Model-based generation of large databases of cardiac images: synthesis of pathological cine MR sequences from real healthy casesReportar como inadecuado




Model-based generation of large databases of cardiac images: synthesis of pathological cine MR sequences from real healthy cases - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

1 CREATIS - Centre de recherche en applications et traitement de l-image pour la santé 2 ASCLEPIOS - Analysis and Simulation of Biomedical Images CRISAM - Inria Sophia Antipolis - Méditerranée

Abstract : Collecting large databases of annotated medical images is crucial for the validation and testing of feature extraction, statistical analysis and machine learning algorithms. Recent advances in cardiac electromechanical modeling and image synthesis provided a framework to generate synthetic images based on realistic mesh simulations. Nonetheless, their potential to augment an existing database with large amounts of synthetic cases requires further investigation. We build upon these works and propose a revised scheme for synthesizing pathological cardiac sequences from real healthy sequences. Our new pipeline notably involves a much easier registration problem to reduce potential artifacts, and takes advantage of mesh correspondences to generate new data from a given case without additional registration. The output sequences are thoroughly examined in terms of quality and usability on a given application: the assessment of myocardial viability, via the generation of 465 synthetic cine MR sequences 15 healthy and 450 with pathological tissue viability random location, extent and grade, up to myocardial infarct. We demonstrate that our methodology i improves state-of-the-art algorithms in terms of realism and accuracy of the simulated images, and ii is well-suited for the generation of large databases at small computational cost.

Keywords : Image synthesis and simulation large database for machine learning validation myocardial infarct biomechanical modeling magnetic resonance.





Autor: Nicolas Duchateau - Maxime Sermesant - Hervé Delingette - Nicholas Ayache -

Fuente: https://hal.archives-ouvertes.fr/



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