X-ray examination apparatus including an exposure control system

Details X-ray examination apparatus including an exposure control system X-ray examination apparatus including an exposure control system

1998-04-16

2000-04-04

Bruce, David V.

X-ray or gamma ray systems or devices

Electronic circuit

With display or signaling

378 988, 378 9812, H05G 164

Patent

active

060470437

ABSTRACT:
An X-ray examination apparatus includes an X-ray detector (1) for deriving an image signal from an X-ray image and an exposure control system (2) for adjustment of the X-ray examination apparatus. The exposure control system includes an arithmetic unit (4) for forming a histogram of brightness values of the X-ray image and for deriving therefrom an image component which relates mainly to brightness values representing relevant image information. The exposure control system is arranged to adjust the X-ray examination apparatus on the basis of the image component.

REFERENCES:
patent: 5012504 (1991-04-01), McFaul et al.
patent: 5461658 (1995-10-01), Joosten
patent: 5574764 (1996-11-01), Granfors et al.
patent: 5675624 (1997-10-01), Relihan et al.
patent: 5694449 (1997-12-01), Aragones

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