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Radiographic/fluoroscopic imaging system with reduced patient dose and faster transitions between radiographic and fluoroscopic modes

  • US 5,917,883 A
  • Filed: 06/27/1997
  • Issued: 06/29/1999
  • Est. Priority Date: 11/29/1996
  • Status: Expired due to Fees
First Claim
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1. In a diagnostic medical imaging system adapted for radiographic and fluoroscopic examinations of a patient, said system being capable of operating in a fluoroscopic examination mode at a selected fluoroscopic pulse rate employing frame integration at a selected frame integration rate, and in a radiographic examination mode, comprising:

  • means for producing x-rays directed toward an examination region of interest;

    means for receiving x-rays and producing therefrom image information relating to said examination region of interest;

    means for detecting change in said image information relating to said examination region of interest; and

    means responsive to said means for detecting change in said image information for causing a change in radiographic or fluoroscope or imaging operating parameters of said imaging system;

    the improvement wherein said means for causing a change in radiographic or fluoroscopic or imaging operating parameter of said imaging system changes said frame integration rate.

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