X-ray radiation is generated at a target that emits x-ray radiation in response to being struck by accelerated electrons, the electrons being emitted by a cathode that emits electrons in response to being illuminated by electromagnetic radiation from a source, and the x-ray radiation is moved by orienting...http://www.google.es/patents/US7864924?utm_source=gb-gplus-sharePatente US7864924 - Scanning X-ray radiation
