Version May 2024
| Parasternal long axis view |
| The parasternal long axis view primarily visualizes the interventricular septum and the posterior left ventricular free wall. |
| The septum seen in this view is the anterior portion which is almost always perfused by the left anterior descending artery. The basal 1 or 2 cm of the interventricular septum is usually perfused by the first septal perforator and can be used to determine if the left anterior descending artery obstruction is before or after the first septal perforator. |
| The posterior left ventricular wall seen in this view is usually perfused by the left circumflex coronary artery. It is not generally involved with an inferior wall infarction that results from right coronary artery or posterior descending artery occlusion. |
| Short axis view |
| In the short axis view, areas perfused by all three coronary arteries can be seen. |
| The left anterior descending artery supplies the anterior portion of the left ventricular free wall and the anterior half of the interventricular septum. |
| The posterior descending artery supplies the posterior medial portion of the left ventricular free wall and the posterior half of the interventricular septum. |
| The left circumflex artery usually supplies the posterior lateral portions of the short axis view, although this is variable. |
| Two chamber apical view |
| The two chamber apical view is comparable to the right anterior oblique view seen on contrast angiography. This view visualizes myocardium supplied almost entirely by the left anterior descending and posterior descending arteries. |
| The basal one-half or two-thirds of the posterior wall is supplied by the posterior descending artery. |
| The rest of the left ventricle is perfused by the left anterior descending. |
| Four chamber view |
| In the four chamber view, the myocardium imaged is supplied by all three coronary arteries. |
| The apex and distal one-half or two-thirds of the interventricular septum is supplied by the left anterior descending artery. |
| The proximal one-third of the septum is usually supplied by the posterior descending artery. |
| The lateral free wall of the left ventricle is usually supplied by branches of the left circumflex artery. |
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