OPTICAL METHOD FOR DETERMINING MORPHOLOGICAL PARAMETERS AND PHYSIOLOGICAL PROPERTIES OF TISSUE

• Main Authors: JAKOB J STAMNES, MARINA BIRYULINA, ENDRE R SOMMERSTEN, KNUT STAMNES, GENNADY RYZHIKOV, ZHAO LU, KRISTIAN P NIELSEN, BOERGE HAMRE, JOHAN E MOAN
• Format: Patent
• Language: English
• Published: 14.08.2014
• Subjects: CALCULATING; COMPUTING; COUNTING; DIAGNOSIS; HANDLING RECORD CARRIERS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEDICAL OR VETERINARY SCIENCE; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS; SURGERY; TESTING

PROBLEM TO BE SOLVED: To provide an optical method for determining morphological parameters of tissue from spectral reflectance measurements of tissue.SOLUTION: The method comprises the steps of: obtaining a reflection image of a lesion; determining a lesion border from the reflected intensity of the lesion image from a visible light channel; and measuring a size of the lesion. The method further comprises the steps of: obtaining a histogram-width, that gives a measure of inhomogeneity of the reflected intensity of the lesion; capturing a relative moment of inertia of the lesion; and determining a center distance representing a physical distance between a geometrical center of the lesion and a center of mass of absorptance. The method also comprises the steps of: determining a fractal dimension of the lesion which describes the complexity of the lesion border; determining an asphericity of the lesion; and determining a relative border length of the lesion.