Comparison of blood velocity between Transcranial Doppler and numerical method in the patient-specific Circle of Willis with aneurysm

Autor:	Mehdi Farhoudi, Mahsa Jahed, Farzan Ghalichi
Rok vydání:	2019
Předmět:	Male Models Anatomic medicine.medical_specialty Ultrasonography Doppler Transcranial Cerebral arteries Biomedical Engineering Hemodynamics Biomaterials Aneurysm Internal medicine medicine.artery medicine Humans Child Aged medicine.diagnostic_test business.industry Numerical analysis General Medicine Blood flow Cerebral Arteries medicine.disease Cerebral Angiography Transcranial Doppler Cerebrovascular Circulation Angiography cardiovascular system Cardiology Circle of Willis business Blood Flow Velocity Software
Zdroj:	Bio-Medical Materials and Engineering. 30:427-438
ISSN:	1878-3619 0959-2989
Popis:	Background The development of any disturbance in the Circle of Willis (COW) can change the hemodynamics of blood flow and result in damage to the vascular system. Clinical methods such as TCD for diagnosing an aneurysm or growth factors and rupture can measure blood velocity. Several factors influence the accuracy of TCD that can lead to wrong evaluations and affect the treatment planning. Objective In this study, the conformity between CFD and TCD was accomplished for investigating the accuracy of the clinical method (TCD) in different vessels of the Circle of Willis. Methods The realistic three-dimensional models have been produced from angiography images. Considering fluid-structure interaction, a domain of the blood flow and vessel wall has been simulated by the ANSYS.CFX software. The velocity in the cerebral arteries has been calculated and compared with the velocity acquired from TCD. Results According to the findings, there were significant differences between the results obtained from computational fluid dynamics and Doppler test in different vessels of the Circle of Willis. In some areas, differences close to 80 cm/s were also reported. Conclusion According to the results, there are possibilities of errors in carrying out a Doppler test in some arteries and can lead to wrong estimates and ultimately incorrect decisions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::114a9872fce35b92d628a16eb88ce428 https://doi.org/10.3233/bme-191064 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.