초록 ▼

A method of imaging for enhancing detection of cracks or flaws in an object using penetrating radiation is disclosed wherein a contrast medium is applied to an object before illumination and scatter radiation is detected from the object. This is achieved by employing a flying spot scanner and a back

A method of imaging for enhancing detection of cracks or flaws in an object using penetrating radiation is disclosed wherein a contrast medium is applied to an object before illumination and scatter radiation is detected from the object. This is achieved by employing a flying spot scanner and a backscatter imaging technique allowing imaging of objects which are not completely accessible, e.g. imaging the object where only one side accessible.

대표청구항 ▼

A method of imaging for enhancing detection of cracks or flaws in an object using penetrating radiant energy comprising the steps of: (a) providing a beam of penetrating radiant energy and repeatedly sweeping said beam over a line in space, supporting an object for illumination by said beam and prov

A method of imaging for enhancing detection of cracks or flaws in an object using penetrating radiant energy comprising the steps of: (a) providing a beam of penetrating radiant energy and repeatedly sweeping said beam over a line in space, supporting an object for illumination by said beam and providing relative motion between said object and said line in space, (c) providing a radiation detector responsive only to scattered energy from said object as a consequence of its illumination by said beam of penetrating radiant energy, (d) applying a contrast medium to said object prior to said illumination, said contrast medium selected as one with atomic number significantly different from an atomic number characterizing said object so as to provide contrast in a scatter image, and (e) using signals produced by said radiation detector to develop an image representing cracks or flaws within which said contrast medium has accumulated.