radial strain
Myocardial deformation measurement representing thickening and thinning of the heart wall in the radial direction during the cardiac cycle.
Full Definition
Radial strain quantifies the percentage change in myocardial wall thickness from end-diastole to end-systole, measured perpendicular to the cardiac wall. This parameter reflects the heart muscle's ability to thicken during contraction, providing insight into regional and global left ventricular function. Radial strain is typically positive during systole as the myocardium thickens inward. Reduced or negative radial strain values indicate impaired contractility and may suggest ischemia, infarction, or cardiomyopathy. The measurement is obtained through speckle-tracking echocardiography or feature-tracking cardiac MRI.
Usage
Usage note: Use specific numeric values with percentage notation when reporting measurements.
In Context
- "Peak radial strain was significantly reduced in the anterior wall segments supplied by the LAD." — Echocardiography strain analysis report
- "Global radial strain measurements showed preserved values despite regional wall motion abnormalities." — Cardiac function assessment