Diaphragm assessment by two dimensional speckle tracking imaging in normal subjects.

ABSTRACT:

Background

Conventionally, ultrasonographic assessment of diaphragm contractility has involved measuring respiratory changes in diaphragm thickness (thickening fraction) using B-mode or caudal displacement with M-mode. Two-dimensional speckle-tracking has been increasingly used to assess muscle deformation ('strain') in echocardiography. We sought to determine in a pilot study if this technology could be utilized to analyze diaphragmatic contraction.

Methods

Fifty healthy adult volunteers with normal exercise capacity underwent ultrasound imaging. A linear array transducer was used for the assessment of diaphragm thickness, thickening fraction (TF), and strain in the right anterior axillary line at approximately the ninth intercostal space. A phased array transducer was appl

SUBMITTER: Orde SR 

PROVIDER: S-EPMC4960718 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature