Recommendations for quantification of Doppler echocardiography: A report from the Doppler quantification task force of the nomenclature and standards committee of the American Society of Echocardiography

Quiñones, Miguel Á.; Otto, Catherine M.; Stoddard, Marcus F.; Waggoner, Alan D.; Zoghbi, William A.

doi:10.1067/mje.2002.120202

Cited by 1,928 publications

(1,445 citation statements)

References 74 publications

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“…All subjects underwent Doppler echocardiography examinations administered by two experienced cardiologists according to the standard technique established by the American Society of Echocardiography (37). The sPAP was estimated based on the modified Bernoulli equation as follows:…”

Section: Doppler Echocardiographymentioning

confidence: 99%

Dynamic perfusion MRI: Capability for evaluation of disease severity and progression of pulmonary arterial hypertension in patients with connective tissue disease

Ohno

Koyama

Nogami

et al. 2008

Magnetic Resonance Imaging

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Purpose:To prospectively evaluate the capability of dynamic perfusion MRI for assessment of disease severity and progression to pulmonary arterial hypertension (PAH) in connective tissue disease (CTD) patients. Materials and Methods:In all, 18 gender-and agematched CTD patients without and with PAH and nine healthy volunteers underwent dynamic perfusion MRI, Doppler echocardiography, and pulmonary function test. Disease severity of CTD was assessed in terms of diffusing capacity for carbon monoxide (%DL CO ) and estimated systolic pulmonary arterial pressure (sPAP), and progression of PAH in terms of pulmonary arterial pressure (mPAP) and pulmonary vascular resistance (PVR). From calculated pulmonary perfusion parameter maps, means of pulmonary blood flow (mPBF), pulmonary blood volume (mPBV), and mean transit time (mMTT) were determined as averages of all region of interest (ROI) measurements. To determine disease severity in CTD, all parameters were statistically correlated with sPAP and %DL CO . To determine progression to PAH, all parameters were statistically correlated with mPAP and PVR.Results: All pulmonary perfusion parameters correlated significantly with sPAP and %DL CO (P Ͻ 0.05). mPBF and mPBV correlated significantly with mPAP and moderately with PVR (P Ͻ 0.05). Conclusion:Dynamic perfusion MRI can be used for assessment of disease severity and progression of PAH in CTD patients.

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Section: Doppler Echocardiographymentioning

confidence: 99%

Dynamic perfusion MRI: Capability for evaluation of disease severity and progression of pulmonary arterial hypertension in patients with connective tissue disease

Ohno

Koyama

Nogami

et al. 2008

Magnetic Resonance Imaging

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“…From the standard apical 4-chamber view, spectral Doppler signals of mitral inflow and pulmonary vein flow were obtained according to guidelines of the American Society of Echocardiography. 6 Patterns of LV diastolic dysfunction were based on mitral inflow E/A ratios of peak velocities at early rapid filling (E) and late filling due to atrial contraction (A) and systolic or LV diastolic dominant pulmonary venous flow using velocity time integral. Based on previously published criteria, 4 normal LV diastolic pattern was defined as E/A ratio of 0.75 to 1.5 and systolic dominant pulmonary venous flow.…”

Section: Diastolic Functionmentioning

confidence: 99%

Prevalence and Prognosis of Asymptomatic Left Ventricular Diastolic Dysfunction in Ambulatory Patients With Coronary Heart Disease

Ren

Ristow

et al. 2007

The American Journal of Cardiology

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The association of asymptomatic left ventricular (LV) diastolic dysfunction with cardiovascular outcomes in ambulatory patients with coronary heart disease (CHD) and no history of heart failure (HF) was examined. LV diastolic HF predicts adverse cardiovascular outcomes. However, the prevalence and prognosis of asymptomatic LV diastolic dysfunction in patients with established CHD in the absence of clinical HF is unknown. Six hundred ninety-three patients with stable CHD, normal systolic function (LV ejection fraction ≥50%), and no history of HF were evaluated. Echocardiography was used to classify LV diastolic function, and Cox proportional hazards models were used to evaluate the association of LV diastolic dysfunction with cardiovascular outcomes during 3 years of follow-up. Of 693 subjects with normal systolic function and no history of HF, 455 (66%) had normal LV diastolic function, 166 (24%) had mild LV diastolic dysfunction, and 72 (10%) had moderate to severe LV diastolic dysfunction. After multivariable adjustment, the presence of moderate to severe LV diastolic dysfunction was strongly predictive of incident hospitalization for HF (hazard ratio 6.3, 95% confidence interval 2.4 to 16.1, p = 0.0003) and death from heart disease (HR 3.9, 95% confidence interval 1.0 to 14.8, p = 0.05). In conclusion, moderate to severe LV diastolic dysfunction was present in 10% of patients with stable CHD with normal ejection fraction and no history of HF and predicts subsequent hospitalization for HF and death from heart disease. Patients with asymptomatic LV diastolic dysfunction may benefit from more aggressive therapy to prevent or delay the development of HF.Left ventricular (LV) diastolic heart failure (HF) accounts for nearly half of all HF diagnoses and is associated with increased morbidity and mortality. [1][2][3] The prevalence and prognosis of asymptomatic LV diastolic dysfunction is unclear because most studies of the association between LV diastolic dysfunction and adverse outcomes examined patients with clinical HF. 1-3 One previous study examined the association of LV diastolic dysfunction with cardiovascular outcomes in patients without known heart disease, 4 but the prevalence and *Corresponding author: Tel.: 415-377-1404; fax: 415-563-5939., xiushui@yahoo.com (X. Ren). NIH Public Access NIH-PA Author ManuscriptNIH-PA Author Manuscript NIH-PA Author Manuscript prognosis of asymptomatic LV diastolic dysfunction in outpatients with stable coronary heart disease (CHD) is unknown. We evaluated the prevalence and prognosis of asymptomatic LV diastolic dysfunction in ambulatory patients with CHD with preserved systolic function and no history of HF. We hypothesized that asymptomatic LV diastolic dysfunction would be an independent predictor of adverse cardiovascular outcomes in these patients. Methods PatientsPatients were enrolled in the Heart and Soul Study, a prospective cohort study investigating the influence of psychosocial factors on cardiovascular events. Methods were described previously. 5 Ad...

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“…A key parameter when estimating pressure gradients over a stenosis is the maximum velocity of the blood during systole, from which the peak pressure gradient can be derived using the simplified or modified Bernoulli equation [3,4]. Accurate determination of the maximum velocity in a stenotic jet is thus of clinical importance for correct assessment of the severity of the occlusion.…”

Section: Introductionmentioning

confidence: 99%

“…Although well-established, DE as a technique has a number of limitations, such as the need for correct angulation between the Doppler beam and the flow jet and dependence on the geometry of the restriction [4,6].…”

Section: Introductionmentioning

confidence: 99%

Volumetric velocity measurements in restricted geometries using spiral sampling: a phantom study

Nilsson

Revstedt

Heiberg

et al. 2014

Magn Reson Mater Phy

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Object:To evaluate the accuracy of maximum velocity measurements using volumetric phase contrast imaging with spiral readouts in a stenotic flow phantom. Materials and Methods:In a phantom model, maximum velocity, flow, pressure gradient and streamline visualizations were evaluated using volumetric phase contrast MRI with velocity encoding in one (extending on current clinical practice) and three directions (for characterization of the flow field) using spiral readouts.Results of maximum velocity and pressure drop were compared to CFD simulations (Computational Fluid Dynamics), as well as corresponding low-TE Cartesian data. Flow was compared to 2D throughplane PC upstream from the restriction. Results:Results obtained with 3D throughplane PC as well as 4D PC at shortest TE using spiral readout showed excellent agreements with the maximum velocity values obtained with CFD (<1% for both methods), while larger deviations were seen using Cartesian readouts (-2% and 13%, respectively).Peak pressure drop calculated from 3D throughplane PC and 4D PC spiral sequences was 14% and 13% overestimated compared to CFD. Conclusion:Identification of the maximum velocity location as well as accurate velocity quantification can be obtained in stenotic regions using short-TE spiral volumetric PC imaging.3

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Recommendations for quantification of Doppler echocardiography: A report from the Doppler quantification task force of the nomenclature and standards committee of the American Society of Echocardiography

Cited by 1,928 publications

References 74 publications

Dynamic perfusion MRI: Capability for evaluation of disease severity and progression of pulmonary arterial hypertension in patients with connective tissue disease

Dynamic perfusion MRI: Capability for evaluation of disease severity and progression of pulmonary arterial hypertension in patients with connective tissue disease

Prevalence and Prognosis of Asymptomatic Left Ventricular Diastolic Dysfunction in Ambulatory Patients With Coronary Heart Disease

Volumetric velocity measurements in restricted geometries using spiral sampling: a phantom study

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