Patent ID: 8279315

Claim:
A CCD sensor arrangement for use in radiographic imaging, comprising a CCD sensor, which comprises: a detector having an active area comprising pixels that receive charges; a read-out register functionally connected with the active area; means for transferring charges from the active area to the read-out register, at least two read-out wells functionally connected with the read-out register, said at least two read-out wells having different capacities, means for transferring charges from the read-out register to the at least two read-out wells, means arranged in the CCD sensor or in functional connection with the CCD sensor for measuring the signal generated by the charges read out or being read out from said at least two wells, and selection means for deciding during read-out of an individual image from said active area of the CCD sensor, at least partly on the basis of the measured signal representing attenuation of X-ray radiation having penetrated an object being radiographed, whether a read-out well to be used is to be changed.