X-Ray diagnostic installation for radiography and fluoroscopy

Details X-Ray diagnostic installation for radiography and fluoroscopy X-Ray diagnostic installation for radiography and fluoroscopy

1981-06-12

1983-08-23

Smith, Alfred E.

X-ray or gamma ray systems or devices

Electronic circuit

X-ray source power supply

378115, H05G 130, H05G 146

Patent

active

044008236

ABSTRACT:
An exemplary embodiment includes a television installation for the transmission of the X-ray image, a dose rate device for supplying a dose rate value during fluoroscopy, and a control circuit for controlling the size of the focus of the X-ray tube, to which at least one dose rate value of the dose rate device is supplied. An X-ray tube is present with at least one control electrode for the determination of the focus size via the electrode potential. The control electrode is connected with the control circuit via a control voltage generator. In the control circuit, data is stored which establishes the focus size at the smallest possible value, in dependence upon the dose rate value, the permissible load of the X-ray tube, and upon radiography values.

REFERENCES:
patent: 1946287 (1934-02-01), Kearsley
patent: 3991314 (1976-11-01), Schmitman
patent: 4158138 (1979-06-01), Hellstrom

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