Functional Imaging and Modeling of the Heart
12th International Conference, FIMH 2023, Lyon, France, June 19–22, 2023, Proceedings
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Chapter and Conference Paper
Assessment of the Evolution of Temporal Segmental Strain in a Longitudinal Study of Myocardial Infarction
In this study, we propose an approach for the assessment of the evolution of heart function in a population of ST-elevation myocardial infarction (STEMI) patients. The patients were imaged using cine MRI with ...
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Chapter and Conference Paper
Which Anatomical Directions to Quantify Local Right Ventricular Strain in 3D Echocardiography?
Technological advances in image quality and post-processing have led to the better clinical adoption of 3D echocardiography to quantify cardiac function. However, the right ventricle (RV) raises specific chall...
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Book and Conference Proceedings
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Chapter and Conference Paper
Characterizing Myocardial Ischemia and Reperfusion Patterns with Hierarchical Manifold Learning
We aim at better understanding the mechanisms of ischemia and reperfusion, in the context of acute myocardial infarction. For this purpose, imaging and in particular magnetic resonance imaging are of great val...
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Chapter and Conference Paper
Reinforcement Learning for Active Modality Selection During Diagnosis
Diagnosis through imaging generally requires the combination of several modalities. Algorithms for data fusion allow merging information from different sources, mostly combining all images in a single step. In...
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Chapter and Conference Paper
Influence of Morphometric and Mechanical Factors in Thoracic Aorta Finite Element Modeling
Evaluation of mechanical properties from thoracic aorta finite element (FE) modeling can help to better stratify patients in need of intervention. This paper assesses the influence of various factors in the co...
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Chapter and Conference Paper
Hierarchical Multi-modality Prediction Model to Assess Obesity-Related Remodelling
The diagnosis of cardiovascular illnesses uses multiple modalities in order to obtain a complete and as robust as possible assessment of the heart. However, when addressing distinct pathologies, not all inform...
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Article
Hyperquaternion Conformal Groups
The paper gives a new representation of conformal groups in n dimensions in terms of hyperquaternions defined as tensor products of quaternion algebras (or a subalgebra thereof). Being Clifford algebras, hyperqua...
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Article
Open AccessRegional myocardial function at preclinical disease stage of hypertrophic cardiomyopathy in female gene variant carriers
We recently showed more severe diastolic dysfunction at the time of myectomy in female compared to male patients with obstructive hypertrophic cardiomyopathy. Early recognition of aberrant cardiac contracility...
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Article
Dual Hyperquaternion Poincaré Groups
A new representation of the Poincaré groups in n dimensions via dual hyperquaternions is developed, hyperquaternions being defined as a tensor product of quaternion algebras (or a subalgebra thereof). This formal...
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Chapter and Conference Paper
Systematic Study of Joint Influence of Angular Resolution and Noise in Cardiac Diffusion Tensor Imaging
Diffusion tensor imaging (DTI) is a promising imaging technique to non-invasively study diffusion properties and fiber structures of myocardial tissues. Previous studies have investigated the influence of nois...
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Chapter and Conference Paper
Investigation of the Impact of Normalization on the Study of Interactions Between Myocardial Shape and Deformation
Myocardial shape and deformation are two relevant descriptors for the study of cardiac function and can undergo strong interactions depending on diseases. Manifold learning provides low dimensional representat...
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Chapter and Conference Paper
Population-Based Personalization of Geometric Models of Myocardial Infarction
We propose a strategy to perform population-based personalization of a model, to overcome the limits of case-based personalization for generating virtual populations from models that include randomness. We for...
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Chapter and Conference Paper
Learning Interactions Between Cardiac Shape and Deformation: Application to Pulmonary Hypertension
Cardiac shape and deformation are two relevant descriptors for the characterization of cardiovascular diseases. It is also known that strong interactions exist between them depending on the disease. In clinica...
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Article
Open AccessMyocardial adaptation after surgical therapy differs for aortic valve stenosis and hypertrophic obstructive cardiomyopathy
Surgical therapies in aortic valve stenosis (AVS) and hypertrophic obstructive cardiomyopathy (HOCM) aim to relief intraventricular pressure overload and improve clinical outcome. It is currently unknown to wh...
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Chapter and Conference Paper
Hyperquaternions: An Efficient Mathematical Formalism for Geometry
Hyperquaternions being defined as a tensor product of quaternion algebras (or a subalgebra thereof), they constitute Clifford algebras endowed with an associative exterior product providing an efficient mathem...
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Chapter and Conference Paper
Domain Adaptation via Dimensionality Reduction for the Comparison of Cardiac Simulation Models
We tackle the determination of a relevant data s...
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Article
Hyperquaternions: A New Tool for Physics
A hyperquaternion formulation of Clifford algebras in n dimensions is presented. The hyperquaternion algebra is defined as a tensor product of quaternion algebras
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Article
Open AccessComparison of strain imaging techniques in CRT candidates: CMR tagging, CMR feature tracking and speckle tracking echocardiography
Parameters using myocardial strain analysis may predict response to cardiac resynchronization therapy (CRT). As the agreement between currently available strain imaging modalities is unknown, three different m...
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Chapter and Conference Paper
Comparison of Different Strain-Based Parameters to Identify Human Left Ventricular Myocardial Infarct During Diastole: A 3D Finite-Element Study
Assessment of myocardial damage is important to obtain an accurate prognosis after myocardial infarction. Myocardial strains have been shown to be good indicators of the myocardial viability. Strain analysis h...
