Patent ID: 6107101
Filing Date: 2000-08-22
Classification: G01N,Y10T

Abstract:
A method for determining a concentration of a photosensitizing drug in a patient, for PhotoDynamic Therapy treatment of said patient by a treatment light at a treatment light wavelength, said method comprising the steps of:drawing a tissue sample from said patient;powderizing said tissue sample;extracting any photosensitizing drug contained therein from said powderized tissue sample to form an extract;irradiating said extract with an interrogation light in an interrogation wavelength range of an absorption band, of said photosensitizing drug, bluer than said treatment light wavelength;measuring a magnitude of an emission signal at said treatment light wavelength, said emission signal caused by said irradiation of said extract; andcomparing said measured magnitude to a magnitude/concentration calibration curve to determine the concentration of said photosensitizing drug.