Computational fluid dynamics study of the effect of transverse sinus stenosis on the blood flow pattern in the ipsilateral superior curve of the sigmoid sinus

Objective To investigate the effect of different types of transverse sinus stenosis on blood flow patterns in the ipsilateral superior curve of the sigmoid sinus. Methods According to the morphology of transverse and sigmoid sinus sections in pulsatile tinnitus patients, ten idealized models with different degrees and positions of transverse sinus stenosis were constructed. Computational fluid dynamics simulations were performed to compare the hemodynamic characteristics among these models. Follow-up images of previous cases were included, which preliminarily confirmed the hypothesis that bone plate erosion of the sigmoid sinus sulcus is related to blood flow impingement. Results Blood flow impingement on the superior curve of the sigmoid sinus wall intensified with increasing degree of stenosis and decreased with increasing distance between the stenosis and the sigmoid sinus. The impact zone was generally confined to the anterior and lateral walls of the superior curve of the sigmoid sinus. When the stenosis was located far from the middle of the transverse sinus, the blood flow impingement on the sigmoid sinus wall was very weak. Conclusions When stenosis is located far from the sigmoid sinus, the causes of tinnitus should be comprehensively considered instead of assuming that stenosis is the main cause. Bone plate erosion of the sigmoid sinus sulcus was promoted by blood flow impingement. Key Points • Ten idealized models with different degrees and positions of stenosis were constructed. • The causes of pulsatile tinnitus should be comprehensively considered. • Sigmoid sinus plate dehiscence was promoted by blood flow impingement..

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:31

Enthalten in:

European radiology - 31(2021), 8 vom: 25. Jan., Seite 6286-6294

Sprache:

Englisch

Beteiligte Personen:

Han, Yanjing [VerfasserIn]
Xia, Jun [VerfasserIn]
Jin, Long [VerfasserIn]
Qiao, Aike [VerfasserIn]
Su, Tianhao [VerfasserIn]
Li, ZhenFeng [VerfasserIn]
Xiong, Jianping [VerfasserIn]
Wang, Haochen [VerfasserIn]
Zhang, Zhiyuan [VerfasserIn]

Links:

Volltext [lizenzpflichtig]

Themen:

Bone plates
Constriction
Cranial sinuses
Hemodynamics
Pulsatile tinnitus

RVK:

RVK Klassifikation

Anmerkungen:

© European Society of Radiology 2021

doi:

10.1007/s00330-020-07630-x

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

OLC2126540383

Zugang & Verfügbarkeit




Zugehörige Publikationen/Bände

    Haven't found what you're looking for?