Electronic nose system for early detection of lung cancer

Abstract

An electronic nose system for early detection of lung cancer comprises an exhaled air sampling system, a miniature sensor array and a signal preprocessing and pattern recognizing system, wherein the exhaled air sampling system is used for controlling air collection, circulation and rinsing; the miniature sensor array is used for collecting air response signals and converting the air response signals into electrical signals; the signal preprocessing and pattern recognizing system is used for signal processing, conversion and air identification and detection; the exhaled air sampling system comprises an air sampling device and an air chamber air passage unit; the miniature sensor array is encapsulated in the sensor air chamber of the air chamber air passage unit; and the signal preprocessing and pattern recognizing system is arranged outside the sensor air chamber and is connected with the miniature sensor array. The electronic nose system has the advantages of high sensitivity, high response speed, low cost, portability, and easiness in operation; a data base has excellent expandability; and the electronic nose system can be widely applied to early detection of lung cancer, monitoring after recovery and screening of high-risk populations.

Description

technical field [0001] The invention relates to the technical field of gas identification and medical detection, in particular to a non-invasive electronic nose system for early detection of lung cancer based on micro sensor array and pattern recognition technology. Background technique [0002] Cancer is the disease with the highest incidence rate in the world besides heart disease. According to the report of the World Health Organization, in the death cases caused by cancer, lung cancer patients account for about 18%, accounting for about 1.3 million people in the world every year. However, the early symptoms of cancer are often few, and a series of symptoms and signs will gradually appear after a certain stage of development. Studies have shown that the 5-year survival rate of early cancer diagnosis is 60% higher than that of late cancer diagnosis. If cancer is detected early, the survival rate of patients can be greatly improved in the case of localized tumors, so earl...

AI Technical Summary

Problems solved by technology

However, this electronic nose only detects undecane and decane, and the diagnostic accuracy is low, which can only be used as a preliminary basis for early cancer monitoring; and there is no complete collection-response-identification system. In the analysis and screening of response signals, there is no corresponding electronic spectrum database, and it is impossible to quickly and conveniently identify various gases

Images