| 摘要 |
A method and apparatus for detecting the presence of cancerous tissue using fluorescence. The tissue under examination which has absorbed Hematoporphyrin Derivative (HpD) is excited with a beam of coherent light from a diode laser flashed to the body through a fibre optic probe assembly. The fluorescence spectrum and image, as well as normal image from the tissue under examination, are transmitted through the same probe assembly and collected by associated detectors and processor for analysis. The fluorescence spectrum and superimposed normal image and fluorescence image are observed simultaneously on a TV monitor to determine the presence of cancer and its extend, based on the knowledge that the fluorescence spectrum of cancerous tissue is substantially different from normal tissue. <IMAGE> |
