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Left atrial volumetric assessment using a novel automated framework for 3D echocardiography: a multi-centre analysis.
Almeida, Nuno; Papachristidis, Alexandros; Pearson, Peter; Sarvari, Sebastian Imre; Engvall, Jan; Edvardsen, Thor; Monaghan, Mark; Gérard, Olivier; Samset, Eigil; D'hooge, Jan.
Afiliación
  • Almeida N; Lab. on Cardiovascular Imaging and Dynamics, KU Leuven, Leuven, Belgium.
  • Papachristidis A; GE Vingmed Ultrasound AS, Horten, Norway.
  • Pearson P; Department of Non-Invasive Cardiology, King's College Hospital, Denmark Hill, London SE5 9RS, UK.
  • Sarvari SI; Department of Non-Invasive Cardiology, King's College Hospital, Denmark Hill, London SE5 9RS, UK.
  • Engvall J; Department of Cardiology, Center for Cardiological Innovation, Oslo University Hospital, Rikshospitalet, University of Oslo, Oslo, Norway.
  • Edvardsen T; Department of Clinical Physiology, Linköping University, Linköping, Sweden.
  • Monaghan M; Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden.
  • Gérard O; Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.
  • Samset E; Department of Cardiology, Center for Cardiological Innovation, Oslo University Hospital, Rikshospitalet, University of Oslo, Oslo, Norway.
  • D'hooge J; Department of Non-Invasive Cardiology, King's College Hospital, Denmark Hill, London SE5 9RS, UK.
Eur Heart J Cardiovasc Imaging ; 18(9): 1008-1015, 2017 Sep 01.
Article en En | MEDLINE | ID: mdl-27550659
ABSTRACT

AIMS:

This study aims at validating a software tool for automated segmentation and quantification of the left atrium (LA) from 3D echocardiography. METHODS AND

RESULTS:

The LA segmentation tool uses a dual-chamber model of the left side of the heart to automatically detect and track the atrio-ventricular plane and the LA endocardium in transthoracic 3D echocardiography. The tool was tested in a dataset of 121 ultrasound images from patients with several cardiovascular pathologies (in a multi-centre setting), and the resulting volumes were compared with those assessed manually by experts in a blinded analysis using conventional contouring. Bland-Altman analysis showed good agreement between the automated method and the manual references, with differences (mean ± 1.96 SD) of 0.5 ± 5.7 mL for LA minimum volume and -1.6 ± 9.7 mL for LA maximum volume (comparable to the inter-observer variability of manual tracings). The automated tool required no user interaction in 93% of the recordings, while 4% required a single click and only 2% required contour adjustments, reducing considerably the amount of time and effort required for LA volumetric analysis.

CONCLUSION:

The automated tool was validated in a multi-centre setting, providing quantification of the LA volume over the cardiac cycle with minimal user interaction. The results of the automated analysis were in agreement with those estimated manually by experts. This study shows that such approach has clinical utility for the assessment of the LA morphology and function, automating and facilitating the time-consuming task of analysing 3D echocardiographic recordings.
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Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Interpretación de Imagen Asistida por Computador / Función del Atrio Izquierdo / Ecocardiografía Tridimensional / Atrios Cardíacos Tipo de estudio: Clinical_trials / Diagnostic_studies / Etiology_studies / Guideline / Incidence_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Límite: Aged / Female / Humans / Male / Middle aged Idioma: En Revista: Eur Heart J Cardiovasc Imaging Año: 2017 Tipo del documento: Article País de afiliación: Bélgica

Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Interpretación de Imagen Asistida por Computador / Función del Atrio Izquierdo / Ecocardiografía Tridimensional / Atrios Cardíacos Tipo de estudio: Clinical_trials / Diagnostic_studies / Etiology_studies / Guideline / Incidence_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Límite: Aged / Female / Humans / Male / Middle aged Idioma: En Revista: Eur Heart J Cardiovasc Imaging Año: 2017 Tipo del documento: Article País de afiliación: Bélgica