Apparatus and method for nondestructive optical constant imaging of dermatosis tissue of human body

Abstract

The invention relates to a device for carrying out the nondestructive optical constant imaging of a human body cutis pathologic tissue and a method thereof. The device comprises a tungsten halogen lamp, an incident fiber optic probe, a line array CCD for receiving diffused reflection light, and a grating spectrograph, an amplification filter circuit, an A / D conversion circuit, a computer and a computer-controlled three-dimensional traveling table which are connected in turn through an optical fiber. The invention uses the line array CCD optical measurement device detecting the obliquely incident diffused reflection light to detect the human body cutis tissue, uses a Monte Carlo statistical method limited by characteristic parameters to conversely compute the values of the absorption coefficient and the reduction scattering coefficient at each two-dimensional space coordinates of the detected cutis tissue, then uses the grating spectrograph to carry out spectrum, and respectively images through the absorption coefficient and the reduction scattering coefficient and simultaneously detects the detected human body pathologic tissue and a healthful tissue around the pathologic tissue. Then the optical constants of the pathologic tissue and the healthful tissue are compared to see difference or the optical constant of the pathologic tissue is compared with a healthful human body tissue sample, thereby carrying out the diagnosis and identification of diseases.

Description

technical field [0001] The present invention relates to a device and method for diagnosing the lesion degree of human skin tissue, to be precise, it relates to a method of non-destructive optical constant imaging of human skin lesion tissue, and then by comparing the optical properties of healthy tissue, to diagnose and quantitatively judge human skin tissue The device and method for detecting lesion degree can also be used to determine the dose of skin tissue laser physiotherapy or laser surgery through the obtained optical constants including absorption coefficient and reduced scattering coefficient, which belong to the field of biomedical imaging technology. Background technique [0002] The interaction between near-infrared light (wavelength 600nm ~ 1000nm) and biological tissue is mainly characterized by weak absorption and strong scattering. After the light in this band is irradiated on the surface of biological tissue, it will penetrate to a certain depth and then be ...

AI Technical Summary

Problems solved by technology

However, the shortcomings of this technology are also very obvious, because it uses diffuse light intensity for imaging, and light intensity is a relative value, and there is no definite intensity value for reference between diseased tissue and healthy tissue

Therefore, the intensity image can only qualitatively diagnose the disease, and it is difficult to judge the degree of diseased tissue, resulting in a high rate of clinical misdiagnosis and missed diagnosis.

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