Patent ID: 6023637
Filing Date: 2000-02-08
Classification: A61B,Y10S

Abstract:
An imaging system, comprising:a scanning subsystem for generating digital data corresponding to intensity levels of infrared radiation from a scanned area of a patient's body;a processor, coupled to said scanning subsystem to receive said digital data, for processing said data to generate image data reflecting metabolic activity internal to the patient's body beneath the scanned surface areas;a display system for generating a display corresponding to said image data;a control system, coupled to said processor, said display system, and said scanning subsystem, for facilitating user control of said imaging system;wherein said processor assigns color values from a predetermined range within a spectrum of color values to each unit of said digital data, such that different infrared radiation intensity levels are assigned different color values;and wherein said color values comprise said image data, such that when said imaging system generates a display corresponding to said image data, different colors on said display correspond to different radiation levels in said scanned area;and wherein said digital data lies within an input window of intensity values, said input window having a minimum IW.sub.MIN and a maximum IW.sub.MAX ;and wherein said processor assigns said data values to color values by(a) defining in said input window an output window of data values between a maximum output data value OW.sub.MAX and a minimum output data value OW.sub.MIN, where OW.sub.MAX is less than or equal to IW.sub.MAX, OW.sub.MIN is greater than or equal to IW.sub.MIN, and said output intensity window is smaller than said input intensity window;(b) mapping said output intensity window of color values to said spectrum of color values such that OW.sub.MAX is mapped to a highest color value in said spectrum of color values and OW.sub.MIN and is mapped to a lowest color value in said spectrum of color values, with all data values between OW.sub.MAX and OW.sub.MIN being evenly mapped to color values between said highest and lowest color values in said color spectrum;(c) assigning color values to said data values in accordance with said mapping in step (b);and wherein said control system is adapted to enable a user to dynamically adjust OW.sub.MAX and OW.sub.MIN such that sub-surface metabolic activity may be observed on said display.