During the Doppler ultrasound examination of the heart (Colour Doppler echocardiography) the heart and the large blood vessels are scrutinized. Colour Doppler echocardiography makes it possible to investigate the size and function of the 4 chambers and the valves of the heart. Colour Doppler echocardiography is the most conclusive diagnostic procedure in outpatient cardiology. In our practice it is complemented by Tissue Doppler echocardiography.