Radiant energy – Inspection of solids or liquids by charged particles – Analyte supports
Patent
1980-04-17
1982-04-06
Smith, Alfred E.
Radiant energy
Inspection of solids or liquids by charged particles
Analyte supports
250361R, A61B 600
Patent
active
043237843
ABSTRACT:
In an exemplary embodiment, a measuring arrangement for irradiating the radiography subject from different directions comprises a radiation source which emits a radiation beam which penetrates the layer to be examined, its dimension perpendicular to the layer plane being equal to the layer thickness, and a radiation receiver supplies electrical output signals which correspond to the radiation intensity measured. A computer calculates, from the output signals, the attenuation values of specific image points of the irradiated body layer. Correction devices are provided in the radiation beam with which the radiation quality (mean energy) of the radiation impinging on the receiver is determined, each preferably comprising several detectors arranged in series in the direction of radiation and separated from one another by a luminescent layer. The output signals of the correction detectors serve to correct for the radiation hardening in the patient. Correction detectors according to the disclosure are particularly suitable for use in apparatus with which fluoroscopic layer images capable of being evaluated in medical diagnosis are produced.
REFERENCES:
patent: 4065397 (1981-05-01), Ruhrnschopf et al.
patent: 4247774 (1981-01-01), Brooks
patent: 4260895 (1981-04-01), Schittenhelm
Grigsby T. N.
Siemens Aktiengesellschaft
Smith Alfred E.
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