Automatic exposure control system for tomographic applications

Details Automatic exposure control system for tomographic applications Automatic exposure control system for tomographic applications

1994-05-19

1995-07-11

Porta, David P.

X-ray or gamma ray systems or devices

Electronic circuit

X-ray source power supply

378112, 378 21, H05G 138

Patent

active

054328330

ABSTRACT:
An automatic exposure control system which regulates the power supplied to an x-ray source of a tomographic apparatus is disclosed. The system includes an x-ray source movably opposing an ionization chamber with a sweeping mechanism and a control for controlling the mechanism. A microprocessor which receives an input reference voltage and combines the voltage with a signal generated by the control to thereby produce a reference signal. This reference signal is then compared with a signal detected by the ionization chamber to determine an output error signal. Power supplied to the x-ray source is then adjusted based on this error signal.

REFERENCES:
patent: 4748649 (1988-05-01), Griesmer et al.
patent: 4831260 (1989-05-01), DiBianca

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