Change search
ReferencesLink to record
Permanent link

Direct link
Automated analysis of color tissue Doppler velocity recordings of the fetal myocardium using a new algorithm
KTH, School of Technology and Health (STH), Medical Engineering.
Show others and affiliations
2015 (English)In: Cardiovascular Ultrasound, ISSN 1476-7120, Vol. 13, 39Article in journal (Refereed) Published
Abstract [en]

Background: Tissue Doppler imaging (TDI) can be used to assess fetal cardiac function and it has been shown to detect changes associated with hypoxia in animal models. However, the analysis is cumbersome and time consuming. The main objective of this study was to evaluate the feasibility of a new algorithm developed for the automated analysis of color TDI velocity recordings of the fetal myocardium. Furthermore, we wanted to assess the effect of different sizes of region of interests (ROI) on the measurement of cardiac cycle time intervals and myocardial velocities at different gestations. Methods: This study included analysis of 261 TDI velocity traces obtained from 17 fetal echocardiographic examinations performed longitudinally on five pregnant women. Cine-loops of fetal cardiac four chamber view were recorded with color overlay in TDI mode and stored for off-line analysis. ROIs of different sizes were placed at the level of the atrioventricular plane in the septum and in the right and left ventricular walls of the fetal heart. An automated algorithm was then used for the analysis of velocity traces. Results: Out of the total 261 velocity traces, it was possible to analyze 203 (78 %) traces with the automated algorithm. It was possible to analyze 93 % (81/87) of traces recorded from the right ventricular wall, 82 % (71/87) from the left ventricular wall and 59 % (51/87) from the septum. There was a trend towards decreasing myocardial velocities with increasing ROI length. However, the cardiac cycle time intervals were similar irrespective of which ROI size was used. Conclusions: An automated analysis of color TDI fetal myocardial velocity traces seems feasible, especially for measuring cardiac cycle time intervals, and has the potential for clinical application.

Place, publisher, year, edition, pages
2015. Vol. 13, 39
Keyword [en]
Tissue Doppler imaging, Fetal cardiac function, Region of interest (ROI), Automated algorithm
National Category
Cardiac and Cardiovascular Systems
URN: urn:nbn:se:kth:diva-173429DOI: 10.1186/s12947-015-0034-3ISI: 000360033200001PubMedID: 26310927OAI: diva2:855140

QC 20150918

Available from: 2015-09-18 Created: 2015-09-11 Last updated: 2015-09-18Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Johnson, Jonas
By organisation
Medical Engineering
In the same journal
Cardiovascular Ultrasound
Cardiac and Cardiovascular Systems

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 10 hits
ReferencesLink to record
Permanent link

Direct link