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송미혜(M. H. Song),명현석(H. S. Myoung),이경중(K. J. Lee) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
In this study, we developed five mobile units and an integrated system which can manage vital signs from each unit using Bluetooth wireless communication. The five kinds of mobile unit were so designed that each has different function to be applied according to the condition of patient properly. The mobile units can measure ECG signal of single or 12 channel, blood pressure, pulse and SpO2 signal from a patient. Also, to reduce the uncomfortable measurement, several types of units such as belt type, wrist type and necklace type were designed. Our proposed system can integrate and monitor several biological signals from different patient by using Bluetooth wireless communication simultaneously. The developed system was evaluated in the simulated emergent situation and showed the system can monitor 5 patients in maximum according to the data quality. It showed the possibilities that the developed system can be used effectively for emergency situation or in- or out-hospital transport of patient. In future, with the combination of mobile communication technique, a patient who is in emergency situation can be provided with proper first-aid and a doctor can pile information of patient and give better diagnosis and treatments.
송미혜(M. H. Song),조성필(S. P. Cho),박진성(J. S. Park),최호선(H. S. Choi),이경중(K. J. Lee) 대한전기학회 2010 정보 및 제어 심포지엄 논문집 Vol.2010 No.4
In this paper, we proposed a new simple detection algorithm for classification of ventricular tachycardia and supra-ventricular tachycardia. The proposed method is based on the single channel intracardiac electrogram (EGM) signal and has been designed for implantable cardioverter defibrillator (ICD). We evaluated the algorithm using the Ann Arbor Electrogram Libraries Database (AAEL) and compared the result with that of other published detectors. The proposed algorithm showed a average sensitivity of 95.5%, a average specificity of 99.2%, a average positive predictive value (PPV) of 97.5%, and a average negative predictive value (NPV) of 98.5% respectively. It showed better performance than other published methods and could be implemented real time easily as relatively fast computation time and simple structure.
송미혜(M. H. Song),조성필(S. P Cho),최호선(H. S. Choi),이경중(K. J. Lee) 대한전기학회 2009 정보 및 제어 심포지엄 논문집 Vol.2009 No.10
In this paper, we proposed a new simple detection algorithm for classification of ventricular tachycardia (VT) and ventricular fibrillation (VF). The proposed method is based on the intracardiac electrogram (EGM) signal and has been designed for implantable cardioverter defibrillator (ICD). We evaluated the algorithm using the Ann Arbor Electrogram Libraries Database (AAEL) and compared the result with that of other published detectors. The proposed algorithm showed a average sensitivity of 94.5%, a average specificity of 97.5, a average positive predictive value (PPV) of 92.2%, and a average negative predictive value (NPV) of 96.8% respectively. It showed better performance than other published methods and could be implemented real time easily as relatively fast computation time and simple structure.
단일채널 산모 복부 심전도로부터 새로운 태아 심전도 검출 방법
송미혜(M. H. Song),조성필(S. P. Cho),김이웅(Y. W. Kim),최호선(H. S. Choi),이경중(K. J. Lee) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.10
In this paper, we have proposed a new method to extract the fetal ECG from a pregnant woman's abdominal signal using least square acceleration (LSA) filter and adaptive impulse correlation (AIC) filter. To evaluate the performance, the proposed method and other fetal ECG extraction techniques were processed using the real ECG data and then the results were compared. According to comparative results, the proposed method is powerful and successful for extracting the fetal ECG. It was able to separate perfectly even though the fetal beats overlap with the QRS wave of the maternal beats and to extract fetal ECG using any single-channel abdominal signal measured from pregnant woman's abdominal surface. Also, it could be implemented easily by fast computation time and simple structure. It is sure that our method could be useful for portable fetal monitoring system.