Patent ID: 6192105
Filing Date: 2001-02-20
Classification: H05G

Abstract:
A device for calibrating an automated exposure control (AEC) device in an x-ray imaging system, said AEC device generating an AEC output signal and said x-ray imaging system comprising an x-ray generating device for generating x-rays and screen means for converting x-rays into light which can be sensed by photosensitive films in an image sensing location, said device for calibrating comprising:photodetector means for detecting light in the image sensing location and generating a detector signal indicative of the light being detected;determining means for receiving the detector signal and the AEC output signal and determining if the detector signal corresponds to a desired detector output; andwherein the photodetector means detects light generated by the screen means when the x-ray generating device is generating x-rays;wherein, for a first set of predetermined conditions of the imaging system, the x-ray generating device generates x-rays and the determining means determines a first target AEC output which corresponds to the AEC output signal which is generated by the AEC device when the detector signal corresponds to the desired detector output; andwherein the first target AEC output corresponds to the AEC output signal for a proper exposure of photosensitive films when the imaging system has the first set of predetermined conditions.