Search results for " Statistical shape analysis"

showing 3 items of 3 documents

On the Left Ventricular Remodeling of Patients with Stenotic Aortic Valve: A Statistical Shape Analysis

2021

The left ventricle (LV) constantly changes its shape and function as a response to pathological conditions, and this process is known as remodeling. In the presence of aortic stenosis (AS), the degenerative process is not limited to the aortic valve but also involves the remodeling of LV. Statistical shape analysis (SSA) offers a powerful tool for the visualization and quantification of the geometrical and functional patterns of any anatomic changes. In this paper, a SSA method was developed to determine shape descriptors of the LV under different degrees of AS and thus to shed light on the mechanistic link between shape and function. A total of n=86 patients underwent computed tomography (…

Aortic valveTechnologymedicine.medical_specialtyQH301-705.5left ventricle0206 medical engineeringstatistical shape analysisBioengineeringaortic valve stenosis02 engineering and technology030204 cardiovascular system & hematologyArticle03 medical and health sciences0302 clinical medicineInternal medicinemedicineIn patientBiology (General)Settore ING-IND/15 - Disegno E Metodi Dell'Ingegneria IndustrialeVentricular remodelingbusiness.industryTStatistical shape analysisSettore ING-IND/34 - Bioingegneria IndustrialeBaseline modelmedicine.disease020601 biomedical engineeringStenosismedicine.anatomical_structureAortic valve stenosis Left ventricle Statistical shape analysisVentriclePrincipal component analysisCardiologybusinessBioengineering
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Atlas-Based Evaluation of Hemodynamic in Ascending Thoracic Aortic Aneurysms

2021

Atlas-based analyses of patients with cardiovascular diseases have recently been explored to understand the mechanistic link between shape and pathophysiology. The construction of probabilistic atlases is based on statistical shape modeling (SSM) to assess key anatomic features for a given patient population. Such an approach is relevant to study the complex nature of the ascending thoracic aortic aneurysm (ATAA) as characterized by different patterns of aortic shapes and valve phenotypes. This study was carried out to develop an SSM of the dilated aorta with both bicuspid aortic valve (BAV) and tricuspid aortic valve (TAV), and then assess the computational hemodynamic of virtual models ob…

Fluid Flow and Transfer ProcessesTechnologyQH301-705.5Process Chemistry and TechnologyTPhysicsQC1-999General Engineeringstatistical shape analysisSettore ING-IND/34 - Bioingegneria IndustrialeEngineering (General). Civil engineering (General)Computer Science Applicationscomputational fluid dynamicChemistryascending aortic aneurysmcardiovascular systemGeneral Materials Scienceascending aortic aneurysm; statistical shape analysis; computational fluid dynamicAscending aortic aneurysm Computational fluid dynamic Statistical shape analysisTA1-2040Biology (General)InstrumentationQD1-999Applied Sciences; Volume 12; Issue 1; Pages: 394
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Anthropometry: An R Package for Analysis of Anthropometric Data

2017

The development of powerful new 3D scanning techniques has enabled the generation of large up-to-date anthropometric databases which provide highly valued data to improve the ergonomic design of products adapted to the user population. As a consequence, Ergonomics and Anthropometry are two increasingly quantitative fields, so advanced statistical methodologies and modern software tools are required to get the maximum benefit from anthropometric data. This paper presents a new R package, called Anthropometry, which is available on the Comprehensive R Archive Network. It brings together some statistical methodologies concerning clustering, statistical shape analysis, statistical archetypal an…

Statistics and ProbabilityComputer sciencePopulationstatistical shape analysis02 engineering and technologycomputer.software_genre01 natural sciences010104 statistics & probabilitySoftware0202 electrical engineering electronic engineering information engineeringR; anthropometric data; clustering; statistical shape analysis; archetypal analysis; data depth0101 mathematicsarchetypal analysisCluster analysiseducationlcsh:Statisticslcsh:HA1-4737education.field_of_studyAnthropometric databusiness.industryStatistical shape analysisRHuman factors and ergonomicsAnthropometryanthropometric dataVignette020201 artificial intelligence & image processingData miningStatistics Probability and Uncertaintydata depthbusinesscomputerSoftwareclusteringJournal of Statistical Software
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