Radiographic examination unit - uses predicted signals from various ray receivers to counteract discrepancies in sensitivity

摘要

The X rays from the source are detected after their several passages through the body by a series of receivers, and a compensator unit reduces the effect of discrepancies in the sensitivity of the different receivers, having means for moving the source in relation to them. The output signals from the receivers are delivered to a unit, which uses signals derived from successive receivers as the source and receiver unit take up first and second relative positions. The values of the output signals which should be obtained from adjacent receivers are predicted, and these predicted values are used to compensate for discrepancies in receiver sensitivities.