An instrument for characterizing tumor tissue includes a broad-band light source, a monochromator for filtering collimated light from the broad-band light source, a scanner for scanning the monochromator through a range of predetermined wavelengths, and a hollow needle including a shaft with a tip on one end and a base on the other end. An optical fiber is positioned within the hollow needle for delivering light from the monochromator through the tip to a desired tissue region, A photodiode is mounted in the shaft and has a light sensitive surface facing outward from the shaft for detecting back-scattered light from the tissue region. The back-scattered light detected by the photodiode is monitored by a computer which records the optical absorption spectrum of light back-scattered from the tissue region at discrete locations in the tissue as the needle is inserted or withdrawn through the mammographically abnormal tissue.
申请公布号
DE69414482(D1)
申请公布日期
1998.12.17
申请号
DE1994614482
申请日期
1994.07.14
申请人
GENERAL ELECTRIC CO., SCHENECTADY, N.Y., US
发明人
TIEMANN, JEROME JOHNSON, SCHENECTADY, NEW YORK 12305, US;MARKS, FAY AUDREY, WATERFORD, NEW YORK 12188, US