A Real-Time Algorithm to Detect Inverted and Symmetrical T-Wave

ECG signal processing is one of the earliest challenges for scientists as a tool for cardiovascular assessment. T-wave, as a part of ECG signal, is produced by ventricular repolarisation and its orientation usually corresponds with that of the QRS complex. Inverted T-wave in some leads can be a sign of abnormality. In this work we proposed a real-time algorithm to detect the polarity and symmetry of T-wave in those leads that contain positive R-peak. Abnormalities like myocardial ischaemia, can be identified by the proposed algorithm. This method is applied on 15 records of MIT-BIH of Physionet, in order to evaluate its performance. The real-time behavior of the algorithm makes it possible to be implemented on an ECG machine.