Pediatric cardiology: 3D ultrasound volume measurement of heart chambers with TOMTEC
The 3D functions of the TOMTEC software package helped to establish reference values for volume ultrasound diagnosis of congenital heart defects in children.*
Munich, Germany, May 9th 2019: Today, MRI is the gold standard when it comes to diagnosing complex heart defects of the left or right ventricle in pediatric patients since relevant parameters such as volume or ejection fraction cannot be reliably and reproducibly determined via ultrasound. But now Dr. Kai Thorsten Laser, Deputy Director of the Pediatric Heart Center and Center for Congenital Heart Defects at the Heart and Diabetes Center NRW in Bad Oeynhausen, and his team are developing a workflow for valid 3D ultrasound functional measurement and quantification of both ventricles. In the context of this work a study was conducted to establish the first ever reference values for 3D ultrasound diagnostics – a real breakthrough in pediatric cardiology.
For children an MRI exam is very stressful and the 45-minute procedure to evaluate ventricles requires sedation or anesthesia. Consequently, the data pool with regard to MRI ventricular quantification is poor.
“These are two very good reasons to have a closer look at the possibilities modern 3D ultrasound offers with regard to the diagnosis of congenital heart defects in children,” says Kai Thorsten Laser, who has been using the TOMTEC software package for ventricular volume measurements and was impressed with what he saw. “In order to be able to use this technology routinely in children with congenital heart defects such as aortic valvular disease or tetralogy of Fallot we needed to ascertain that ultrasound delivers results in terms of validity, precision and reproducibility that are comparable to MRI results.”
Good software delivers comparable 3D ultrasound results
Blinded exams of a total of 38 children (17 healthy children, 21 patients) provided the necessary insights: “We found that 3D ultrasound with our specifically designed analysis workflow generated only minute differences compared to the MRI results. Then, in a joint project with facilities in Bonn and Munich, we collected data from 360 healthy children in different age groups and used the results to establish reference values for the evaluation of ventricles. Now the data pool for 3D ultrasound is much larger than the one for MRI exams.”
The fact that the 3D ultrasound of the left and right ventricle delivered convincing results is to no small measure due to the software the cardiologists used: “In order to generate reproducible and valid results we have to stick to a certain workflow. This entails volume measurements of the right ventricle in 2D sections and the adaptation of the 3D echo results. When dealing with highly individual and complex issues such as pediatric heart defects, AI-supported automation reaches its limits.” The TOMTEC team responded to the cardiologists’ ideas and tweaked the system to allow viewing the entire data set. Now adjustments and precise measurement of the right ventricle can be performed.
From niche to routine usage
At Dr. Laser’s Heart Center 3D ultrasound with TOMTEC and reference values has become a standard component in the diagnostic work-up of congenital heart defects. However, this procedure is not being used extensively throughout the country since not many office-based cardiologists have access to the technology. Moreover the analysis of the 3D ultrasound exams takes 5 to 10 minutes longer than the conventional 2D procedure. But Dr. Kai Thorsten Laser makes the case for 3D ultrasound: “In an MRI exam we need to sedate the children which is very stressful for the young patients. Moreover when looking at the MRI exam and analysis times 3D ultrasound is clearly superior.”
* Validation and Reference Values for Three-Dimensional Echocardiographic Right Ventricular Volumetry in Children: A Multicenter Study. Laser KT, Karabiyik A, Körperich H, Horst JP, Barth P, Kececioglu D, Burchert W, DallaPozza R, Herberg U.
J Am Soc Echocardiogr. 2018 Sep;31(9):1050-1063. doi: 10.1016/j.echo.2018.03.010. Epub 2018 Jun 19.
Real-Time Three-Dimensional Echocardiography of the Left Ventricle-Pediatric Percentiles and Head-to-Head Comparison of Different Contour-Finding Algorithms: A Multicenter Study. Krell K, Laser KT, Dalla-Pozza R, Winkler C, Hildebrandt U, Kececioglu D, Breuer J, Herberg U.
J Am Soc Echocardiogr. 2018 Jun;31(6):702-711.e13. doi: 10.1016/j.echo.2018.01.018. Epub 2018 Mar 28.
TOMTEC Imaging Systems GmbH, headquarters located in Munich, Germany, is a worldwide leader for medical imaging software solutions. Specializing in cardiology, it offers state-of-the-art solutions for clinical customers and industry partners.
The products encompass a wide range of 2D and 3D/4D technology for visualization, automated analysis, quantification, reporting and image management. TOMTEC products are available for adult, pediatric and fetal cardiology, obstetrics, gynecology, radiology and vascular diagnostics. Moreover, TOMTEC offers a sustainable full-service department in sales and an education program with best-practice sharing among professionals.
The company claim “Excellence in Digital Healthcare” represents striving for excellent image and analysis quality, ease-of-use, reproducibility of automated measurements and an extensive service and education offering.
The company maintains close working relationships with many leading universities and research institutes around the world.
In July 2017, TOMTEC became a part of the Ultrasound business of Royal Philips (NYSE: PHG; AEX: PHIA). TOMTEC is continuing its vendor independent product portfolio.
Visit TOMTEC’s website at www.tomtec.de
For further information, please contact:
|Claudia von CHossy
TOMTEC Imaging Systems GmbH
o +49 89 321 75 585
TOMTEC Imaging Systems GmbH
o +49 89 321 75 518