We have located links that may give you full text access.
JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Evaluation of Left Ventricular Volumes and Function by Real Time Three-Dimensional Echocardiography in Children with Functional Single Left Ventricle: A Comparison between QLAB and TomTec.
Echocardiography 2015 October
BACKGROUND: Real time three-dimensional echocardiography (RT3DE) provides a reliable analysis of left ventricular (LV) volume. Despite a wide spectrum of tracking algorithms presently available, which software is most suitable for evaluating functional single left ventricle (FLSV) is unknown. Herein, we compared two of the most commonly used 3DE algorithms for quantification of LV volumes in the pediatric population with FLSV.
METHODS: Thirty-six children with FLSV were prospectively enrolled. The LV volume analysis was performed on QLAB 8.1 (semiautomated border tracking) and TomTec 4D LV 3.0 (manual dominant border tracking) and compared with MRI as the reference standard.
RESULTS: 3DE volume quantification was achieved for 32 children with QLAB and 34 children with TomTec. Analysis time was much shorter for QLAB than TomTec (4.8 ± 1.2 vs. 6.3 ± 1.8 minutes, P < 0.05). Ejection fraction (EF) by either 3DE modality was significantly lower than the published normal values (P < 0.01 for each). End-diastolic volume (EDV), end-systolic volume (ESV), stroke volume, and EF calculated by both 3DE modalities underestimated MRI values. Compared to QLAB, TomTec showed better correlation and smaller intertechnique differences with MRI (the 95% limits of agreement, EDV: -20.84 to 5.18 mL in QLAB, -10.66 to 1.84 mL in TomTec; ESV: -8.94 to 3.07 mL in QLAB, -2.45 to 0.98 mL in TomTec; SV: -13.31 to 3.45 mL in QLAB, -9.34 to 2.0 mL in TomTec; EF: -12.07 to 7.76% in QLAB, -9.64 to 1.52% in TomTec), TomTec was more reproducible with better intraclass correlation coefficients and variation coefficients.
CONCLUSIONS: Both 3DE modalities tend to underestimate LV volumes, but the correlation of LV volumes and EF between 3DE and MRI still holds well. Despite a longer operating time, TomTec analysis is more accurate and reproducible.
METHODS: Thirty-six children with FLSV were prospectively enrolled. The LV volume analysis was performed on QLAB 8.1 (semiautomated border tracking) and TomTec 4D LV 3.0 (manual dominant border tracking) and compared with MRI as the reference standard.
RESULTS: 3DE volume quantification was achieved for 32 children with QLAB and 34 children with TomTec. Analysis time was much shorter for QLAB than TomTec (4.8 ± 1.2 vs. 6.3 ± 1.8 minutes, P < 0.05). Ejection fraction (EF) by either 3DE modality was significantly lower than the published normal values (P < 0.01 for each). End-diastolic volume (EDV), end-systolic volume (ESV), stroke volume, and EF calculated by both 3DE modalities underestimated MRI values. Compared to QLAB, TomTec showed better correlation and smaller intertechnique differences with MRI (the 95% limits of agreement, EDV: -20.84 to 5.18 mL in QLAB, -10.66 to 1.84 mL in TomTec; ESV: -8.94 to 3.07 mL in QLAB, -2.45 to 0.98 mL in TomTec; SV: -13.31 to 3.45 mL in QLAB, -9.34 to 2.0 mL in TomTec; EF: -12.07 to 7.76% in QLAB, -9.64 to 1.52% in TomTec), TomTec was more reproducible with better intraclass correlation coefficients and variation coefficients.
CONCLUSIONS: Both 3DE modalities tend to underestimate LV volumes, but the correlation of LV volumes and EF between 3DE and MRI still holds well. Despite a longer operating time, TomTec analysis is more accurate and reproducible.
Full text links
Related Resources
Trending Papers
Challenges in Septic Shock: From New Hemodynamics to Blood Purification Therapies.Journal of Personalized Medicine 2024 Februrary 4
Molecular Targets of Novel Therapeutics for Diabetic Kidney Disease: A New Era of Nephroprotection.International Journal of Molecular Sciences 2024 April 4
Perioperative echocardiographic strain analysis: what anesthesiologists should know.Canadian Journal of Anaesthesia 2024 April 11
The 'Ten Commandments' for the 2023 European Society of Cardiology guidelines for the management of endocarditis.European Heart Journal 2024 April 18
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app