Patent ID: 6757354
Filing Date: 2004-06-29
Classification: G01B,G01N,Y10S

Abstract:
An apparatus for measuring internal structures of a body, the apparatus comprising:two or more sources of electromagnetic radiation, with some of said sources separated from a first said source by less than 120 degrees of arc, and two or more arrays of detectors, each of said arrays paired with a corresponding source and disposed apposite from the corresponding source, the detectors of each array being arranged adjacent one to another and each capable of outputting a signal indicative of the level of radiation received from the corresponding source, wherein the corresponding sources and arrays are disposed so that the body is passed between them in a manner that attenuates the radiation received by the arrays; and a computer programmed to measure a difference in the output signal of adjacent detectors, thereby estimating a line between sources and detectors, which is tangent to a boundary of the internal structures of the body, and modeling from the estimated tangent line an approximate shape of the boundary of the internal structures.