Figure 1

Coronary angiogram of two myocardial bridges in the LAD. (a) Coronary angiogram of two myocardial bridges in the left anterior descending (LAD) branch (arrows) in diastole (left) and systole (right). Compression of the artery during the hearts contraction phase, i.e. systole, is a characteristic finding in myocardial bridging (see text and [6] for details), (b) Diastolic lumen dimensions and flow velocity are normal, while systolic flow velocities are increased within the bridged segments.