Lunar Corporation

Ge-lunar Corporation

Robert A Washenko

Richard B Mazess

David L Ergun

James Wear

Joseph P Bisek

Daniel Robert Lenz

Randall K Payne

An energy discriminator, for distinguishing between high and low x-ray energies in a energy sensitive x-ray machine divides high energies into asymmetric regions. The flux rates in each of the asymmetric regions being used to locate the high-energy region in the appropriate high-energy location even in regions of spectral monotonicity. Because two clearly defined spectral peaks need not be present for accurate location of spectral regions in the output of the detector, less filtering and lower tube loading is required.

Multi-energy x-ray machine with reduced tube loading

A scanning densitometer provides transverse scanning of the patient with a small angle fan beam to significantly reduce parallax and image overlap blurring. Additional reduction of artifacts in the region of combined scans is obtained by a varying overlap of the scans when they are merged determined by a best matching of an identified structure within the scan. The matching process which reveals an ideal overlap provides height data of the structure allowing correction of magnification for structures which change in height within the patient over the scan.

Transverse scanning densitometer

Growing community of inventors

Madison, WI, United States of America

Robert A Washenko