Tissue Doppler and strain imaging: anything left in the echo-lab?

Table 2 Clinical applications of tissue Doppler and strain

Parameters	Information	Clinical condition	TDI	Strain	SR
Basal systolic peak	Global longitudinal systolic function	Aspecific	-	-	+/-
Systolic time-to-peak	Mechanical dyssynchronicity	Cardiomyopathy	+	+/-	-
Systolic peak	Right ventricular systolic function	Heart failure	-	+/-	+/-
Systolic peak and/or protodiastolic peak	Regional systolic function at rest	Ischemic Cardiopathy	-	+/-	+/-
Systolic peak and/or protodiastolic peak	Regional systolic function during stress	Ischemic Cardiopathy	-	+/-	+/-
Systolic peak	Preclinical cardiac involvement	Infiltrative Cardiomyopathy	-	-	+/-
Systolic peak	Monitoring of therapeutic effect	Infiltrative Cardiomyopathy	-	+/-	+/-
Protodiastolic peak	Ventricular filling pressures	Aspecific	++	-	+/-
Protodiastolic peak	Prognostic indicator	Arterial Hypertension	+	-	-
Protodiastolic peak	Distinction between constriction and restriction	Heart failure	+	-	+/-
Protodiastolic peak	Identification of pathological hypertrophy	Ventricular Hypertrophy	+	-	+/-
Atrial systolic peak	Prediction of response to cardioversion	Atrial Fibrillation	-	+	-

SR = Strain rate; - = not useful; +/- = useful but limited reproducibility; + = potentially useful; ++ = proven to be useful.

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