AHA 17-segment model
A standardized left ventricular segmentation scheme dividing the myocardium into 17 segments for systematic analysis and reporting.
Full Definition
The American Heart Association (AHA) 17-segment model is the standard nomenclature for left ventricular segmentation in cardiovascular imaging. This model divides the left ventricle into 17 segments: six basal, six mid-ventricular, four apical, and one true apex. Each segment is assigned to a specific coronary artery territory, facilitating correlation between imaging findings and coronary anatomy. This standardization ensures consistent communication between imaging modalities and across different institutions, improving reproducibility in research and clinical practice.
Usage
Usage note: Always capitalize 'AHA' when referring to the American Heart Association model.
In Context
- "Regional wall motion was assessed using the AHA 17-segment model, with hypokinesis noted in segments 7 and 8." — Echocardiography report
- "Perfusion defects were mapped according to the AHA 17-segment model to correlate with coronary territories." — Nuclear cardiology report