The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
John E Sanderson - One of the best experts on this subject based on the ideXlab platform.
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Tissue Doppler Imaging - A new prognosticator for cardiovascular diseases
Journal of the American College of Cardiology, 2007Co-Authors: John E Sanderson, Thomas H. MarwickAbstract:Tissue Doppler Imaging (TDI) is evolving as a useful echocardiographic tool for quantitative assessment of left ventricular (LV) systolic and diastolic function. Recent studies have explored the prognostic role of TDI-derived parameters in major cardiac diseases, such as heart failure, acute myocardial infarction, and hypertension. In these conditions, myocardial mitral annular or basal segmental (Sm) systolic and early diastolic (Ea or Em) velocities have been shown to predict mortality or cardiovascular events. In particular, those with reduced Sm or Em values of
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tissue Doppler Imaging provides incremental prognostic value in patients with systemic hypertension and left ventricular hypertrophy
Journal of Hypertension, 2005Co-Authors: Mei Wang, Angela Yeemoon Wang, Pik Yuk Ho, Yan Zhang, Cheukman Yu, John E SandersonAbstract:ObjectivesWe sought to determine the prognostic value of left ventricular (LV) mitral annular velocities measured by tissue Doppler Imaging (TDI) in hypertensive patients with echocardiographic evidence of LV hypertrophy.BackgroundEcho LV hypertrophy and LV geometry provide additional predictive val
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peak early diastolic mitral annulus velocity by tissue Doppler Imaging adds independent and incremental prognostic value
Journal of the American College of Cardiology, 2003Co-Authors: Mei Wang, Angela Yeemoon Wang, Pik Yuk Ho, Yan Zhang, John E SandersonAbstract:Abstract Objectives The aim of this study was to ascertain if left ventricular mitral annulus velocities measured by tissue Doppler Imaging (TDI) are more powerful predictors of outcome compared with clinical data and standard Doppler-echocardiographic parameters. Background Tissue Doppler Imaging of basal or mitral annulus velocities provides rapid assessment of ventricular long axis function. But it is not known if TDI-derived velocities in systole and diastole add incremental value and are superior to the standard Doppler-echocardiographic measurements as a predictor of outcome. Methods The study population consisted of 518 subjects, 353 with cardiac disease and 165 normal subjects who had full Doppler two-dimensional–echocardiographic studies with measurement of mitral inflow velocities in early and late diastole, E-wave deceleration time (DT), peak systolic mitral annular velocity (Sm) early and late diastolic mitral annular velocity (Em and Am) by TDI, early diastolic flow propagation velocity, and standard chamber dimensions. All subjects were followed up for two years. The end point was cardiac death. Results Tissue Doppler Imaging mitral annulus systolic and diastolic velocities were all significantly lower in the non-survivors (all p Conclusions Mitral annulus velocity measured by TDI in early diastole gives incremental predictive power for cardiac mortality compared to clinical data and standard echocardiographic measurements. This easily available measurement adds significant value in the clinical management of cardiac patients.
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peak early diastolic mitral annulus velocity by tissue Doppler Imaging adds independent and incremental prognostic value
Journal of the American College of Cardiology, 2003Co-Authors: Mei Wang, Angela Yeemoon Wang, Yan Zhang, Gabriel W K Yip, Mui Kiu Tse, Peggo K W Lam, John E SandersonAbstract:OBJECTIVES The aim of this study was to ascertain if left ventricular mitral annulus velocities measured by tissue Doppler Imaging (TDI) are more powerful predictors of outcome compared with clinical data and standard Doppler-echocardiographic parameters. BACKGROUND Tissue Doppler Imaging of basal or mitral annulus velocities provides rapid assessment of ventricular long axis function. But it is not known if TDI-derived velocities in systole and diastole add incremental value and are superior to the standard Doppler-echocardiographic measurements as a predictor of outcome. METHODS The study population consisted of 518 subjects, 353 with cardiac disease and 165 normal subjects who had full Doppler two-dimensional-echocardiographic studies with measurement of mitral inflow velocities in early and late diastole, E-wave deceleration time (DT), peak systolic mitral annular velocity (Sm) early and late diastolic mitral annular velocity (Em and Am) by TDI, early diastolic flow propagation velocity, and standard chamber dimensions. All subjects were followed up for two years. The end point was cardiac death. RESULTS Tissue Doppler Imaging mitral annulus systolic and diastolic velocities were all significantly lower in the non-survivors (all p < 0.05) as was DT (p = 0.024). In the Cox model the best predictors of mortality were Em, Sm, Am, left ventricular ejection fraction, left ventricular mass, and left atrial diameter in systole (LADs). By backward stepwise analysis Em and LADs were the strongest predictors. After forcing the TDI measurements into the covariate model with clinical and mitral DT <0.16 s, Em provided significant incremental value for predicting cardiac mortality (p = 0.004). CONCLUSIONS Mitral annulus velocity measured by TDI in early diastole gives incremental predictive power for cardiac mortality compared to clinical data and standard echocardiographic measurements. This easily available measurement adds significant value in the clinical management of cardiac patients.
Mei Wang - One of the best experts on this subject based on the ideXlab platform.
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tissue Doppler Imaging provides incremental prognostic value in patients with systemic hypertension and left ventricular hypertrophy
Journal of Hypertension, 2005Co-Authors: Mei Wang, Angela Yeemoon Wang, Pik Yuk Ho, Yan Zhang, Cheukman Yu, John E SandersonAbstract:ObjectivesWe sought to determine the prognostic value of left ventricular (LV) mitral annular velocities measured by tissue Doppler Imaging (TDI) in hypertensive patients with echocardiographic evidence of LV hypertrophy.BackgroundEcho LV hypertrophy and LV geometry provide additional predictive val
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peak early diastolic mitral annulus velocity by tissue Doppler Imaging adds independent and incremental prognostic value
Journal of the American College of Cardiology, 2003Co-Authors: Mei Wang, Angela Yeemoon Wang, Pik Yuk Ho, Yan Zhang, John E SandersonAbstract:Abstract Objectives The aim of this study was to ascertain if left ventricular mitral annulus velocities measured by tissue Doppler Imaging (TDI) are more powerful predictors of outcome compared with clinical data and standard Doppler-echocardiographic parameters. Background Tissue Doppler Imaging of basal or mitral annulus velocities provides rapid assessment of ventricular long axis function. But it is not known if TDI-derived velocities in systole and diastole add incremental value and are superior to the standard Doppler-echocardiographic measurements as a predictor of outcome. Methods The study population consisted of 518 subjects, 353 with cardiac disease and 165 normal subjects who had full Doppler two-dimensional–echocardiographic studies with measurement of mitral inflow velocities in early and late diastole, E-wave deceleration time (DT), peak systolic mitral annular velocity (Sm) early and late diastolic mitral annular velocity (Em and Am) by TDI, early diastolic flow propagation velocity, and standard chamber dimensions. All subjects were followed up for two years. The end point was cardiac death. Results Tissue Doppler Imaging mitral annulus systolic and diastolic velocities were all significantly lower in the non-survivors (all p Conclusions Mitral annulus velocity measured by TDI in early diastole gives incremental predictive power for cardiac mortality compared to clinical data and standard echocardiographic measurements. This easily available measurement adds significant value in the clinical management of cardiac patients.
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peak early diastolic mitral annulus velocity by tissue Doppler Imaging adds independent and incremental prognostic value
Journal of the American College of Cardiology, 2003Co-Authors: Mei Wang, Angela Yeemoon Wang, Yan Zhang, Gabriel W K Yip, Mui Kiu Tse, Peggo K W Lam, John E SandersonAbstract:OBJECTIVES The aim of this study was to ascertain if left ventricular mitral annulus velocities measured by tissue Doppler Imaging (TDI) are more powerful predictors of outcome compared with clinical data and standard Doppler-echocardiographic parameters. BACKGROUND Tissue Doppler Imaging of basal or mitral annulus velocities provides rapid assessment of ventricular long axis function. But it is not known if TDI-derived velocities in systole and diastole add incremental value and are superior to the standard Doppler-echocardiographic measurements as a predictor of outcome. METHODS The study population consisted of 518 subjects, 353 with cardiac disease and 165 normal subjects who had full Doppler two-dimensional-echocardiographic studies with measurement of mitral inflow velocities in early and late diastole, E-wave deceleration time (DT), peak systolic mitral annular velocity (Sm) early and late diastolic mitral annular velocity (Em and Am) by TDI, early diastolic flow propagation velocity, and standard chamber dimensions. All subjects were followed up for two years. The end point was cardiac death. RESULTS Tissue Doppler Imaging mitral annulus systolic and diastolic velocities were all significantly lower in the non-survivors (all p < 0.05) as was DT (p = 0.024). In the Cox model the best predictors of mortality were Em, Sm, Am, left ventricular ejection fraction, left ventricular mass, and left atrial diameter in systole (LADs). By backward stepwise analysis Em and LADs were the strongest predictors. After forcing the TDI measurements into the covariate model with clinical and mitral DT <0.16 s, Em provided significant incremental value for predicting cardiac mortality (p = 0.004). CONCLUSIONS Mitral annulus velocity measured by TDI in early diastole gives incremental predictive power for cardiac mortality compared to clinical data and standard echocardiographic measurements. This easily available measurement adds significant value in the clinical management of cardiac patients.
Yan Zhang - One of the best experts on this subject based on the ideXlab platform.
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tissue Doppler Imaging provides incremental prognostic value in patients with systemic hypertension and left ventricular hypertrophy
Journal of Hypertension, 2005Co-Authors: Mei Wang, Angela Yeemoon Wang, Pik Yuk Ho, Yan Zhang, Cheukman Yu, John E SandersonAbstract:ObjectivesWe sought to determine the prognostic value of left ventricular (LV) mitral annular velocities measured by tissue Doppler Imaging (TDI) in hypertensive patients with echocardiographic evidence of LV hypertrophy.BackgroundEcho LV hypertrophy and LV geometry provide additional predictive val
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peak early diastolic mitral annulus velocity by tissue Doppler Imaging adds independent and incremental prognostic value
Journal of the American College of Cardiology, 2003Co-Authors: Mei Wang, Angela Yeemoon Wang, Pik Yuk Ho, Yan Zhang, John E SandersonAbstract:Abstract Objectives The aim of this study was to ascertain if left ventricular mitral annulus velocities measured by tissue Doppler Imaging (TDI) are more powerful predictors of outcome compared with clinical data and standard Doppler-echocardiographic parameters. Background Tissue Doppler Imaging of basal or mitral annulus velocities provides rapid assessment of ventricular long axis function. But it is not known if TDI-derived velocities in systole and diastole add incremental value and are superior to the standard Doppler-echocardiographic measurements as a predictor of outcome. Methods The study population consisted of 518 subjects, 353 with cardiac disease and 165 normal subjects who had full Doppler two-dimensional–echocardiographic studies with measurement of mitral inflow velocities in early and late diastole, E-wave deceleration time (DT), peak systolic mitral annular velocity (Sm) early and late diastolic mitral annular velocity (Em and Am) by TDI, early diastolic flow propagation velocity, and standard chamber dimensions. All subjects were followed up for two years. The end point was cardiac death. Results Tissue Doppler Imaging mitral annulus systolic and diastolic velocities were all significantly lower in the non-survivors (all p Conclusions Mitral annulus velocity measured by TDI in early diastole gives incremental predictive power for cardiac mortality compared to clinical data and standard echocardiographic measurements. This easily available measurement adds significant value in the clinical management of cardiac patients.
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peak early diastolic mitral annulus velocity by tissue Doppler Imaging adds independent and incremental prognostic value
Journal of the American College of Cardiology, 2003Co-Authors: Mei Wang, Angela Yeemoon Wang, Yan Zhang, Gabriel W K Yip, Mui Kiu Tse, Peggo K W Lam, John E SandersonAbstract:OBJECTIVES The aim of this study was to ascertain if left ventricular mitral annulus velocities measured by tissue Doppler Imaging (TDI) are more powerful predictors of outcome compared with clinical data and standard Doppler-echocardiographic parameters. BACKGROUND Tissue Doppler Imaging of basal or mitral annulus velocities provides rapid assessment of ventricular long axis function. But it is not known if TDI-derived velocities in systole and diastole add incremental value and are superior to the standard Doppler-echocardiographic measurements as a predictor of outcome. METHODS The study population consisted of 518 subjects, 353 with cardiac disease and 165 normal subjects who had full Doppler two-dimensional-echocardiographic studies with measurement of mitral inflow velocities in early and late diastole, E-wave deceleration time (DT), peak systolic mitral annular velocity (Sm) early and late diastolic mitral annular velocity (Em and Am) by TDI, early diastolic flow propagation velocity, and standard chamber dimensions. All subjects were followed up for two years. The end point was cardiac death. RESULTS Tissue Doppler Imaging mitral annulus systolic and diastolic velocities were all significantly lower in the non-survivors (all p < 0.05) as was DT (p = 0.024). In the Cox model the best predictors of mortality were Em, Sm, Am, left ventricular ejection fraction, left ventricular mass, and left atrial diameter in systole (LADs). By backward stepwise analysis Em and LADs were the strongest predictors. After forcing the TDI measurements into the covariate model with clinical and mitral DT <0.16 s, Em provided significant incremental value for predicting cardiac mortality (p = 0.004). CONCLUSIONS Mitral annulus velocity measured by TDI in early diastole gives incremental predictive power for cardiac mortality compared to clinical data and standard echocardiographic measurements. This easily available measurement adds significant value in the clinical management of cardiac patients.
Angela Yeemoon Wang - One of the best experts on this subject based on the ideXlab platform.
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tissue Doppler Imaging provides incremental prognostic value in patients with systemic hypertension and left ventricular hypertrophy
Journal of Hypertension, 2005Co-Authors: Mei Wang, Angela Yeemoon Wang, Pik Yuk Ho, Yan Zhang, Cheukman Yu, John E SandersonAbstract:ObjectivesWe sought to determine the prognostic value of left ventricular (LV) mitral annular velocities measured by tissue Doppler Imaging (TDI) in hypertensive patients with echocardiographic evidence of LV hypertrophy.BackgroundEcho LV hypertrophy and LV geometry provide additional predictive val
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peak early diastolic mitral annulus velocity by tissue Doppler Imaging adds independent and incremental prognostic value
Journal of the American College of Cardiology, 2003Co-Authors: Mei Wang, Angela Yeemoon Wang, Pik Yuk Ho, Yan Zhang, John E SandersonAbstract:Abstract Objectives The aim of this study was to ascertain if left ventricular mitral annulus velocities measured by tissue Doppler Imaging (TDI) are more powerful predictors of outcome compared with clinical data and standard Doppler-echocardiographic parameters. Background Tissue Doppler Imaging of basal or mitral annulus velocities provides rapid assessment of ventricular long axis function. But it is not known if TDI-derived velocities in systole and diastole add incremental value and are superior to the standard Doppler-echocardiographic measurements as a predictor of outcome. Methods The study population consisted of 518 subjects, 353 with cardiac disease and 165 normal subjects who had full Doppler two-dimensional–echocardiographic studies with measurement of mitral inflow velocities in early and late diastole, E-wave deceleration time (DT), peak systolic mitral annular velocity (Sm) early and late diastolic mitral annular velocity (Em and Am) by TDI, early diastolic flow propagation velocity, and standard chamber dimensions. All subjects were followed up for two years. The end point was cardiac death. Results Tissue Doppler Imaging mitral annulus systolic and diastolic velocities were all significantly lower in the non-survivors (all p Conclusions Mitral annulus velocity measured by TDI in early diastole gives incremental predictive power for cardiac mortality compared to clinical data and standard echocardiographic measurements. This easily available measurement adds significant value in the clinical management of cardiac patients.
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peak early diastolic mitral annulus velocity by tissue Doppler Imaging adds independent and incremental prognostic value
Journal of the American College of Cardiology, 2003Co-Authors: Mei Wang, Angela Yeemoon Wang, Yan Zhang, Gabriel W K Yip, Mui Kiu Tse, Peggo K W Lam, John E SandersonAbstract:OBJECTIVES The aim of this study was to ascertain if left ventricular mitral annulus velocities measured by tissue Doppler Imaging (TDI) are more powerful predictors of outcome compared with clinical data and standard Doppler-echocardiographic parameters. BACKGROUND Tissue Doppler Imaging of basal or mitral annulus velocities provides rapid assessment of ventricular long axis function. But it is not known if TDI-derived velocities in systole and diastole add incremental value and are superior to the standard Doppler-echocardiographic measurements as a predictor of outcome. METHODS The study population consisted of 518 subjects, 353 with cardiac disease and 165 normal subjects who had full Doppler two-dimensional-echocardiographic studies with measurement of mitral inflow velocities in early and late diastole, E-wave deceleration time (DT), peak systolic mitral annular velocity (Sm) early and late diastolic mitral annular velocity (Em and Am) by TDI, early diastolic flow propagation velocity, and standard chamber dimensions. All subjects were followed up for two years. The end point was cardiac death. RESULTS Tissue Doppler Imaging mitral annulus systolic and diastolic velocities were all significantly lower in the non-survivors (all p < 0.05) as was DT (p = 0.024). In the Cox model the best predictors of mortality were Em, Sm, Am, left ventricular ejection fraction, left ventricular mass, and left atrial diameter in systole (LADs). By backward stepwise analysis Em and LADs were the strongest predictors. After forcing the TDI measurements into the covariate model with clinical and mitral DT <0.16 s, Em provided significant incremental value for predicting cardiac mortality (p = 0.004). CONCLUSIONS Mitral annulus velocity measured by TDI in early diastole gives incremental predictive power for cardiac mortality compared to clinical data and standard echocardiographic measurements. This easily available measurement adds significant value in the clinical management of cardiac patients.
S M Bierig - One of the best experts on this subject based on the ideXlab platform.
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tissue Doppler Imaging a useful echocardiographic method for the cardiac sonographer to assess systolic and diastolic ventricular function
Journal of The American Society of Echocardiography, 2001Co-Authors: Alan D Waggoner, S M BierigAbstract:Tissue Doppler Imaging (TDI) has evolved to become a useful noninvasive method that can complement other echocardiographic techniques in the assessment of left ventricular myocardial velocities in a variety of clinical conditions. Color 2-dimensional and color M-mode TDI are used for quantification of systolic myocardial velocities during myocardial ischemia at rest and with pharmacologic stress testing. Spectral pulsed TDI can provide measurements of regional systolic and diastolic myocardial velocities, and it is particularly useful in the identification of abnormalities of left ventricular diastolic relaxation. This review summarizes the clinical applications of TDI to promote understanding of its utility in the evaluation of left ventricular myocardial function.
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tissue Doppler Imaging a useful echocardiographic method for the cardiac sonographer to assess systolic and diastolic ventricular function
Journal of The American Society of Echocardiography, 2001Co-Authors: Alan D Waggoner, S M BierigAbstract:Abstract Tissue Doppler Imaging (TDI) has evolved to become a useful noninvasive method that can complement other echocardiographic techniques in the assessment of left ventricular myocardial velocities in a variety of clinical conditions. Color 2-dimensional and color M-mode TDI are used for quantification of systolic myocardial velocities during myocardial ischemia at rest and with pharmacologic stress testing. Spectral pulsed TDI can provide measurements of regional systolic and diastolic myocardial velocities, and it is particularly useful in the identification of abnormalities of left ventricular diastolic relaxation. This review summarizes the clinical applications of TDI to promote understanding of its utility in the evaluation of left ventricular myocardial function. (J Am Soc Echocardiogr 2001;14:1143-52.)