scholarly journals The tissue velocity imaging and strain rate imaging in the assessment of interatrial electromechanical conduction in patients with sick sinus syndrome before and after pacemaker implantation

2011 ◽  
Vol 11 (2) ◽  
pp. 124
Author(s):  
Xiaozhi Zheng ◽  
Ping Ji ◽  
Hongwei Mao ◽  
Jianqun Hu
Keyword(s):  
Strain Rate ◽  
Sick Sinus Syndrome ◽  
Pacemaker Implantation ◽  
Tissue Velocity ◽  
Strain Rate Imaging ◽  
Velocity Imaging ◽  
Before And After

scholarly journals Longitudinal Tissue Velocity and Deformation Imaging in Patients with Significant Stenosis of Left Anterior Descending Artery

2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Reyhaneh Zavar ◽  
Hakimeh Sadeghian ◽  
Masoumeh Lotfi-Tokaldany ◽  
Mohammad Moein Ashrafi ◽  
Mahmood Sheikh Fathollahi ◽  
...  
Keyword(s):  
Strain Rate ◽  
Wall Motion ◽  
Peak Systolic Velocity ◽  
Tissue Velocity ◽  
Strain Rate Imaging ◽  
Velocity Imaging ◽  
Specificity And Sensitivity ◽  
Significant Difference ◽  
Normal Wall ◽  
The Mean

 Introduction: Myocardial longitudinal tissue velocity imaging (TVI) and strain rate imaging (SRI) indices may have a role in the prediction of significant proximal stenosis of left anterior descending (LAD) by echocardiography. Materials And Methods: Total 20 patients with proximal LAD stenosis >70% by angiography and ejection fraction ≥50%, without wall motion abnormality at resting echo (stenotic group) and 20 angiographically normal coronaries subjects with normal echocardiography (non-stenotic group) were included in the study. SRI and TVI were performed in nine segments of the LAD territory at rest. Parameters of interest included: peak systolic strain (ST, %), strain rate (SR, Second-1), and peak systolic velocity (Sm, cm/s). Results: Overal mean ST and SR showed a significant reduction in the stenotic group compared to non-stenotic group (P<0.001), while the mean Sm had no significant difference. A segment-by-segment comparison revealed a reduction of ST in 4/9 (two apical and two anteroseptal) and SR in 5/9 (three apical, septal, and anteroseptal midportion) in the stenotic group (P<0.05). Both ST and SR showed a significant reduction in three segments: anterior-apical, lateral-apical, and anteroseptal-midportion. When both ST and SR decreased in one segment, specificity and sensitivity for the diagnosis of proximal LAD stenosis was more than 80% and 55%, respectively, by Roc analysis. Conclusion: There is an overall reduction in the mean ST and SR in the segments of LAD territory with significant proximal stenosis and normal wall motion at rest and an acceptable specificity and sensitivity of SRI for the detection of stenosis in these segments.

scholarly journals Strain rate imaging is superior to tissue velocity imaging for measuring atrioventricular time interval in the fetus

2003 ◽  
Vol 41 (6) ◽  
pp. 494 ◽  
Author(s):  
Azaria J.J.T. Rein ◽  
Zeev Perles ◽  
Amiram Nir ◽  
Ikuo Hashimoto ◽  
Xiaokui Li ◽  
...  
Keyword(s):  
Strain Rate ◽  
Time Interval ◽  
Tissue Velocity ◽  
Strain Rate Imaging ◽  
Velocity Imaging

Normal values for tissue velocity and strain rate imaging parameters of left and right atrial myocardium in normal subjects

2019 ◽  
Author(s):  
Azam Safir‐Mardanloo ◽  
Mani Khorsand Askari ◽  
Masoumeh‐ Lotfi Tokaldany ◽  
Mohammad Moein Ashrafi ◽  
Hakimeh Sadeghian
Keyword(s):  
Strain Rate ◽  
Normal Values ◽  
Normal Subjects ◽  
Right Atrial ◽  
Atrial Myocardium ◽  
Imaging Parameters ◽  
Tissue Velocity ◽  
Strain Rate Imaging ◽  
Left And Right
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