endocardial surface
The inner layer of the heart wall that lines the cardiac chambers, important for wall motion analysis and volumetric measurements.
Full Definition
The endocardial surface represents the innermost layer of the myocardium that directly interfaces with the blood pool within the cardiac chambers. In cardiac imaging, accurate delineation of the endocardial surface is crucial for measuring chamber volumes, calculating ejection fraction, and assessing regional wall motion. This surface serves as the primary boundary for automated and manual contouring algorithms in echocardiography, cardiac MRI, and CT. Pathological conditions such as thrombus formation, endocarditis, or infiltrative diseases can alter the endocardial surface appearance and affect measurement accuracy.
Usage
Usage note: Distinguish from epicardial surface when describing cardiac borders.
In Context
- "The endocardial surface was clearly delineated allowing accurate volume calculation." — Cardiac MRI analysis
- "Endocardial surface tracking demonstrated reduced systolic excursion in the inferior segments." — Wall motion analysis