Wall enhancement of intracranial saccular and fusiform aneurysms may differ in intensity and extension: a pilot study using 7-T high-resolution black-blood MRI

2019 ◽  
Vol 30 (1) ◽  
pp. 301-307 ◽  
Author(s):  
Xinke Liu ◽  
Zihao Zhang ◽  
Chengcheng Zhu ◽  
Junqiang Feng ◽  
Peng Liu ◽  
...  
2021 ◽  
pp. svn-2020-000636
Author(s):  
Miaoqi Zhang ◽  
Fei Peng ◽  
Xin Tong ◽  
Xin Feng ◽  
Yunduo Li ◽  
...  

Background and purposePrevious studies have reported about inflammation processes (IPs) that play important roles in aneurysm formation and rupture, which could be driven by blood flow. IPs can be identified using aneurysmal wall enhancement (AWE) on high-resolution black-blood MRI (BB-MRI) and blood flow haemodynamics can be demonstrated by four-dimensional-flow MRI (4D-flow MRI). Thus, this study investigated the associations between AWE and haemodynamics in unruptured intracranial aneurysms (IA) by combining 4D-flow MRI and high-resolution BB-MRI.Materials and methodsBetween April 2014 and October 2017, 48 patients with 49 unruptured IA who underwent both 4D-flow MRI and high-resolution BB-MRI were retrospectively included in this study. The haemodynamic parameters demonstrated using 4D-flow MRI were compared between different AWE patterns using the Kruskal-Wallis test and ordinal regression.ResultsThe results of Kruskal-Wallis test showed that the average wall shear stress in the IA (WSSavg-IA), maximum through-plane velocity in the adjacent parent artery, inflow jet patterns and the average vorticity in IA (vorticityavg-IA) were significantly associated with the AWE patterns. Ordinal regression analysis identified WSSavg-IA (p=0.002) and vorticityavg-IA (p=0.033) as independent predictors of AWE patterns.ConclusionA low WSS and low average vorticity were independently associated with a high AWE grade for IAs larger than 4 mm. Therefore, WSS and average vorticity could predict AWE and circumferential AWE.


2005 ◽  
Vol 12 (12) ◽  
pp. 1521-1526 ◽  
Author(s):  
SeshaSailaja Anumula ◽  
Hee Kwon Song ◽  
Alexander C. Wright ◽  
Felix W. Wehrli

2016 ◽  
Vol 58 (6) ◽  
pp. 569-576 ◽  
Author(s):  
Florian Schwarz ◽  
Frederik F. Strobl ◽  
Clemens C. Cyran ◽  
Andreas D. Helck ◽  
Martin Hartmann ◽  
...  

2019 ◽  
Vol 40 (6) ◽  
pp. 954-959 ◽  
Author(s):  
A.S. Al-Smadi ◽  
R.N. Abdalla ◽  
A.H. Elmokadem ◽  
A. Shaibani ◽  
M.C. Hurley ◽  
...  

2010 ◽  
Vol 3 (11) ◽  
pp. 1127-1135 ◽  
Author(s):  
Jin Hur ◽  
Jaeseok Park ◽  
Young Jin Kim ◽  
Hye-Jeong Lee ◽  
Hyo Sup Shim ◽  
...  

Author(s):  
Konstanze Guggenberger ◽  
Axel Joachim Krafft ◽  
Ute Ludwig ◽  
Patrick Vogel ◽  
Samer Elsheik ◽  
...  

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