Assessment of Left Ventricular Volumes and Function by Real Time Three‐Dimensional Echocardiography in a Pediatric Population: A TomTec versus QLAB Comparison

Hascoët, Sébastien; Brierre, Gilles; Caudron, Guillaume; Cardin, Christelle; Bongard, Vanina; Acar, Philippe

doi:10.1111/j.1540-8175.2010.01235.x

Cited by 39 publications

(40 citation statements)

References 35 publications

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“…They can be assessed by tissue deformation imaging using speckle tracking, CMR tagging [22] as well as by three dimensional techniques to measure changes in blood pool volumes throughout the cardiac cycle. With the introduction of model-based analysis algorithms motional details such as parametric maps for dynamic visualization of contraction time or assessment of mechanical dyssynchrony are now accessible [7,16,23,24] which are easy and quick to apply but accuracy and reliability of functional LV parameters still have to be investigated further. It was the aim of this study to consolidate the promising volumetric results in healthy pediatric individuals assessed by RT3DE in a former study [5] by examining asymmetrically shaped gel phantoms and a patient group with predominantly dilated left ventricles.…”

Section: Discussionmentioning

confidence: 99%

“…Especially RT3DE tools provide a timesaving workflow generating volumes as well as volume-time curves in order to assess dyssynchrony and regional function. They use model-dependent contour tracking algorithms or speckle-tracking based approaches [7,[14][15][16] . In summary they provide reliable and reproducible data about LV-EF with mild or moderate underestimation of volumes.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Model versus non-model based left ventricular volumetry - A matter of imaging modality or quantification software?

Laser¹,

Barth²,

Bunge³

et al. 2013

JBGC

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Objective: To compare the modalities 3D-echocardiography (RT3DE) and cardiac magnetic resonance as well as semiautomatic non-model-based and model-based quantification software (SWP-MRI and SWT-MRI) regarding accuracy and agreement of left ventricular functional indices.Methods: 9 asymmetrically shaped gel phantoms (range: 20-350ml), 24 healthy children (age=11.4±3.3y) and 11 patients with abnormally shaped left ventricles (22.0±17.0y) were prospectively investigated. 3D-echocardiography was performed using a Vivid 7 ultrasound machine (V3 matrix transducer); postprocessing was done with a model-based analysis strategy (SWT-echo). CMR datasets were obtained using a multi-slice multi-phase steady-state-free-precision acquisition (TR/TE/flip=2.8msecs/1.4msecs/60°) with a 1.5T MR system. Volume quantification was done using the same model-based software for CMR as well as non model-based software based on the summation of discs method. Agreement of EDV, ESV and EF between SWT-echo, SWP-mri vs. SWT-mri was determined by Bland Altman analysis.Results: Phantom study revealed high accuracy (<1%) for SWT-echo and SWP-mri as well as a moderate underestimation for SWT-MRI (13%). Agreement between SWP-mri and SWT-echo was superior in volunteers [mean; limits-ofagreement: EDV(5.3%; -20.1 to 30.8%), ESV(-1.3%; -41.6 to 38.9%), EF(4.0%; -12.0 to 19.9%)] with only slight underestimation by RT3DE in patients [EDV(11.5%; -18.5 to 41.4%), ESV(13.0%; -5.4 to 31.5%), EF(-6.9%; -49.9 to 36.1%)]. Comparing SWT-echo with SWT-mri revealed volume underestimation of EDV (9.8; -20.5 to 40.0%) and overestimation of ESV (-9.6; -60.1 to 41.0%) in volunteers by SWT-mri resulting in underestimation of EF (12.6;-9.6 to 34.9). In patients minor differences between SWT-echo and SWT-mri were observed [EDV (0.6%; -28.2 to 29.4%), ESV (-2.4%; -38.2 to 33.4%), EF(9.3%; -35.7 to 54.3%)]. Compared to our reference SWP-mri both model-based techniques moderately underestimated EDV (SWT-MRI 12.1%; -2.1 to 26.4%, SWT-echo 11.5%; -18.5 to 41.4%) and ESV Key wordsMagnetic resonance imaging, Three-dimensional echocardiography, Left ventricular function, Pediatrics, Quantitative evaluation BackgroundAccurate assessment of left ventricular (LV) indices is indispensable for children with cardiac disease having diagnostic and prognostic implications [1] . This is especially important for the decision making in small borderline ventricles as well as in dilated ventricles because of volume overload regarding the kind and timing of further treatment. Most non-invasive imaging modalities such as 2D-Echocardiography are using geometric assumptions and therefor lack accuracy in the assessment of the patients with abnormally shaped ventricles [2] . Currently, cardiovascular magnetic resonance imaging (CMR) is regarded as the first line imaging technique for the evaluation of ventricular volumes, mass and function both in normally shaped as well as in abnormally shaped ventricles as stated by a consensus panel report [3] because of its high accuracy, reproducibi...

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Model versus non-model based left ventricular volumetry - A matter of imaging modality or quantification software?

Laser¹,

Barth²,

Bunge³

et al. 2013

JBGC

View full text Add to dashboard Cite

show abstract

“…Numerous validation studies have demonstrated that 3DE compares favorably with other independent reference standards such as CMR and is superior for assessing left ventricular volumes, mass, and ejection fractions in adults. [49][50][51][52][53][54][55] We have also found that RE3VD is more accurate and reproducible than M-mode and the 2D Simpson's biplane method and is as efficient as 2DE in children. 32 The validation studies in the pediatric population are listed in Table I.…”

Section: Assessment Of Volumes and Function Of LV Rv And Svmentioning

confidence: 94%

Real Time Three‐Dimensional Echocardiography for Evaluation of Congenital Heart Defects: State of the Art

et al. 2012

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Real time three-dimensional echocardiography (RT3DE) has been increasingly used in the diagnosis and assessment of congenital heart disease. A growing body of literature suggests that this new technology can be used as an integrated approach to assess the morphology of simple and complex congenital heart defects, flow abnormality, and left, right, and single ventricular function both qualitatively and quantitatively. This review summarizes the available evidence for the use of RT3DE in each of these areas. Future technology refinement in RT3DE and development of practice guidelines will increase the utilization of this new technology as a valuable tool to compliment 2D echocardiography/Doppler in clinical care and research to improve the care and outcome of congenital heart disease.

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“…Hascoet et al have compared QLAB 6.0[Phillips] which is a semi-automated system with TomTec 4D LV which is primary manual tracking with semi-automated border detection. They found that 3D volume assessment was feasible using both systems with good correlation of LV volume measurements [8]. When performing 3D volumetric assessment, particularly with semi automated border detection, stitching artefacts will impair the ability of the software to track the image.…”

Section: Three Dimensional Echocardiographymentioning

confidence: 99%

Advanced Echocardiographic Imaging of the Congenitally Malformed Heart

Black

Vettukattil²

2013

CCR

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There have been significant advancements in the ability of echocardiography to provide both morphological and functional information in children with congenitally malformed hearts. This progress has come through the development of improved technology such as matrix array probes and software which allows for the off line analysis of images to a high standard. This article focuses on these developments and discusses some newer concepts in advanced echocardiography such is multi-planar reformatting [MPR] and tissue motion annular displacement [TMAD].Our aim is to discuss important aspects related to the quality and reproducibility of data, to review the most recent published data regarding advanced echocardiography in the malformed heart and to guide the reader to appropriate text for overcoming the technical challenges of using these methods. Many of the technical aspects of image acquisition and post processing have been discussed in recent reviews by the authors and we would urge readers to study these texts to gain a greater understanding [1]. The quality of the two dimensional image is paramount in both strain analysis and three dimensional echocardiography. An awareness of how to improve image quality is vital to acquiring accurate and usable data.Three dimensional echocardiography (3DE) is an attempt to visualise the dynamic morphology of the heart. Although published media is the basis for theoretical knowledge of how to practically acquire images, electronic media [eg.] is the only way of visualising the advantages of this technology in real time.It is important to be aware of the limitations of this technology and that much of the data gleaned from using these methods is at a research stage and not yet in regular clinical practice.

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Assessment of Left Ventricular Volumes and Function by Real Time Three‐Dimensional Echocardiography in a Pediatric Population: A TomTec versus QLAB Comparison

Cited by 39 publications

References 35 publications

Model versus non-model based left ventricular volumetry - A matter of imaging modality or quantification software?

Model versus non-model based left ventricular volumetry - A matter of imaging modality or quantification software?

Real Time Three‐Dimensional Echocardiography for Evaluation of Congenital Heart Defects: State of the Art

Advanced Echocardiographic Imaging of the Congenitally Malformed Heart

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