[What indicators for tissue Doppler?].
The analysis and quantification of regional myocardial function are necessary in numerous pathologies, of which ischaemic cardiomyopathy figures above all. Several ultrasound techniques have been developed with the objective of quantifying regional function. Among these methods, myocardial tissular Doppler is well placed, analysing the radial and longitudinal components of the myocardial fibres with different indices: movement indices (myocardial velocity and displacement) deformation indices (speed of deformation which is just the myocardial velocity gradient multiplied by the relative myocardial distance and deformation). The measurement of speeds, particularly at the level of the mitral ring, is a now well validated tool for the analysis of left ventricular filling. However, other indices (deformation in particular) are still being evaluated.
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Service de cardiologie, hôpital Charles Nicolle, 1, rue de Germont, 76000 Rouen.
D015150:Echocardiography, Doppler / Q000379:methods*; D006321:Heart; D006801:Humans; D017202:Myocardial Ischemia / Q000000981:diagnostic imaging*; D018487:Ventricular Dysfunction, Left / Q000000981:diagnostic imaging