Experimental assessment of a new research tool for the estimation of two-dimensional myocardial strain
| Autor: | Jan D'hooge, Patrick Wouters, H. Alex Leather, Stian Langeland, Bart Bijnens, Frank Rademakers, Piet Claus, George R. Sutherland |
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| Rok vydání: | 2006 |
| Předmět: |
Sheep
Materials science Acoustics and Ultrasonics Radiological and Ultrasound Technology Longitudinal strain Strain (chemistry) business.industry Acoustics Ultrasound Biophysics Heart Sonomicrometry Myocardial strain Image Processing Computer-Assisted Perpendicular Animals Radiology Nuclear Medicine and imaging Stress Mechanical Deformation (engineering) business Radial stress Echocardiography Stress |
| Zdroj: | Ultrasound in Medicine & Biology. 32:1509-1513 |
| ISSN: | 0301-5629 |
| DOI: | 10.1016/j.ultrasmedbio.2006.06.021 |
| Popis: | One-dimensional strain imaging has been shown to be angle dependent. To address this problem, a new methodology, 2D-strain, has become available. The aim of this study was to validate this methodology in an in vivo set-up against sonomicrometry. In five open chest sheep, ultrasound gray-scale images were acquired of the inferolateral wall from two different angles. The longitudinal and radial strain components were simultaneously extracted using the novel 2D-strain methodology. The extracted values were compared with sonomicrometry using Bland-Altman statistics and correlation coefficients. A good agreement was found for the longitudinal strain component, while, for the radial strain estimates, the accuracy was less. 2D-strain is a fast and accurate tool to assess longitudinal strain from apical views. Further improvements are needed for the method to be sufficiently accurate in estimating the deformation perpendicular or close to perpendicular to the ultrasound beam. |
| Databáze: | OpenAIRE |
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