creator Wernick, Miles N. creator Yang, Yongyi A method for detecting a mass density image of an object. An x-ray beam is transmitted through the object and a transmitted beam is emitted from the object. The transmitted beam is directed at an angle of incidence upon a crystal analyzer. A diffracted beam is emitted from the crystal analyzer onto a detector and digitized. A first image of the object is detected from the diffracted beam emitted from the crystal analyzer when positioned at a first angular position. A second image of the object is detected from the diffracted beam emitted from the crystal analyzer when positioned at a second angular position. A refraction image is obtained and a regularized mathematical inversion algorithm is applied to the refraction image to obtain a mass density image. Submitted by Aric Ahrens (ahrens@iit.edu) on 2012-03-20T15:52:22Z No. of bitstreams: 1 7469037.pdf: 217975 bytes, checksum: 04032f445b89572037184cb398f4f29b (MD5) Made available in DSpace on 2012-03-20T15:52:22Z (GMT). No. of bitstreams: 1 7469037.pdf: 217975 bytes, checksum: 04032f445b89572037184cb398f4f29b (MD5) Previous issue date: 2008-12-23 Illinois Institute of Technology 2012-03-20 2008-12-23 7,469,037 http://hdl.handle.net/10560/2663 en United States Patent Patent reformatted digital application/pdf No Copyright - United States http://rightsstatements.org/page/NoC-US/1.0/ Open Access