Patent ID: 6195413
Filing Date: 2001-02-27
Classification: G01N

Abstract:
In a method for detecting X-rays where individual energy ranges are simultaneously radiated onto an object to be X-rayed and are thereby weakened and the weakened X-ray beams are separated into a low-energy range and a high-energy range by passing the weakened X-rays through sequentially arranged first low-energy range and high-energy range detectors to provide respective low-energy and high-energy signals, the improvement comprising: providing a further low-energy signal (FX.sub.2) that also represents the low-energy range of the weakened X-ray beam (FX') from a second low energy detector; and using the further low-energy signal to compute the high-energy shares absorbed in the low energy range out of the low-energy signal (FX.sub.1) provided by the first low-energy range detector to provide an improved low-energy range signal.