Abstract:
Diseases are detected through long, painful and irritating procedures through invasive and non-invasive methods like collecting of different types of fluids from body, by passing rays from body, biopsy, endoscopy or by taking some precautions before and after testing which discourage patients. These procedures also have negative side effects on body. Samples are collected, sent to different laboratories for testing and then results come. This whole procedure may take days or even month to diagnose disease. From past few years, electronic devices have been developed and introduced which can detect diseases non-invasively and consume less power and time and meanwhile are less dangerous to body tissues and are user friendly. In this progressing period of electronic devices in medical field, some devices were also developed to detect volatile organic compounds (VOCs) present in exhaled breath of humans.
Some diseases have different concentration of (VOCs) also known as disease biomarkers in exhaled breath which can be detected through E-Nose system. E-Nose have some sensors through which exhaled breath is monitored and by setting some threshold the difference between normal and abnormal quantities of VOCs present in exhaled breath are detected. In this paper we use MQ series electrochemical gas sensors to detect kidney, liver/stomach and diabetic disease in patients.
