Septal wall of left ventricle

The septal wall of the left ventricle refers to the left-sided aspect of the interventricular septum, which is the muscular partition separating the left and right ventricle.

The walls of the left ventricle are classically described as the anterior (or superior), posterior (or inferior), lateral, and septal (interventricular septum) walls. This nomenclature is widely used in cardiac imaging, including echocardiography, cardiac MRI, and nuclear medicine, and is reflected in the American Heart Association's 17-segment model for left ventricular analysis. The anterior wall is sometimes referred to as the superior wall for anatomical accuracy, while the posterior wall may be called the inferior wall. The lateral wall is positioned on the left side of the ventricle, and the septal wall is adjacent to the interventricular septum.