Strain imaging may provide pathophysiological data not available from other parameters. What Are the Possible Advantages of Strain Imaging? The true value of strain imaging and what it truly contributes to standard measures remain under discussion. So far, only the assessment of global longitudinal strain (GLS) by echocardiography is recommended in the guidelines on hypertrophic cardiomyopathy (1) and patients assessed for cardiotoxicity of chemotherapy (2).
However, despite this wealth of quantitative data, only few of these measures have made it into routine clinical practice, and scientific data backing their widespread use remain inconclusive. These can be used to objectivize myocardial motion and separate various motion components such as longitudinal, circumferential, and radial strain on a global and regional basis and to provide measures of synchronicity. They provide quantitative data on temporal, spatial, and global contraction and relaxation as well as contraction velocity and relaxation velocity. Strain imaging by echocardiography based on speckle tracking and cardiac magnetic resonance (CMR) based on feature tracking are increasingly reported upon and used in clinical practice.
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