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Author
Debora Gil; Ruth Aris; Agnes Borras; Esmitt Ramirez; Rafael Sebastian; Mariano Vazquez
Title
Influence of fiber connectivity in simulations of cardiac biomechanics
Type
Journal Article
Year
2019
Publication
International Journal of Computer Assisted Radiology and Surgery
Abbreviated Journal
IJCAR
Volume
14
Issue
1
Pages
63–72
Keywords
Cardiac electromechanical simulations; Diffusion tensor imaging; Fiber connectivity
Abstract
PURPOSE:
Personalized computational simulations of the heart could open up new improved approaches to diagnosis and surgery assistance systems. While it is fully recognized that myocardial fiber orientation is central for the construction of realistic computational models of cardiac electromechanics, the role of its overall architecture and connectivity remains unclear. Morphological studies show that the distribution of cardiac muscular fibers at the basal ring connects epicardium and endocardium. However, computational models simplify their distribution and disregard the basal loop. This work explores the influence in computational simulations of fiber distribution at different short-axis cuts.
METHODS:
We have used a highly parallelized computational solver to test different fiber models of ventricular muscular connectivity. We have considered two rule-based mathematical models and an own-designed method preserving basal connectivity as observed in experimental data. Simulated cardiac functional scores (rotation, torsion and longitudinal shortening) were compared to experimental healthy ranges using generalized models (rotation) and Mahalanobis distances (shortening, torsion).
RESULTS:
The probability of rotation was significantly lower for ruled-based models [95% CI (0.13, 0.20)] in comparison with experimental data [95% CI (0.23, 0.31)]. The Mahalanobis distance for experimental data was in the edge of the region enclosing 99% of the healthy population.
CONCLUSIONS:
Cardiac electromechanical simulations of the heart with fibers extracted from experimental data produce functional scores closer to healthy ranges than rule-based models disregarding architecture connectivity.
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Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
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Notes
IAM; 600.096; 601.323; 600.139; 600.145
Approved
no
Call Number
Admin @ si @ GAB2019a
Serial
3133
Permanent link to this record
Author
Marta Diez-Ferrer; Debora Gil; Elena Carreño; Susana Padrones; Samantha Aso; Vanesa Vicens; Noelia Cubero de Frutos; Rosa Lopez Lisbona; Carles Sanchez; Agnes Borras; Antoni Rosell
Title
Positive Airway Pressure-Enhanced CT to Improve Virtual Bronchoscopic Navigation
Type
Journal Article
Year
2017
Publication
European Respiratory Journal
Abbreviated Journal
ERJ
Volume
Issue
Pages
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Notes
IAM
Approved
no
Call Number
Admin @ si @ DGC2017b
Serial
3632
Permanent link to this record
Author
Marta Diez-Ferrer; Debora Gil; Elena Carreño; Susana Padrones; Samantha Aso; Vanesa Vicens; Cubero Noelia; Rosa Lopez Lisbona; Carles Sanchez; Agnes Borras; Antoni Rosell
Title
Positive Airway Pressure-Enhanced CT to Improve Virtual Bronchoscopic Navigation
Type
Journal Article
Year
2016
Publication
Chest Journal
Abbreviated Journal
CHEST
Volume
150
Issue
4
Pages
1003A
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
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Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Notes
IAM; 600.096; 600.075
Approved
no
Call Number
Admin @ si @ DGC2016
Serial
3099
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