Figure 6

Tissue Doppler waveforms of the right (A) and left (C) atrio-ventricular grooves (Circumflex and Right coronary arteries). The right coronary artery E’ and A’ waves (B) tend to be broader leaving a shorter period of minimal cardiac motion. While the magnitude of each wave varies between individuals, the integral of the wave, or total motion is usually greater for the right than circumflex coronary arteries. This is the corollary of the rapid and more prolonged period of motion of the right coronary artery as may be seen during cine coronary angiography [7]. The duration of the PMCM of the right coronary between the E’ and A’ is also reduced relative to the Circumflex artery (D). Shown with indicative scale (cm/s). S’ indicates systolic myocardial velocity.