Rapid Screening Disease By Spectroscopy Of Tongue Inspection

Tongue inspection as a part of traditional Chinese medicine plays an important role in diagnosis of disease. With the development of the technology, tongue characterization received wide attention, but has made little progress in recently few decades. The main reason is that these researches which were limited to tongue color measurement didn’t analysis tongue information as a whole. In order to solve the shortage of the above research methods, this paper argues that: the research that can make tongue characterization come true should not only from the basis features of the traditional Chinese medicine, but also make the techonolgy as a basic tool to develop more tongue information. A method based on spectroscopy and hyperspectral for tongue inspection on rapid screening disease was present in this research. Comparing with former methods, spectroscopy can reflect more physiological and pathological information of tongue, and a forward step can be made for tongue characterization on the metholology.The main contents of this paper are as follows:(1) Breakthrough the inertia that simple and mechanical imitation of the traditional Chinese medicine diagnosis in the current tongue characterization, and the visible-near infrared spectroscopy combined with black box theory was used to diagnosis disease of tongue inspection for the first time on the basis features of traditional Chinese medicine. A mathematic prediction model was built in this research. The experiment results showed that application of the spectroscopy for disease diagnosis is promising, and this method may provide a new way for clinical disease diagnosis.(2) In order to discover which band was more relevant to the results of model, two spectrometers were used in this research. After built the model and analysis the existing data, we can conclude that the near-infared band has the higher correlation with the disease classification than the visible band for the existing data.(3) In order to solve the problem that the collected spectrum was influenced seriously by the environment light, the optical modulation was used to improve the signal to noise ratio of spectroscopy-tongue inspection for the first time. Reference light was modulated by reticle in this system, and an experiment was made to test the ability of this method. The experiment result showed that the optical modulation can remove the influence of the environment light, and this method can provide a new way to improve the signal to noise ratio of spectroscopy for tongue inspection.(4) Hyperspectral technology was used for tongue inspection in this work to get more information of tongue. A hyperspectral acquisition system based on X-Y scanning galvanometer was also proposed due to the expensive of current equipment. An experiment was made to test the ability of this system. Simulation results showed that X-Y galvanomer scanning system can obtain the hyperspectral data and can correctly obtain surface information of the measured object, and the results also showed that it can be used to collect the hyperspectral data of tongue and provide a new way for tongue information collection.