心電圖是一種紀錄心臟所產生的生物電流技術,臨床醫師可以藉由心電圖對心臟狀況進行評估,並做進一步診斷;其中胎兒心電圖訊號是觀察胎兒健康情形的一種指標,也是大部分懷孕婦女及醫師最關心的事情;然而,胎兒的心電圖不易經由非侵入式的測量取得,為此就必頇透過有效的方法來獲得胎兒心電訊號。本研究目的是希望藉由消除孕婦的腹部訊號干擾和漂移後,再將其利用自適應消噪濾波器的方法從母體訊號中,截取出胎兒心電訊號,並進行醫學上的分析處理。本研究中,我們還運用此分離演算法,以MATLAB 設計了一個胎兒心電圖抽取及重要心電參數計算的整合分析環境 Fetal ECG Analysis Environment (FEAE)。
Electorcardiography (ECG) is one of the best ways to measure and diagnose abnormal rhythms of the heart. Its noninvasive nature is especially beneficial for diagnosis of fetal heart defects in advance of delivery. However, there is no appropriate method for noninvasively measuring the fetal ECGs. In this study, we propose a method to cancel noise and drifting and further to extract fetal ECG effectively by an adaptive filter from maternal abdomen and thorax ECGs. In addition, an integrated analysis software, Fetal ECG Analysis Environment (FEAE), for fetal ECG signal extraction and evaluation using the proposed method is designed and implemented in MATLAB GUIDE environment for future study.