Method and apparatus for obtaining a selectable contrast image i

Details Method and apparatus for obtaining a selectable contrast image i Method and apparatus for obtaining a selectable contrast image i

1989-12-20

1991-04-09

Church, Craig E.

X-ray or gamma ray systems or devices

Electronic circuit

X-ray source power supply

378111, H05G 132

Patent

active

050070738

ABSTRACT:
The invention provides a method and apparatus for obtaining a selectable contrast image in an X-ray exposure. The method comprises applying a controlled high voltage to an X-ray tube in response to a controlled invertor-generated voltage; generating the controlled invertor-generated voltage; driving the invertor in response to a KV control signal; comparing a KV feedback signal with a KV reference signal for developing said KV control signal, and selecting any of a plurality of variable level reference signals as the KV reference signal. The apparatus comprises means for carrying out the foregoing method.

REFERENCES:
patent: 4439868 (1984-03-01), Makino et al.
patent: 4797908 (1989-01-01), Tanaka et al.
patent: 4831642 (1989-05-01), Chattin
patent: 4851983 (1989-07-01), Chattin

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