The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 1995
Filed:
Feb. 11, 1993
Applicant:
Inventors:
Jay R Knutson, Kensington, MD (US);
Alexander Knuttel, Rockville, MD (US);
Joseph M Schmitt, Rockville, MD (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B / ; A61B / ;
U.S. Cl.
CPC ...
356349 ; 128633 ; 128665 ; 1286531 ; 356345 ;
Abstract
An apparatus and method for using frequency modulated diffusive photon-density waves propagating through a turbid medium such as tissue for detecting optical properties of objects and for imaging objects within the turbid medium. Frequency modulation enables real time differential measurement of the interaction of different colors with the object when the different colors are chosen such that they react the same with the medium but differently with the object. The method greatly simplifies optical imaging and increases the amount of information which may be obtained about the object.