scholarly journals Impact of image quality on reliability of the measurements of left ventricular systolic function and global longitudinal strain in 2D echocardiography

2018 ◽  
Vol 5 (1) ◽  
pp. 27-39 ◽  
Author(s):  
Yasufumi Nagata ◽  
Yuichiro Kado ◽  
Takeshi Onoue ◽  
Kyoko Otani ◽  
Akemi Nakazono ◽  
...  
Keyword(s):  
Image Quality ◽  
Longitudinal Strain ◽  
Systolic Function ◽  
Global Longitudinal Strain ◽  
Left Ventricular Systolic Function ◽  
Left Ventricular ◽  
Ventricular Systolic Function ◽  
2D Echocardiography

4933Comparison of left ventricular global longitudinal strain measurements using contrast-enhanced and non-contrast echocardiographic images

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
S Liang
Keyword(s):  
Image Quality ◽  
Contrast Agents ◽  
Longitudinal Strain ◽  
Systolic Function ◽  
Global Longitudinal Strain ◽  
Left Ventricular Systolic Function ◽  
Left Ventricular ◽  
Ventricular Systolic Function ◽  
Contrast Enhanced ◽  
Contrast Enhanced Echocardiography

Abstract Background Left ventricular ejection fraction (LVEF) and global longitudinal strain (GLS) are two important index for the quantification of left ventricular systolic function. With the help of ultrasound contrast agents, we can improve the definition of endocardial borders and allow the quantification of LVEF in patients with poor image quality. However, the feasibility of GLS measurements in contrast-enhanced images is still controversial. Purpose Our study aimed to explore the feasibility of GLS measured by velocity vector imaging (VVI) in contrast-enhanced images, compare the difference of measurements in contrast-enhanced and non-contrast images, and analyze the relation between LVEF and GLS in both conditions. Methods A total of 133 patients with cancer, who were registered for transthoracic echocardiography as well as contrast-enhanced echocardiography were studied. LVEF was measured using the biplane modified Simpson's rule and GLS was measured with offline VVI analysis of the three standard apical views in non-contrast and contrast-enhanced images respectively. Linear regression was performed to derive correlation coefficients between LVEF and GLS both in non-contrast and contrast-enhanced images. Results GLS measurements in non-contrast images were discarded in 2/133 patients (1.5%), while in contrast-enhanced images were obtained in all patients. LVEF (64.12±7.47% vs. 66.25±8.61%, respectively; P<0.01) and GLS (−20.99±4.67% vs. −23.40±4.58%, respectively; P<0.01) were both significantly higher in the presence of contrast agents. A linear regression between LVEF and GLS in non-contrast images (r=0.627, P<0.001) was observed, as well as in contrast-enhanced images (r=0.649, P<0.001). Conclusions GLS measured by VVI in contrast-enhanced echocardiography is a feasible and reliable index for the quantification of left ventricular systolic function, even in patients with poor image quality. Compared with the measurements in non-contrast images, both LVEF and GLS measurements are higher in the presence of contrast agents.

scholarly journals Global longitudinal strain: a novel index of left ventricular systolic function

2004 ◽  
Vol 17 (6) ◽  
pp. 630-633 ◽  
Author(s):  
Shimon A Reisner ◽  
Peter Lysyansky ◽  
Yoram Agmon ◽  
Diab Mutlak ◽  
Jonathan Lessick ◽  
...  
Keyword(s):  
Longitudinal Strain ◽  
Systolic Function ◽  
Global Longitudinal Strain ◽  
Left Ventricular Systolic Function ◽  
Left Ventricular ◽  
Ventricular Systolic Function

scholarly journals Systolic Aortic Root Motion and Angle as novel indices of Left Ventricular Systolic Function

2020 ◽  
Author(s):  
ghada m soltan ◽  
ahmed m el kersh ◽  
nevien e sami ◽  
ghadeer m yehia ◽  
mahmoud ali soliman
Keyword(s):  
Aortic Root ◽  
Longitudinal Strain ◽  
Systolic Function ◽  
Global Longitudinal Strain ◽  
Left Ventricular Systolic Function ◽  
Left Ventricular ◽  
P Value ◽  
Ventricular Systolic Function ◽  
Global Left Ventricular ◽  
Motion Amplitude

Abstract Background Aortic root motion was used only as a surrogate parameter of global left ventricular systolic function depending on its direct proportion to cardiac output. We hypothesize that aortic root motion angle and aortic root motion amplitude may overcome many limitations of EF calculation by M mode and two dimensional methods and are easier and reproducible.Objective The aim of this study is to asses systolic aortic root motion measured by M mode and aortic root motion angle as novel indices of global left ventricular systolic function.Patients and methods one hundred patients were enrolled in this study and divided into four groups: according to their age (above and below 60 years) and EF (above and below50%). They were subjected to full history taking, careful clinical examination, and conventional echo-Doppler study .Systolic aortic root motion obtained from long axis parasternal view by M-mode echo guided by 2D echo, and aortic root motion angle was traced off line and mathematically measured. Also global logitudinal strain (GLS) and global longitudinal strain rate (GLSR) from apical 4,3 and 2 chamber views were measured offline.Results Statistical analysis of collected data show that there are significant differences between control groups and patient groups in aortic root motion angle (t= 16.9 and p value <0.001, and in aortic root motion amplitude (t= 20.1 and p value <0.001). Aortic root motion (cm) and aortic root motion angle have significant positive correlation with EF(Mm), EF(2D), Fs, global longitudinal strain(GLS) and global Strain rate . The best cutoff value of aortic root motion angle was 19.5 degree, with sensitivity of 93.9%, specificity of 96.1.Aortic root motion angle >19.5 predicts systolic function >50% and that<19.5 predicts systolic function <50% The best cutoff value of aortic root SAM was 8.5 mm. An aortic root SAM of ˂ 8.5 mm predicts an LVEF of ˂ 50% with sensitivity of 95.9%, specificity of 96.1%.Conclusion The amplitude of systolic aortic root motion (SARM) by (M-mode) and aortic root motion angle are well- correlated with the EF and GLS and could be considered as novel indices of global left ventricular systolic function with high accuracy and reproducibility .

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