attenuated values, through scanning of the projected X-ray beam at sequential equidistant points, a comparator element which forms a measured magnitude from the two values, as well as a drive arrangement for the measuring arrangement, consisting of a pivot mounting for producing rotational movements of the X-ray measuring arrangement through small equidistant angular amounts about a rotational axis generally coincident with the symmetrical longitudinal axis of the exposure object in an alternating sequence with each respective scan and, a measured value converter for the transformation of the measured values into a tomographic image wherein a function stage applies a proximation function to the results obtained with polyenergetic X-ray energy so as to convert the results to values suitable for processing based on the assumption of monoenergetic radiation.

REFERENCES:
patent: 3778614 (1973-12-01), Hounsfield

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