OHSU

Myocardial Contrast Echocardiography

MCE uses microbubbles as contrast agents that scatter ultrasound waves during their transit through the coronary microcirculation. The microbubbles, which are made of insoluble, high-molecular weight gases and are about the size of a red blood cell, are injected into a vein and flow with the blood into the heart through the coronary arteries. The signal or - backscatter - produced by the bubbles can be detected and measured, telling doctors the velocity of blood flowing through the heart.

An example of a normal perfusion in a long axis view (color-coded image).

3-D contrast enhanced imaging allows a detailed assessment of the extent of myocardial perfusion defects.