High-resolution Vessel Wall Magnetic Resonance Imaging in Intracranial Aneurysms and Brain Arteriovenous Malformations

2016 ◽  
Vol 25 (2) ◽  
pp. 49-55 ◽  
Author(s):  
Charles C. Matouk ◽  
Branden J. Cord ◽  
Jacky Yeung ◽  
Ajay Malhotra ◽  
Michele H. Johnson ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Arteriovenous Malformations ◽  
Vessel Wall ◽  
Intracranial Aneurysms ◽  
Resonance Imaging ◽  
Brain Arteriovenous Malformations

scholarly journals High-Resolution Vessel Wall Magnetic Resonance Imaging of Small Unruptured Intracranial Aneurysms

2021 ◽  
Vol 10 (2) ◽  
pp. 225
Author(s):  
Łukasz Zwarzany ◽  
Ernest Tyburski ◽  
Wojciech Poncyljusz
Keyword(s):  
Magnetic Resonance Imaging ◽  
Risk Factors ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Vessel Wall ◽  
Intracranial Aneurysms ◽  
Aneurysm Rupture ◽  
Resonance Imaging ◽  
Aneurysm Wall ◽  
Conventional Risk Factors

Background: We decided to investigate whether aneurysm wall enhancement (AWE) on high-resolution vessel wall magnetic resonance imaging (HR VW-MRI) coexists with the conventional risk factors for aneurysm rupture. Methods: We performed HR VW-MRI in 46 patients with 64 unruptured small intracranial aneurysms. Patient demographics and clinical characteristics were recorded. The PHASES score was calculated for each aneurysm. Results: Of the 64 aneurysms, 15 (23.4%) showed wall enhancement on post-contrast HR VW-MRI. Aneurysms with wall enhancement had significantly larger size (p = 0.001), higher dome-to-neck ratio (p = 0.024), and a more irregular shape (p = 0.003) than aneurysms without wall enhancement. The proportion of aneurysms with wall enhancement was significantly higher in older patients (p = 0.011), and those with a history of prior aneurysmal SAH. The mean PHASES score was significantly higher in aneurysms with wall enhancement (p < 0.000). The multivariate logistic regression analysis revealed that aneurysm irregularity and the PHASES score are independently associated with the presence of AWE. Conclusions: Aneurysm wall enhancement on HR VW-MRI coexists with the conventional risk factors for aneurysm rupture.

scholarly journals Presence of Vessel Wall Hyperintensity in Unruptured Arteriovenous Malformations on Vessel Wall Magnetic Resonance Imaging: Pilot Study of AVM Vessel Wall “Enhancement”

2021 ◽  
Vol 15 ◽  
Author(s):  
Laura B. Eisenmenger ◽  
Jacqueline C. Junn ◽  
Daniel Cooke ◽  
Steven Hetts ◽  
Chengcheng Zhu ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Pilot Study ◽  
High Risk ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Arteriovenous Malformation ◽  
Arteriovenous Malformations ◽  
Vessel Wall ◽  
Susceptibility Weighted Imaging ◽  
Resonance Imaging

Purpose: High-resolution vessel wall magnetic resonance imaging (VW-MRI) could provide a way to identify high risk arteriovenous malformation (AVM) features. We present the first pilot study of clinically unruptured AVMs evaluated by high-resolution VW-MRI.Methods: A retrospective review of clinically unruptured AVMs with VW-MRI between January 1, 2016 and December 31, 2018 was performed documenting the presence or absence of vessel wall “hyperintensity,” or enhancement, within the nidus as well as perivascular enhancement and evidence of old hemorrhage (EOOH). The extent of nidal vessel wall “hyperintensity” was approximated into five groups: 0, 1–25, 26–50, 51–75, and 76–100%.Results: Of the nine cases, eight demonstrated at least some degree of vessel wall nidus “hyperintensity.” Of those eight cases, four demonstrated greater than 50% of the nidus with hyperintensity at the vessel wall, and three cases had perivascular enhancement adjacent to nidal vessels. Although none of the subjects had prior clinical hemorrhage/AVM rupture, of the six patients with available susceptibility weighted imaging to assess for remote hemorrhage, only two had subtle siderosis to suggest prior sub-clinical bleeds.Conclusion: Vessel wall “enhancement” occurs in AVMs with no prior clinical rupture. Additional studies are needed to further investigate the implication of these findings.

High resolution vessel wall magnetic resonance imaging in HIV associated vasculopathy

2017 ◽  
Vol 381 ◽  
pp. 421-422
Author(s):  
G. Taricani Kubota ◽  
R. de Faria Ferreira ◽  
T. Rocha Figueiredo ◽  
G. Titoneli dos Santos ◽  
L. Martins Tavares Scianni Morais ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Vessel Wall ◽  
Resonance Imaging

Abstract TP400: The Differences of Vessel Wall Features Between the Anterior and Posterior Brain Arteries Detected by High Resolution Magnetic Resonance Imaging in Patients With Acute Ischemic Stroke

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Xiangyan Chen ◽  
Lu Zheng ◽  
Jia LI ◽  
Wenjie Yang
Keyword(s):  
Magnetic Resonance Imaging ◽  
Ischemic Stroke ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Acute Ischemic Stroke ◽  
Vessel Wall ◽  
Posterior Circulation ◽  
Intraplaque Hemorrhage ◽  
Resonance Imaging ◽  
Anterior Circulation

Backgrounds: The purpose of this study was to investigate vessel wall features visualization by high resolution magnetic resonance imaging (HRMRI) in a series of ischemic stroke patients and to identify differences between lesions in the anterior and posterior circulation. Methods: We consecutively recruited Chinese patients with acute ischemic stroke or transient ischemic attack from 2016 to 2018. All patients were scanned at 3T magnetic resonance imaging. We evaluated pre-and post-contrast cross-sectional views of M1 and M2 segments of middle cerebral arteries (MCAs), basilar arteries (BA) and V4 segments of vertebral arteries (VAs). Results: A total of 74 patients (males 52.3%; median age 62 years old) were included in this study, among which, 234 lesions were identified on HRMRI, including 117 MCA lesions, 26 BA lesions, and 91 VA lesions. The sensitivity and specificity of MRA for diagnosing stenosis in anterior circulation were 89.3% (95% CI, 81.8%- 94.2%) and 50.0 (95% CI, 9.2%- 90.8%). The sensitivity and specificity of MRA for diagnosing stenosis in posterior circulation were 73.2% (95% CI, 63.9%- 80.9%) and 40.0 (95% CI, 7.3%- 83.0%). VA had a significantly higher contrast enhancement index (43.71± 7.74, p <0.016) than MCA (23.32± 2.46) or BA (22.69± 5.31) . Anterior circulation plaques had higher degree of stenosis (anterior versus posterior: 68.5% vs. 62.9%, p =0.036), more eccentric distribution (anterior versus posterior: 70.1% versus 53.8%, p =0.015) and higher rate of intraplaque hemorrhage (anterior versus posterior: 17.1% versus 7.7%, p =0.046). The plaques in posterior circulation had a thicker lesion wall (posterior versus anterior 16.58± 8.25 mm 2 vs. 9.10± 4.07 mm 2 , p <0.001) and higher enhancement index (posterior versus anterior 39.04± 8.50 vs. 23.32± 2.46, p <0.001) than the plaques in anterior circulation. Conclusions: The lesions in posterior circulations could be obscure on MRA. The area stenosis, intraplaque hemorrhage and enhancement index differed between circulations.

scholarly journals Association between basilar artery configuration and Vessel Wall features: a prospective high-resolution magnetic resonance imaging study

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Ziqi Xu ◽  
Mingyao Li ◽  
Zhikai Hou ◽  
Jinhao Lyu ◽  
Na Zhang ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Blood Vessel ◽  
Basilar Artery ◽  
Vessel Wall ◽  
Intraplaque Hemorrhage ◽  
Blood Vessel Wall ◽  
Resonance Imaging ◽  
The Relationship

Abstract Background The relationship between intracranial vessel configuration and wall features remains poorly investigated. Therefore, we aimed to investigate the relationship between the distal and proximal anatomical configuration of basilar artery (BA) and BA vessel wall features on high-resolution magnetic resonance imaging (HRMRI). Methods From September 2014 to January 2017, patients with suspected symptomatic intracranial arterial stenosis underwent HRMRI. Patients with severe BA stenosis were selected for this prospective study and divided into two groups corresponding to complete and incomplete BA configuration based on characteristics of the bilateral vertebral arteries and posterior cerebral arteries. Culprit blood vessel wall features on HRMRI included plaque enhancement, intraplaque hemorrhage, remodeling patterns, and plaque distribution. Culprit vessel wall features were compared between patients in the complete and incomplete BA configuration groups. Results Among the 298 consecutively enrolled patients, 34 had severe BA stenosis. Twenty patients had complete anatomical BA configuration and another 14 of them displayed incomplete configuration. There were no significant differences in vessel wall features between the complete and incomplete configuration patient groups. However, the proximal configuration of BA was associated with intraplaque hemorrhage (p = 0.002) while the distal configuration of BA correlated with strong enhancement of BA plaque (p = 0.041). Conclusions No association was found between the complete and incomplete BA configuration groups and blood vessel wall features. The proximal configuration of BA was related with intraplaque hemorrhage and the distal configuration of BA was associated with strong plaque enhancement. Further studies are warranted to confirm these findings. Trial registration URL: Unique identifier: NCT02705599 (March 10, 2016).

scholarly journals E-073 High Resolution Magnetic Resonance Imaging of Intracranial Aneurysms Treated by Flow Diversion

2016 ◽  
Vol 8 (Suppl 1) ◽  
pp. A80.2-A81
Author(s):  
J Guan ◽  
S McNally ◽  
A de Havenon ◽  
P Tuassky ◽  
S Kim ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Intracranial Aneurysms ◽  
Flow Diversion ◽  
Resonance Imaging

High-Resolution Vessel Wall Magnetic Resonance Imaging in Varicella-Zoster Virus Vasculitis

2016 ◽  
Vol 25 (6) ◽  
pp. e74-e76 ◽  
Author(s):  
Georgios Tsivgoulis ◽  
Stefanos Lachanis ◽  
Georgios Magoufis ◽  
Apostolos Safouris ◽  
Odysseas Kargiotis ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Varicella Zoster Virus ◽  
Vessel Wall ◽  
Resonance Imaging ◽  
Varicella Zoster
Sign in / Sign up

Export Citation Format

Share Document