This invention relates to a method and an apparatus, primarily a radiation imaging apparatus and an array of coded aperture masks, for use in diagnostic nuclear medicine. The coded aperture masks are fitted with radiation attenuation tubes, each of which extends from each side of the mask in the direction...http://www.google.es/patents/US7915590?utm_source=gb-gplus-sharePatente US7915590 - Method and apparatus for radiation imaging
