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Transthoracic Speckle Tracking Echocardiography for the Quantitative Assessment of Left Ventricular Myocardial Deformation
Published on: October 20, 2016
Role of Contrast Echocardiography for the Assessment of Left Ventricular Function
1Cardiology Department, Northwick Park Hospital, Watford Road Harrow, Middlesex, HA1 3UJ, United Kingdom.
Insights
Ultrasound contrast agents significantly improve the visualization of the left ventricle endocardial border during echocardiography. This enhances the accuracy of assessing left ventricular function and reduces the need for additional costly imaging tests.
Area of Science:
- Cardiology
- Medical Imaging
- Ultrasound Technology
Background:
- Incomplete identification of the left ventricle endocardial border during echocardiography affects at least 30% of patients.
- This limitation can lead to inaccurate assessments of left ventricular function and necessitate further, more expensive diagnostic imaging.
- Accurate endocardial border definition is crucial for reliable evaluation of cardiac performance.
Purpose of the Study:
- To evaluate the efficacy of second-generation ultrasound contrast agents in improving endocardial border detection in echocardiography.
- To assess the impact of contrast-enhanced echocardiography on the accuracy of left ventricular function assessment.
- To compare contrast-enhanced harmonic imaging with unenhanced harmonic imaging for left ventricular function evaluation.
Main Methods:
- Utilized second-generation ultrasound contrast agents, specifically SonoVuetrade mark, in clinical trials involving 702 patients.
- Conducted rest and stress echocardiography with and without contrast enhancement.
- Compared accuracy of left ventricular ejection fraction and volumes determination using contrast agents versus standard imaging.
Main Results:
- Contrast agents consistently improved endocardial border detection during fundamental echocardiography at rest and during stress.
- Studies involving SonoVuetrade mark demonstrated improved accuracy in determining left ventricular ejection fraction and volumes.
- Contrast-enhanced harmonic imaging showed potential for greater accuracy than unenhanced imaging, though further research is needed.
Conclusions:
- Second-generation ultrasound contrast agents enhance endocardial border visualization in echocardiography, improving diagnostic accuracy.
- Contrast-enhanced echocardiography offers a more reliable method for assessing left ventricular function compared to unenhanced imaging.
- Further large-scale clinical studies are warranted to fully establish the value of harmonic contrast imaging in left ventricular function assessment.
Abstract:
The endocardial border of the left ventricle is incompletely identified in at least 30% of patients at rest or during stress echocardiography during fundamental imaging. This may lead to inaccurate assessment of regional and global left ventricular function or may lead to further diagnostic imaging with another modality resulting in a higher cost of healthcare. The recent development of second generation ultrasound contrast agents has resulted in improved detection of endocardial border at rest and during stress fundamental echocardiography. This has been consistently shown in various clinical trials involving 702 patients using a new contrast agent, SonoVuetrade mark. Other studies with contrast agents have also shown improved accuracy for determining left ventricular ejection fraction and volumes. Although unenhanced tissue harmonic imaging itself improved the assessment of left ventricular function, contrast enhanced harmonic imaging has recently been shown to be more accurate; however, larger clinical studies are required to establish the value of harmonic contrast imaging for the assessment of left ventricular function.
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