The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 1982
Filed:
Apr. 17, 1980
Bernhard Conrad, Erlangen, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
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.