Premium
Non‐Doppler Two Dimensional Strain Imaging for Evaluation of Coronary Artery Disease
Author(s) -
Perk Gila,
Kronzon Itzhak
Publication year - 2009
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/j.1540-8175.2008.00863.x
Subject(s) - doppler effect , speckle pattern , medicine , strain (injury) , strain rate , cardiology , speckle tracking echocardiography , coronary artery disease , strain rate imaging , doppler imaging , gold standard (test) , biomedical engineering , radiology , artificial intelligence , materials science , heart failure , computer science , ejection fraction , physics , astronomy , blood pressure , diastole , metallurgy
Over the recent years, strain echocardiography has emerged as a quantitative technique for the evaluation of global and segmental cardiac function. Strain is a measure of deformation, expressed as a percent change in a segment's length compared to its predeformation length. Strain rate (SR) is the local rate of deformation or strain per unit time. Recently non‐Doppler two dimensional strain imaging has been developed. This technique is based on tracking ultrasonic speckles from the two dimensional echocardiographic images. These speckles are followed over a number of successive frames, and myocardial velocity is calculated by measuring frame‐to‐frame changes. This technique is independent of the Doppler angle of incidence and allows measurement of several vectors of strain within myocardial tissue. Non‐Doppler strain is a powerful tool, enabling detection of subtle abnormalities in myocardial function. Current evidence shows that non‐Doppler strain imaging may allow identification of the early changes that occur with ischemic insult to the myocardium. It may also provide a tool for identification of scarred, non‐viable myocardium, with similar accuracy to that of cardiac MRI. Non‐Doppler strain imaging is likely to become a standard tool in the evaluation of patients with ischemic heart disease.