X-ray diagnostic installation having a solid-state image convert

Details X-ray diagnostic installation having a solid-state image convert X-ray diagnostic installation having a solid-state image convert

1995-09-29

1997-03-04

Porta, David P.

X-ray or gamma ray systems or devices

Electronic circuit

With display or signaling

378 97, 378108, H05G 144

Patent

active

056087756

ABSTRACT:
An x-ray diagnostic installation has a high-voltage generator, an x-ray tube supplied by the high-voltage generator, and a solid-state image converter on which x-rays, attenuated by an examination subject disposed between the x-ray tube and the solid-state image converter, are incident. A control unit is connected to the high-voltage generator and to the solid-state image converter, and controls the high-voltage generator to cause the x-ray tube to emit a first x-ray pulse of a short duration which produces an x-ray exposure in the solid-state image converter. The control unit conducts a read out of the solid-state image converter to obtain a measured value representative of the x-ray dose rate, the control unit using this measured value to calculate the x-ray transparency of the examination subject and, from the x-ray transparency, to calculate an optimum x-ray dose. The control unit then operates the high-voltage generator to cause the x-ray tube to emit a second x-ray pulse, having the optimum x-ray dose, for acquiring a diagnostic image of the examination subject.

REFERENCES:
patent: 4803714 (1989-02-01), Vlasbloem
patent: 4982095 (1991-01-01), Takahashi et al.
patent: 5008915 (1991-04-01), Vlasbloem
patent: 5194736 (1993-03-01), Meulenbrugge et al.
patent: 5379333 (1995-01-01), Toth
patent: 5400378 (1995-03-01), Toth
patent: 5450462 (1995-09-01), Toth et al.

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