Fig. 7
From: Contrast echocardiography: a practical guideline from the British Society of Echocardiography
A At peak stress a steady state of contrast is seen throughout the myocardium. B A high MI flash is delivered, and microbubbles are temporarily cleared from the myocardial capillaries. C Myocardial replenishment of microbubbles are seen after one cardiac cycle, with an artefact in the basal anterolateral segment (see Additional file 1: Video S1). Artefact is commonly seen here as lateral resolution is lower than axial definition. The artefact is characterised by full thickness defect which extends beyond the myocardium as opposed to a true defect which is usually subendocardial and fills from the epicardium to the endocardium after 2 secs (see text)