Thara SeesaardChayanin KhunarakTeerakiat KerdcharoenTaya KitiyakaraMahidol University2018-06-112018-06-112012-12-01Conference Proceedings - IEEE International Conference on Systems, Man and Cybernetics. (2012), 1622-16261062922X2-s2.0-84872405820https://repository.li.mahidol.ac.th/handle/20.500.14594/14014An electronic nose (E-nose) has been designed and fabricated for detection of liver cancer based on measurement of the volatiles in the exhaled breath. This e-nose system is in the form of a briefcase, practical for adoption in both clinical and on field uses. The sensing unit is based on eight commercial metal oxide semiconductor gas sensors that are sensitive to a broad range of volatile chemicals, such as ammonia, sulfides, alcohol and hydrocarbons, sufficient to cover the chemical species contained in the human exhaled breath. Delivery of the odor samples to e-nose can be done easily by collecting the exhaled molecules from face mask worn by patients for several minutes. We have demonstrated the preliminary performance of this portable e-nose by comparing the odor of the breath based on two groups of people, patients diagnosed with hepatocellular carcinoma (HCC) and healthy control. It was found that this e-nose can discriminate the patterns of volatile organic compounds (VOCs) from these two groups, as analyzed by the principal component analysis (PCA). With further validation and development, this e-nose may become very useful for monitoring the exhaled as a screening device for detecting patients with early stage liver cancer. Such a device would help reduce the high mortality associated with this disease. © 2012 IEEE.Mahidol UniversityComputer ScienceEngineeringConference PaperSCOPUS10.1109/ICSMC.2012.6377969