Patent Document ID: 4149081
Application ID: 05745709
Patent Flag: 1

Claim One:
1. A tomographic apparatus for graphically reproducing information from an object slice comprising: at least one source of penetrating radiation positioned to direct said radiation at the object; at least one detector responsive to radiation, each said detector positioned to receive said radiation after passage through the object for producing an output signal corresponding to said radiation at said detector; means coupled to said detector(s) for referencing said output signals to a series of test data derived from actual test measurements of objects having known attenuation characteristics, said referencing means producing intermediate signals, wherein said referencing means includes means to discriminate so that each of said facsimiles is representative of the distribution of a combination of atomic charge and electron density at each point within said object, wherein said combination is preselected based upon the application of an error function; and means for reconstructing said intermediate signals into at least two separate facsimiles, each of which is representative of a different distribution of the degree of attenuation within said object.