Wall Shear Stress-Based Hemodynamic Descriptors in the Abdominal Aorta Bifurcation: Analysis of a Case Study
Publish place: Journal of Applied Fluid Mechanics، Vol: 14، Issue: 6
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JAFM-14-6_006
تاریخ نمایه سازی: 8 دی 1400
Abstract:
The knowledge of hemodynamic behaviour in the abdominal aorta artery bifurcation is of great importance for the early diagnosis of several cardiovascular diseases common in this bifurcation. The work developed focuses on a case study of hemodynamic in the abdominal aorta artery bifurcation, based on a realistic ۳D geometric model reconstructed from ۲D medical images of a real patient. Hemodynamic quantities based on the wall shear stress (WSS) of the abdominal aorta bifurcation are analysed and is presented an alternative analysis of the well-established stress hemodynamic descriptors to identify specific zones of the artery with a higher probability of developing cardiovascular diseases. The individual analysis of different zones of the artery allowed to obtain information that can remain masked when whole artery is considered as a single zone. The reported results provide a correlation between the analysed stress hemodynamic descriptors and the area of the wall artery. Then, the aim of this work is the identification of regions at the luminal surface subject to atherosusceptible WSS phenotypes. For the patient studied, the analysis presented allowed the identification of the patient's propensity to develop atherosclerosis, according to the hemodynamic descriptors time-averaged WSS (TAWSS), oscillatory shear index (OSI), and relative residence time (RRT). Thus, this work offers a new way of looking to the stress hemodynamic descriptors.
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Authors
A. Soares
ECT/UTAD – School of Science and Technology, University of Trás-os-Montes e Alto Douro, Vila Real, ۵۰۰۰-۸۰۱, Portugal
F. Carvalho
ECT/UTAD – School of Science and Technology, University of Trás-os-Montes e Alto Douro, Vila Real, ۵۰۰۰-۸۰۱, Portugal
A. Leite
ECT/UTAD – School of Science and Technology, University of Trás-os-Montes e Alto Douro, Vila Real, ۵۰۰۰-۸۰۱, Portugal