elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Validity, Accuracy and Reproducibility of Three-Dimenional Real-Time Echocardiography (RT3DE) for Paediatric Values

Putzke, M. and Breuer, J. and Herberg, U. (2011) Validity, Accuracy and Reproducibility of Three-Dimenional Real-Time Echocardiography (RT3DE) for Paediatric Values. World Congress of the World Federation for Ultrasound in Medicine and Biology, Bonn. (Unpublished)

Full text not available from this repository.

Abstract

Purpose Objective of the study was to determine validity, accuracy and reliability of three-dimensional real-time echocardiography (RT3DE) for paediatric values. Material & Methods Using matrix transducers (X7-2, X3-1, Philips), RT3DE was performed on different calibrated phantoms (CIRS 055A, 055 – tissue-mimicking, AIUM 100 mm – non tissue-mimicking). In a systemic variation of parameters on data acquisition and analysis including different 3D workstations (TomTec, QLab), sources of errors were determined and compared to 2D echocardiography. Results Concerning distance measurement, there was a small underestimation of distances (mean relative error: 2D -0.7±1%; 3D -2.7±1%). The orientation of the object had significant effect on distance calculation (vertical: 3.1±1.6% vs. horizontal 0.9±0.6%; p<0.001). Device settings had minor influence. Considering the volume measurements, there was a significant underestimation of the actual volumes by single-plane Simpson: 2D was -8.6±4.3% and 3D was -10.4±0.9%; 3D volumetry using TomTec and QLab was -13.25±1.8%. Concerning data acquisition, gain and compression had significant impact on 2D volume measurements (-3.99±2.2% vs. -13.6±1.7%; p<0.003). Concerning data calculation, different definition of boundary (on vs. within) led to a significant change in results (-17.7±0.9% vs. -24.5±2.3%; p<0.001). There was no statistical significant difference between the 3D workstations used. Conclusion RT3DE is a reliable method for paediatric measurements. Because factors influencing boundary identification (gain, compression, border definition) and transducer orientation have significant impact on distance, area and volume calculation, stanstandardized protocols are mandatory to avoid errors in clinical practice and research.

Document Type:Conference or Workshop Item (Speech)
Title:Validity, Accuracy and Reproducibility of Three-Dimenional Real-Time Echocardiography (RT3DE) for Paediatric Values
Authors:
AuthorsInstitution or Email of Authors
Putzke, M.Matthias.Putzke@dlr.de
Breuer, J.UNSPECIFIED
Herberg, U.UNSPECIFIED
Date:2011
Status:Unpublished
Keywords:Real-Time, Echocardiography, RT3DE, pediatric, validity, accuracy, reproducibility, cardiology, ultrasound, volume, distance, Qlab
Event Title:World Congress of the World Federation for Ultrasound in Medicine and Biology
Event Location:Bonn
Event Type:Other
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignement
DLR - Program:no assignment
DLR - Research theme (Project):other
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Flight Physiology
Deposited By: Patrick Slupkowski
Deposited On:07 Oct 2011 13:33
Last Modified:07 Oct 2011 13:33

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.