Coded aperture, the radiation imaging apparatus, visibility limiting method of coded aperture and the radiation imaging methods

摘要

Method and apparatus for use in diagnostic nuclear medicine, the present invention relates to an array of coded aperture mask and radiation imaging device primarily. The coded aperture mask, radiation attenuation tubes, each of which extends in the direction of the mask opening from both sides of the mask are attached. The tube is prepared from the lead, and has parallel sides. Mask is formed for use gamma rays, it is prepared from tungsten having a thickness of 1~2mm.