Non-invasive imaging of cardiac electric activity

It is of importance to non-invasively image cardiac electrical activity from body surface ECG measurements. Such approaches include body surface ECG mapping and ECG inverse solutions to deduce information on the distribution of cardiac bioelectrical sources. Body surface Laplacian ECG mapping is a recently proposed imaging approach which has shown promise in enhancing our capability to non-invasively image underlying cardiac electrical activity. In this short paper, we review recent progress on non-invasive imaging of cardiac electrical activity, in particular, body surface Laplacian ECG mapping.