How accurately, reproducibly, and efficiently can we measure left ventricular indices using M-mode, 2-dimensional, and 3-dimensional echocardiography in children? (original) (raw)

New generation 3-dimensional echocardiography for left ventricular volumetric and functional measurements: comparison with cardiac magnetic resonance

European journal of echocardiography : the journal of the Working Group on Echocardiography of the European Society of Cardiology, 2006

Non-invasive assessment of left ventricular (LV) structure and function is important in the evaluation of cardiac patients. This study was designed to test the accuracy and reproducibility of new generation 3-dimensional echocardiography (3DE) in measuring volumetric and functional LV indices as compared with current "gold standard" of non-invasive cardiac imaging, cardiac magnetic resonance (CMR). Sixty-four subjects with good acoustic windows, including 40 cardiac patients with LV ejection fraction (EF)<45%, 14 patients with EF>45% and 10 normal volunteers underwent 3DE using a commercially available Philips Sonos 7500 scanner equipped with a matrix phase-array x4 xMATRIX transducer, and CMR on a 1.5 T Signa CV/i scanner (GE Medical Systems). Volumetric assessment was performed with analytical 4D-LV-Analysis software (TomTec) for 3DE and MRI-Mass software (Medis) for CMR. We found no significant differences in LV end-diastolic volume (EDV), end-systolic volume (ESV...

Feasibility of a two-dimensional echocardiographic method for the clinical assessment of right ventricular volume and function in children

Journal of The American Society of Echocardiography, 1996

The relative ease of acquisition and safety of twodimensional echocardiography has established it as the mainstay for routine cardiac imaging. Translation of imaging data into useful quantitative information, however, requires fitting the ventricle to a specific geometric model. Because of its complex shape and anterior position, many attempts at right ventricular quantitation by two-dimensional echocardiography have been criticized as impractical and not reproducible. A simple method incorporating subcostal and apical imaging was introduced in 1984. This approach appeared to combine accuracy and practicability but was never validated in a clinical setting because of the difficulties of subcostal imaging in adults. This study assessed the feasibility and accuracy of this technique in the pediatric population. Results of volume compari-Accurate measurement of right ventricular (RV) size and performance is useful in the management of many forms of congenital and acquired heart disease. 1-r A rapid, reproducible, noninvasive method for quantitative assessment of the right ventricle, available to the clinician, would therefore be advantageous. In recent years, sophisticated techniques for RV quantitation including ultrafast computed tomography and magnetic resonance imaging s-13 have been developed. However, these modalities are limited by relative expense, lack of portability, frequent need for sedation, and prolonged length of time necessary for data acquisition and analysis. Threedimensional echocardiographic techniques for vol-From the Columbia University College of Physlcians and Surgeons, the son to values derived by magnetic resonance imaging were r = 0.96, standard error of the estimate (SEE) = 19.3 ml, and mean difference = 15 + 19.4 ml and r = 0.97, SEE = 12.3 ml, and bias = 5 -+ 11.8 ml for diastolic and systolic volumes, respectively. Comparison of estimates of ejection fraction with magnetic resonance imaging demonstrated r = 0.90, SEE = 5.9%, and bias = 3% + 5.7%. Interobserver and intraobserver

Quantitative analysis of the left ventricle by echocardiography in daily practice: as simple as possible, but not simpler

Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography, 2014

Accurate assessment of left ventricular (LV) size and function is among the most important requisites of clinical cardiology. Echocardiographic quantitation of LV volumes and ejection fraction (EF) is of paramount importance for diagnosis, risk stratification, and treatment of cardiovascular diseases, and not surprisingly, it remains the most frequent indication for performing echocardiography. 1 However, which is the most effective method of LV quantitative analysis by ultrasound is still unsolved.

Three-dimensional echocardiography for left ventricular quantification: fundamental validation and clinical applications

Netherlands heart journal : monthly journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation, 2011

One of the earliest applications of clinical echocardiography is evaluation of left ventricular (LV) function and size. Accurate, reproducible and quantitative evaluation of LV function and size is vital for diagnosis, treatment and prediction of prognosis of heart disease. Early three-dimensional (3D) echocardiographic techniques showed better reproducibility than two-dimensional (2D) echocardiography and narrower limits of agreement for assessment of LV function and size in comparison to reference methods, mostly cardiac magnetic resonance (CMR) imaging, but acquisition methods were cumbersome and a lack of user-friendly analysis software initially precluded widespread use. Through the advent of matrix transducers enabling real-time three-dimensional echocardiography (3DE) and improvements in analysis software featuring semi-automated volumetric analysis, 3D echocardiography evolved into a simple and fast imaging modality for everyday clinical use. 3DE provides the possibility to ...

Real-time three-dimensional echocardiography for measurement of left ventricular volumes

The American Journal of Cardiology, 1999

Left ventricular (LV) volumes are important prognostic indexes in patients with heart disease. Although several methods can evaluate LV volumes, most have important intrinsic limitations. Real-time 3-dimensional echocardiography (RT3D echo) is a novel technique capable of instantaneous acquisition of volumetric images. The purpose of this study was to validate LV volume calculations with RT3D echo and to determine their usefulness in cardiac patients. To this end, 4 normal subjects and 21 cardiac patients underwent magnetic resonance imaging (MRI) and RT3D echo on the same day. A strong correlation was found between LV volumes calculated with MRI and with RT3D echo (r ‫؍‬ 0.91; y ‫؍‬ 20.1 ؉ 0.71x; SEE 28 ml). LV volumes obtained with MRI were greater than those obtained with RT3D echo (126 ؎ 83 vs 110 ؎ 65 ml; p ‫؍‬ 0.002), probably due to the fact that heart rate during MRI acquisition was lower than that during RT3D echo examination (62 ؎ 11 vs 79 ؎ 16 beats/min; p ‫؍‬ 0.0001). Analysis of intra-and interobserver variability showed strong indexes of agreement in the measurement of LV volumes with RT3D echo. Thus, LV volume measurements with RT3D echo are accurate and reproducible. This technique expands the use of ultrasound for the noninvasive evaluation of cardiac patients and provides a new tool for the investigational study of cardiovascular disease. ᮊ1999 by Excerpta Medica, Inc.