The present invention is directed towards an X-ray people screening system capable of rapidly screening people for detection of metals, low Z materials (plastics, ceramics and illicit drugs) and other contraband which might be concealed beneath the person's clothing or on the person's body. In an exemplary...http://www.google.fr/patents/US7826589?utm_source=gb-gplus-shareBrevet US7826589 - Security system for screening people