Application of an OCT-based 3D reconstruction framework to the hemodynamic assessment of an ulcerated coronary artery plaque

Francesco Burzotta, Lorenzo Genuardi, Cristina Aurigemma, Susanna Migliori, Claudio Chiastra, Marco Bologna, Eros Montin, Gabriele Dubini, Luca Mainardi, Francesco Migliavacca

Risultato della ricerca: Contributo in rivistaArticolo in rivista

4 Citazioni (Scopus)

Abstract

The rupture of a vulnerable plaque, known as ulceration, is the most common cause of myocardial infarction. It can be recognized by angiographic features, such as prolonged intraluminal filling and delayed clearance of the contrast liquid. The diagnosis of such an event is an open challenge due to the limited angiographic resolution and acquisition frequency. The treatment of ulcerated plaques is an open discussion, due to the high heterogeneity and the lack of evidences that support particular strategies. Therefore, the therapeutic decision should follow a detailed investigation with angiography and intravascular imaging, such as optical coherence tomography (OCT), to locate the lesion, besides its geometric features and the lumen occlusion severity. The aim of this study is the application of a framework for the in-silico analysis of the disrupted hemodynamics due to an ulcerated lesion. The study employed a validated OCT-based reconstruction methodology and computational fluid dynamics (CFD) simulations for the computation of local hemodynamic quantities, such as wall shear stress. The reported findings, such as disrupted pre-operative flow conditions, proved the applicability of the developed framework for CFD analyses on complicated patient-specific anatomies that feature ulcerated plaques. The prediction of lesion expansion and the clinical decision making can benefit from a reliable computation of wall shear stress distributions that result from the peculiar anatomy of the lesion. The application of intravascular OCT imaging, high fidelity 3D reconstructions and CFD simulations might guide the treatment of such pathology.
Lingua originaleEnglish
pagine (da-a)74-81
Numero di pagine8
RivistaMEDICAL ENGINEERING & PHYSICS
Volume78
DOI
Stato di pubblicazionePubblicato - 2020

Keywords

  • Computational fluid dynamics
  • Coronary artery
  • Image segmentation
  • Optical coherence tomography
  • Patient-specific modelling
  • Pre-operative assessment
  • Ulcerated plaque
  • Wall shear stress

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