Device for computer tomography

Details Device for computer tomography Device for computer tomography

1978-08-30

1980-09-30

Smith, Alfred E.

Radiant energy

Inspection of solids or liquids by charged particles

Analyte supports

250252, A61B 600, A61B 602, G01D 1800, G12B 1300

Patent

active

042257891

ABSTRACT:
A device for computer tomography, comprising an X-ray source, a number of X-ray detectors and a signal processing network which includes a comparator for comparing detector output signals with data obtained during measurement of a calibration material and stored in a memory. The comparator determines, by way of interpolation, the thicknesses of calibration material which correspond to detector output signals and provides computer input signalswhich are a function of these thicknesses. By means of these computer input signals, an image of the density distribution of an irradiated patient is calculated. This image is free from interference patterns caused by differences between the detectors, by non-linearity of the detectors or by hardening of the radiation.

REFERENCES:
patent: 3778614 (1973-12-01), Hounsfield
patent: 3965358 (1976-06-01), Macovski
patent: 4029963 (1977-06-01), Alvarez et al.
patent: 4035647 (1977-07-01), Hounsfield et al.
patent: 4124799 (1978-11-01), Schittenhelm
patent: 4149081 (1979-04-01), Seppi

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