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Peng Gao, Yabing Wang, Yan Ma, Qi Yang, Haiqing Song, Yanfei Chen, Liqun Jiao, Adnan I Qureshi
OBJECTIVE: The optimal treatment of chronic symptomatic total occlusion of the intracranial vertebral artery (ICVA) remains undefined. We report a single-center experience of endovascular recanalization for patients with chronic symptomatic ICVA occlusion who were refractory to medical therapy. METHODS: From Jan 2009 to Jan 2017, we retrospectively reviewed 14 consecutive patients presenting with recurrent symptoms attributed to the chronic ICVA occlusion. We searched previous literature using PubMed databases during the same period as comparison...
February 1, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Jin Wook Choi, Miran Han, Ji Man Hong, Jin Soo Lee, Sun Yong Kim, Sam Soo Kim
BACKGROUND AND PURPOSE: This study was to evaluate the diagnostic value of improved motion-sensitized driven-equilibrium (iMSDE)-prepared 3D T1-weighted magnetic resonance imaging (MRI) (iMSDE-3DMRI) in intracranial vertebrobasilary dissection (VBD) and to compare iMSDE-3DMRI images with those obtained using 2D high-resolution (HR) MRI with respect to their diagnostic performance in VBD. MATERIALS AND METHODS: We retrospectively reviewed 105 lesions from 102 patients who underwent multimodal imaging and contrast-enhanced iMSDE-3DMRI (CE-iMSDE-3DMRI)...
December 19, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
Jin-Er Shu, Ming-Liang Ying, Xiao-Rong Chen, Jian-Jun Hua, Jie-Ting Fu, Xiu-Mei Xia, Yong-Hao Pan, Yang Jiang
BACKGROUND: Ischemic stroke (IS) is a devastating occurrence affecting millions worldwide. This study aimed to evaluate the prognostic value of high-resolution magnetic resonance imaging (HRMRI) in assessing carotid atherosclerotic plaque in IS patients. METHODS: Between January 2013 and March 2015, 338 IS patients were recruited for the investigative purposes of the study. All participants of the study underwent an HRMRI inspection procedure after being admitted into the hospital...
November 2017: Medicine (Baltimore)
Wanqian Wang, Qi Yang, Debiao Li, Zhaoyang Fan, Xiaoming Bi, Xiangying Du, Fang Wu, Ye Wu, Kuncheng Li
AIM: To investigate the clinical relevance of plaque's morphological characteristics and distribution pattern using 3.0 T high-resolution magnetic resonance imaging (HRMRI) in patients with moderate or severe basilar artery (BA) atherosclerosis stenosis. MATERIALS AND METHODS: Fifty-seven patients (33 symptomatic patients and 24 asymptomatic patients) were recruited for 3.0 T HRMRI scan; all of them had >50% stenosis on the BA. The intraplaque hemorrhage (IPH), contrast-enhancement pattern, and distribution of BA plaques were compared between the symptomatic and asymptomatic groups...
2017: BioMed Research International
Guang-Xian Wang, Li Wen, Sheng Lei, Qian Ran, Jin-Bo Yin, Zi-Li Gong, Dong Zhang
OBJECTIVES: To evaluate the risk factors for rupture of intracranial aneurysms (IAs) using high resolution MRI (HRMRI). METHODS: 91 consecutive patients with 106 IAs were reviewed from February 2016 to April 2017. Patients and IAs were divided into ruptured and unruptured groups. In addition to the clinical characteristics of the patients, the features of IAs (eg, shape) were evaluated by CT angiography, whereas wall thickness, enhanced patterns, and enhancement ratio (ER) were evaluated by MRI...
September 16, 2017: Journal of Neurointerventional Surgery
Wen-Jie Yang, Ka-Sing Wong, Xiang-Yan Chen
Intracranial atherosclerosis is one of the leading causes of ischemic stroke and occurs more commonly in patients of Asian, African or Hispanic origin than in Caucasians. Although the histopathology of intracranial atherosclerotic disease resembles extracranial atherosclerosis, there are some notable differences in the onset and severity of atherosclerosis. Current understanding of intracranial atherosclerotic disease has been advanced by the high-resolution magnetic resonance imaging (HRMRI), a novel emerging imaging technique that can directly visualize the vessel wall pathology...
September 2017: Journal of Stroke
Yu-Yuan Xu, Ming-Li Li, Shan Gao, Zheng-Yu Jin, Zhao-Yong Sun, Jie Chen, Bo Hou, Hai-Long Zhou, Feng Feng, Wei-Hai Xu
BACKGROUND: Using high-resolution magnetic resonance imaging (HRMRI), we sought to investigate the underlying etiology of intracranial stenosis in young patients. METHODS: We retrospectively studied 122 Chinese young adult patients (from 18 to 45 years old, mean age 36.2±7.5 years) with unilateral middle cerebral artery (MCA) stenosis based on a prospectively established HRMRI database. The eccentricity, degree of stenosis, and remodeling types of MCA lesions were analyzed...
August 2017: Annals of Translational Medicine
Yisen Zhang, Binbin Sui, Jian Liu, Yang Wang, Zhongbin Tian, Junfan Chen, Zhongxue Wu, Xinjian Yang
OBJECTIVE The recurrence rate of vertebrobasilar dissecting aneurysms (VBDAs) after reconstructive endovascular treatment (EVT) is relatively high. The aneurysm wall enhancement on high-resolution MRI (HRMRI) reportedly predicts an unsteady state of an intracranial aneurysm. The authors used HRMRI to investigate the relationship between wall enhancement on HRMRI and progression of VBDAs after reconstructive EVT. METHODS From January 2012 to December 2015, patients with an unruptured VBDA who underwent reconstructive EVT were enrolled in this study...
April 7, 2017: Journal of Neurosurgery
Xiang-Yan Chen, Mark Fisher
Within the intracranial vasculature, atherosclerosis occurs in two distinctive patterns: (1) in Western populations who have severe extracranial and systemic atherosclerosis, the severity of intracranial involvement is consistently less than that within extracranial arteries; and (2) in Asians, Africans, and Hispanics, who often have isolated intracranial arterial disease that is found to be more often accompanied by brain infarction than comparable extracranial atherosclerotic disease. Compared to coronary and extracranial carotid atherosclerosis, intracranial atherosclerosis has distinct pathological characteristics compared to that of extracranial arteries...
2016: Frontiers of Neurology and Neuroscience
Juan F Arenillas, Elena López-Cancio, Ka Sing Wong
Increasing our knowledge about intracranial atherosclerosis (ICAS) natural history and prognostic factors is essential to improve its preventive therapy and thus reduce the dramatic clinical consequences caused by this entity. ICAS is characterized by a chronic and progressive course until it becomes symptomatic, mostly through complication of an unstable intracranial atherosclerotic plaque. Population-based studies in healthy subjects have shown that the prevalence of asymptomatic ICAS is higher in Asian than in Caucasian populations...
2016: Frontiers of Neurology and Neuroscience
Peng Hu, Qi Yang, Dan-Dan Wang, Shao-Chen Guan, Hong-Qi Zhang
INTRODUCTION: The aneurysm wall has been reported to play a critical role in the formation, development, and even rupture of an aneurysm. We used high-resolution magnetic resonance imaging (HRMRI) to investigate the aneurysm wall in an effort to identify evidence of inflammation invasion and define its relationship with aneurysm behavior. METHODS: Patients with intracranial aneurysms who were prospectively evaluated using HRMRI between July 2013 and June 2014 were enrolled in this study...
October 2016: Neuroradiology
Yu-Yuan Xu, Ming-Li Li, Shan Gao, Bo Hou, Zhao-Yong Sun, Hai-Long Zhou, Feng Feng, Wei-Hai Xu
OBJECTIVE: In this study, we sought to examine the prevalence and clinical relevance of deep tiny flow voids (DTFV) in patients with steno-occlusive middle cerebral artery (MCA) disease on high-resolution MRI (HRMRI). METHODS: We retrospectively reviewed the HRMRI and clinical data of 477 patients with MCA steno-occlusive disease. The presence and distribution of DTFV, defined as 3 or more flow voids along the affected MCA on at least 2 consecutive T2-weighted image slices on HRMRI, were observed...
May 24, 2016: Neurology
Tanya N Turan, Todd LeMatty, Renee Martin, Marc I Chimowitz, Zoran Rumboldt, M Vittoria Spampinato, Seth Stalcup, Robert J Adams, Truman Brown
BACKGROUND: Intracranial atherosclerosis is a leading cause of stroke, but little is known about the composition of the intracranial atherosclerotic lesion and how intracranial plaque morphology is related to the risk of stroke. High-resolution magnetic resonance imaging (HR MRI) has been used in patients with extracranial carotid atherosclerosis as an in vivo tool to identify, with high-interrater agreement, histologically defined plaque components (i.e., intraplaque hemorrhage, fibrous cap, and lipid core), which have been shown to be predictors of recurrent stroke...
December 2015: Brain and Behavior
Jeong-Min Kim, Keun-Hwa Jung, Chul-Ho Sohn, Jangsup Moon, Jung-Hwan Shin, Jaeseok Park, Seung-Hoon Lee, Moon Hee Han, Jae-Kyu Roh
BACKGROUND: Intracranial atherosclerosis is associated with frequent stroke recurrence. High resolution vessel wall magnetic resonance imaging (HRMRI) can provide atheroma information related to its vulnerability. AIMS: We performed HRMRI in stroke patients with intracranial atherosclerosis to determine whether plaque characteristics from vessel wall imaging can predict future stroke recurrence. METHODS: Between July 2011 and June 2013, acute stroke patients with symptomatic intracranial atherosclerosis were prospectively enrolled and 3-tesla HRMRI was performed on the relevant artery...
February 2016: International Journal of Stroke: Official Journal of the International Stroke Society
Luca Petrone, Stefania Nannoni, Alessandra Del Bene, Vanessa Palumbo, Domenico Inzitari
BACKGROUND: In 1989, Louis Caplan first used the term branch atheromatous disease (BAD) to describe an occlusion or stenosis at the origin of a deep penetrating artery of the brain, associated with a microatheroma or a junctional plaque, and leading to an internal capsule or pontine small infarct. BAD remained an understudied concept for decades. In recent years, the increasing diffusion of high-resolution magnetic resonance imaging (HRMRI) techniques brought new attention to the BAD debate...
2016: Cerebrovascular Diseases
Zhongzhao Teng, Wenjia Peng, Qian Zhan, Xuefeng Zhang, Qi Liu, Shiyue Chen, Xia Tian, Luguang Chen, Adam J Brown, Martin J Graves, Jonathan H Gillard, Jianping Lu
OBJECTIVE: Although certain morphological features depicted by high resolution, multi-contrast magnetic resonance imaging (hrMRI) have been shown to be different between culprit and non-culprit middle cerebral artery (MCA) atherosclerotic lesions, the incremental value of hrMRI to define culprit lesions over stenosis has not been assessed. METHODS: Patients suspected with MCA stenosis underwent hrMRI. Lumen and outer wall were segmented to calculate stenosis, plaque burden (PB), volume (PV), length (PL) and minimum luminal area (MLA)...
July 2016: European Radiology
Dong Hyun Chun, Sung Tae Kim, Young Gyun Jeong, Hae Woong Jeong
The equipment and techniques associated with magnetic resonance imaging (MRI) have rapidly evolved. The development of 3.0 Tesla MRI has enabled high-resolution imaging of the intracranial vessel wall. High-resolution MRI (HRMRI) can yield excellent visualization of both the arterial wall and lumen, thus facilitating the detection of the primary and secondary features of intracranial arterial dissection. In the present report, we describe the manner in which HRMRI affected our endovascular treatment planning strategy in 2 cases with unruptured intracranial vertebral artery dissection aneurysm...
August 2015: Journal of Korean Neurosurgical Society
Jin Hee Yu, Hyo Sung Kwak, Gyung Ho Chung, Seung Bae Hwang, Mi Sung Park, Seong Hoon Park
BACKGROUND AND PURPOSE: High-resolution magnetic resonance imaging (HRMRI) is ideal for serial examination of diseased arterial walls because it is noninvasive and has superior capability of discriminating tissue characteristics. The aim of this study is to evaluate the prevalence and clinical relevance of intraplaque hemorrhage (IPH) in patients with basilar artery (BA) atherosclerosis using HRMRI. METHODS: We analyzed HRMRI and clinical data from 74 patients (45 symptomatic and 29 asymptomatic), all of whom had >50% BA stenosis...
October 2015: Stroke; a Journal of Cerebral Circulation
Haiqing Yang, Yifei Zhu, Zuojun Geng, Caiying Li, Lixia Zhou, Q I Liu
The present study evaluated the value of black-blood high-resolution magnetic resonance imaging (HRMRI) for the visualization of intracranial atherosclerosis (ICAS) plaques. A total of 110 patients with cerebral artery or vertebrobasilar stenosis, vessel occlusion or a significantly weakened signal in black-blood magnetic resonance angiography (MRA; three-dimensional time-of-flight) were examined. Black-blood MRA was used to observe whether plaques were present in the abnormal vascular walls. Among the 110 patients with cerebral infarction, 16 cases presented with no significant abnormality of the lumen and walls, while plaques were observed in 94 cases...
July 2015: Experimental and Therapeutic Medicine
Sung-Hwan Lim, Hojin Choi, Hee-Tae Kim, Juhan Kim, Sung Hyuk Heo, Dae-il Chang, Ji Young Lee, Young-Jun Lee, Ji Young Kim, Hyun Young Kim, Young Seo Kim
BACKGROUND: The association between progressive motor deficits (PMD) in acute pontine infarction and basilar stenosis is unclear. High resolution MRI (HRMRI) is an emerging tool for basilar artery evaluation and might provide more accurate information. We aimed to analyze the association between basilar plaque assessed by HRMRI and PMD after acute pontine infarction. METHODS: We identified consecutive patients with unilateral pontine infarction within 24 h of stroke onset...
May 2015: Atherosclerosis
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