Which tomographic plane of the heart displays all walls of the left ventricles?

The short-axis tomographic plane is the correct choice for displaying all walls of the left ventricle. This approach is particularly designed to visualize the heart's structure in a way that captures the left ventricle in cross-section. By slicing the heart horizontally, the short-axis view provides images of the anterior, lateral, inferior, and septal walls of the left ventricle simultaneously.

This comprehensive visual representation is crucial for evaluating myocardial function, regional wall motion, and detecting any abnormalities such as ischemia or infarction that might affect the left ventricular walls. Each slice of the short-axis view is typically taken at various levels of the ventricle, from the base to the apex, allowing for detailed analysis of the entire ventricular structure.

In contrast, the other tomographic planes, such as the horizontal long axis and vertical long axis views, display the left ventricle from different angles but do not encompass all walls in a single image. The transaxial view is less commonly referenced in the context of cardiac imaging specifically in this manner, making the short-axis view the most appropriate choice for evaluating all left ventricular walls effectively.