segunda-feira, maio 27, 2013

Parâmetros do speckle tracking: Do Euro Echo

Aqui, aula muito boa.
Boa notícia! Todos os softwares vão falar a mesma língua!!!????

Normal myocardial strain values

In healthy individuals, average peak systolic left ventricular longitudinal strain assessed by speckle tracking technique is in the range of -18 - -20%, systolic circumferential strain is 20 - -22% and radial systolic strains >+40%, respectively.
Due to variance between strain values between vendors, a joint workgroup of the American Society of Echocardiography (ASE), the European Association of Echocardiography (EAE) and representatives of all Medical Imaging vendors will work for a standardization of strain values from different scanners. The algorithms used by the different software packages are similar in terms of the speckle-tracking analysis, which is based on a block-matching approach of the speckle patterns within the myocardium, however, the strain calculation formulas used are somewhat varying. There are presently ongoing trials with the different scanners using the same formula for strain calculations.

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