Feasibility and reference values of left atrial longitudinal strain imaging by two-dimensional speckle tracking.

ABSTRACT:

Background

The role of speckle tracking in the assessment of left atrial (LA) deformation dynamics is not established. We sought to determine the feasibility and reference ranges of LA longitudinal strain indices measured by speckle tracking in a population of normal subjects.

Methods

In 60 healthy individuals, peak atrial longitudinal strain (PALS) and time to peak longitudinal strain (TPLS) were measured using a 12-segment model for the left atrium. Values were obtained by averaging all segments (global PALS and TPLS) and by separately averaging segments measured in the two apical views (4- and 2-chamber average PALS and TPLS).

Results

Adequate tracking quality was achieved in 97% of segments analyzed. Inter and intra-observer variability coefficients of measurement

SUBMITTER: Cameli M 

PROVIDER: S-EPMC2652427 | biostudies-literature | 2009 Feb

REPOSITORIES: biostudies-literature