- 作者：Mariola Szulik ; MD ; Christos J. Pappas ; MD ; Ruxandra Jurcut ; MD ; PhD ; Michael Magro ; MD ; Elke Peeters ; MD ; Kaatje Goetschalckx ; MD ; PhD ; Frank Rademakers ; MD ; PhD ; Walter Desmet ; MD ; PhD ; Jens-Uwe Voigt ; MD ; PhD ; jens.uwe.voigt@gmx.net
- 关键词：Ejection fraction ; Tracking ; Visual assessment ; LV systolic function ; Echocardiography ; MRI
- 刊名：Journal of the American Society of Echocardiography
- 出版年：2011
- 出版时间：October 2011
- 年：2011
- 卷：24
- 期：10
- 页码：1092-1100
- 全文大小：1741 K
Background
The aim of this study was to determine the feasibility, accuracy, and reproducibility of a novel tracking-based echocardiographic ejection fraction (EF) assessment method in comparison with traditional methods based on magnetic resonance imaging and echocardiography.Methods
In a prospective assessment, apical echocardiographic grayscale image loops from 81 patients were read in random order by four experienced readers, blinded to any data of the cases. In three separate sessions, EFs were estimated using biplane tracking-based assessment and according to the modified Simpson¡¯s rule, as well as by visual interpretation in three apical views. Data were compared with a reference EF derived from echocardiography and magnetic resonance imaging.
Results
On average, no significant difference was found between EF estimates of the different methods. Tracking-based EF assessments were possible in 90 % of the patients. Tracking-based EF assessments showed slightly higher deviations from the reference EF than the modified Simpson¡¯s rule, while interobserver and intraobserver variability of tracking-based assessment were significantly better. Visual interpretation allowed the fastest EF assessment. Tracking-based EF assessment was approximately twice as fast as the modified Simpson¡¯s rule.
Conclusions
Tracking-based EF assessment is feasible, has lower interobserver and intraobserver variability, and is faster than traditional echocardiographic EF quantification. Its minimal demand on user interaction makes it a favorable alternative to traditional echocardiographic approaches, with a particular clinical advantage when reliable follow-up measurements are needed.