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:
May. 01, 1979
Filed:
Mar. 27, 1978
Robert L Burbury, South Elgin, IL (US);
Other;
Abstract
An improved collimator control and cassette position monitor for a diagnostic X-ray system. The system includes a position sensing cassette holder or tray which produces a pair of analog voltages corresponding to a long and a cross edge of a cassette in the holder. The collimator control includes a plurality of window detectors for comparing the analog voltages against fixed references corresponding to standard cassette sizes properly centered. If the cassette is properly centered a window detector for the long and for the cross edge will be satisfied, and the digital signals produced by those detectors will control the collimator servo system to establish the X-ray field size. If the cassette is not properly centered either or both of the long and cross window detectors will fail to produce an output. The system will respond to that condition by disabling the X-ray generator and providing a cassette position fault indication, thereby informing the operator to check the cassette position in the holder. The system minimizes the number of repeat exposures and thereby the radiation dosage to a patient.