Patent ID: 7054674
Filing Date: 2006-05-30
Classification: A61B,G01N

Abstract:
1. A method of monitoring the presence of one or more chromophores in a sample of biological tissue, which method comprises: illuminating an area of such tissue sample by projecting light from a light source; receiving light remitted by the illuminated area of tissue at a photo-receptor; spectroscopically analyzing the light projected from the light source and the remitted light received by the photo-receptor and utilizing said analysis to generate data indicative of differences between light projected from the light source and the remitted light; using the generated data to define a parameter of the tissue; processing the generated data using a predictive mathematical model of the optical properties of the biological tissue to normalize the defined parameter defined by the generated data to a standard value of that parameter; and measuring at least one further parameter of the tissue using said processed data processed to normalize the defined parameter defined by the generated data to a standard value.