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Elevated Pulse Pressure Is a Risk Factor for Cerebral Microbleeds. A Single Center Case-Control Study
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作者 Christopher Ntege Haibo Xu 《International Journal of Clinical Medicine》 CAS 2023年第2期116-128,共13页
Recent developments in brain magnetic resonance imaging using advanced Susceptibility Weighted Imaging (SWI) have significantly increased the detection and prevalence of Cerebral Microbleeds (CMBs). Here, we aimed to ... Recent developments in brain magnetic resonance imaging using advanced Susceptibility Weighted Imaging (SWI) have significantly increased the detection and prevalence of Cerebral Microbleeds (CMBs). Here, we aimed to explore the association between Pulse Pressure (PP) and CMBs. Having been implicated in various arteriopathies, we hypothesized that elevated PP could also be a risk for CMBs. A retrospective case-control study was conducted from August 2021 to September 2022 at Zhongnan Hospital of Wuhan University China. Extracted data were analyzed in SPSS. Chi-square test, binary logistic regression, and Spearman’s correlation analysis were conducted.104 patients were analyzed. Univariate analysis showed no significant association between PP and CMBs, OR 1.65 (95% CI: 0.737 - 3.694;p > 0.05), while DBP and alcohol consumption were significant, ORs 2.956 (95% CI: 1.249 - 6.997, p < 0.05) and 2.525 (95% CI: 1.062 - 6.002, p < 0.05) respectively. Multivariate analysis, showed that PP was significantly associated with CMBs, OR 3.194 (95% CI: 1.024 - 9.964, p < 0.05) in combination with SBP, DBP, gender, age, smoking and alcohol consumption. Taken together, the study showed that elevated PP is associated with CMB, but is not an independent risk factor for CMBs. 展开更多
关键词 CEREBRAL microbleeds Pulse Pressure Susceptibility Weighted Imaging MRI CMBS
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High Blood Pressure Increases the Risk of Cerebral Microbleeds in Hypertensive Individuals
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作者 Yahya Abdullahi Ali Erick Thokerunga +1 位作者 Zakaria Ahmed Mohamed Xi Wang 《International Journal of Clinical Medicine》 CAS 2023年第4期185-196,共12页
Introduction: Hypertension is the leading preventable risk factor for major cardiovascular diseases worldwide. Recently, compelling evidence has emerged associating hypertension with cerebral microbleeds (CMBs), which... Introduction: Hypertension is the leading preventable risk factor for major cardiovascular diseases worldwide. Recently, compelling evidence has emerged associating hypertension with cerebral microbleeds (CMBs), which are subclinical hemorrhages in the brain resulting from structural abnormalities in the small vessels that supply the brain. In addition to overall elevated blood pressure (BP), elevation in individual parameters such as systolic BP, diastolic BP, pulse pressure and mean arterial pressure could also individually be important risk factors for CMBs. This study aimed to assess the association between CMBs and blood pressure, and assess blood pressure parameters that could be possible risk factors for CMB. Methods: A retrospective case-control study was conducted from August 2021 to September 2022 on patients who underwent MRI due to primary complaints of limb disorders, loss of consciousness, persistent dizziness, and intermittent headaches. The patients were divided according to MRI results into 52 cases (those who had CMBs) and 52 controls (those who had no CMBs). Extracted data were analyzed in SPSS. Chi-square test, binary logistic regression, and Spearman’s correlation analysis were conducted. Results: In total, 104 cases and control patients were assessed, with mean (±SD) age 70.6 ± 8.56 vs 68.9 ± 8.93 years respectively (p > 0.05). CMB patients had more cases of stroke, hyperlipidemia and diabetes than non-CMB patients. Systolic blood pressure (SBP), diastolic blood pressure, pulse pressure (PP) and mean arterial pressure (MAP) were all considerably raised in CMB patients than non-CMBs patients. Blood pressure grades were positively correlated with the severity of CMBs (r = 0.22;p = 0.044). Logistic regression analysis showed that SBP and MAP were independent risk factors for CMBs (age and sex adjusted odds ratio = 1.420;95% CI: 1.030 - 1.851, and 1.310;95% CI: 1.011 - 1.631 respectively). Conclusions: In summary, this study found that hypertension was positively correlated with CMBs severity, and that SBP and MAP are independent risk factors for CMBs in patients with hypertension. 展开更多
关键词 HYPERTENSION Pressure RISK CEREBRAL microbleeds
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Cerebral Microbleeds Identified by Susceptibility-Weighted Imaging in Two Cases of Fabry Disease without Neurological Symptoms 被引量:1
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作者 Mineka Yamazoe Masayuki Maeda +2 位作者 Maki Umino Hidekazu Tomimoto Hajime Sakuma 《Open Journal of Medical Imaging》 2015年第4期194-198,共5页
Cerebrovascular disease is one of the fatal causes of Fabry disease (FD). Brain magnetic resonance imaging findings typically show lacunar infarcts in young patients with FD, but brain hemorrhages in FD are rarely rep... Cerebrovascular disease is one of the fatal causes of Fabry disease (FD). Brain magnetic resonance imaging findings typically show lacunar infarcts in young patients with FD, but brain hemorrhages in FD are rarely reported. We report two cases of FD focusing on cerebral microbleeds (CMBs). Susceptibility-weighted imaging (SWI) and T2*-weighted imaging reveal several lobar and deep CMBs in two patients with no medical history of stroke symptoms, hypertension, and anticoagulant/antiplatelet treatment. SWI can detect a greater number of CMBs than T2*-weighted imaging. Thus, SWI is an excellent tool for identifying underlying CMBs in FD. 展开更多
关键词 FABRY Disease Magnetic RESONANCE IMAGING Susceptibility-Weighted IMAGING CEREBRAL microbleeds
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A Transfer Learning-Based Approach to Detect Cerebral Microbleeds
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作者 Sitara Afzal Imran Ullah Khan Jong Weon Lee 《Computers, Materials & Continua》 SCIE EI 2022年第4期1903-1923,共21页
Cerebral microbleeds are small chronic vascular diseases that occur because of irregularities in the cerebrum vessels.Individuals and elderly people with brain injury and dementia can have small microbleeds in their b... Cerebral microbleeds are small chronic vascular diseases that occur because of irregularities in the cerebrum vessels.Individuals and elderly people with brain injury and dementia can have small microbleeds in their brains.A recent study has shown that cerebral microbleeds could be remarkably risky in terms of life and can be riskier for patients with dementia.In this study,we proposed an efficient approach to automatically identify microbleeds by reducing the false positives in openly available susceptibility-weighted imaging(SWI)data samples.The proposed structure comprises two different pretrained convolutional models with four stages.These stages include(i)skull removal and augmentation,(ii)making clusters of data samples using the k-mean classifier,(iii)reduction of false positives for efficient performance,and(iv)transfer-learning classification.The proposed technique was assessed using the SWI dataset available for 20 subjects.For our findings,we attained an accuracy of 97.26%with a 1.8%false-positive rate using data augmentation on the AlexNet transfer learning model and a 1.1%false-positive rate with 97.89%accuracy for the ResNet 50 model with data augmentation approaches.The results show that our models outperformed the existing approach for the detection of microbleeds. 展开更多
关键词 microbleeds deep convolutional neural network ResNet50 AlexNet computer-vision
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An Efficient False-Positive Reduction System for Cerebral Microbleeds Detection
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作者 Sitara Afzal Muazzam Maqsood +2 位作者 Irfan Mehmood Muhammad Tabish Niaz Sanghyun Seo 《Computers, Materials & Continua》 SCIE EI 2021年第3期2301-2315,共15页
Cerebral Microbleeds(CMBs)are microhemorrhages caused by certain abnormalities of brain vessels.CMBs can be found in people with Traumatic Brain Injury(TBI),Alzheimer’s disease,and in old individuals having a brain i... Cerebral Microbleeds(CMBs)are microhemorrhages caused by certain abnormalities of brain vessels.CMBs can be found in people with Traumatic Brain Injury(TBI),Alzheimer’s disease,and in old individuals having a brain injury.Current research reveals that CMBs can be highly dangerous for individuals having dementia and stroke.The CMBs seriously impact individuals’life which makes it crucial to recognize the CMBs in its initial phase to stop deterioration and to assist individuals to have a normal life.The existing work report good results but often ignores false-positive’s perspective for this research area.In this paper,an efficient approach is presented to detect CMBs from the Susceptibility Weighted Images(SWI).The proposed framework consists of four main phases(i)making clusters of brain Magnetic Resonance Imaging(MRI)using k-mean classifier(ii)reduce false positives for better classification results(iii)discriminative feature extraction specific to CMBs(iv)classification using a five layers convolutional neural network(CNN).The proposed method is evaluated on a public dataset available for 20 subjects.The proposed system shows an accuracy of 98.9%and a 1.1%false-positive rate value.The results show the superiority of the proposed work as compared to existing states of the art methods. 展开更多
关键词 microbleeds detection FALSE-POSITIVE deep learning CNN
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Ischaemic Stroke Complicating Infective Endocarditis: Microbleeds Are the Diagnostic Clue
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作者 Wadi Bnouhanna Taho Oulounao Adlaide +3 位作者 Chaima EL Jemili Mounia Rahamani Maria Benabdeljlil Saadia Aidi 《Case Reports in Clinical Medicine》 2022年第1期13-18,共6页
<strong>Introduction:</strong> Ischemic strokes represent a classic complication of infective endocarditis (IE) and are most often related to the fragmentation of valvular vegetation. In most cases, they o... <strong>Introduction:</strong> Ischemic strokes represent a classic complication of infective endocarditis (IE) and are most often related to the fragmentation of valvular vegetation. In most cases, they occur in the Sylvian territory and are related to<em> Staphylococcus aureus</em>. MRI can demonstrate, in addition to the AVCI image, cerebral microbleeds (CMBs) that are very suggestive of the diagnosis. We present the case of a patient who presented an ischemic stroke occurring in the context of infective endocarditis.<strong> Observation:</strong> A 32-year-old woman with no previous medical history initially presented with acute febrile headache, two weeks later she developed right hemiplegia with aphasia in the context of fever. Her general examination revealed lesions on the soles of her feet, in the form of nodules, infected in places, suggestive of Janeway nodules (characteristic of IE). The brain MRI showed an ischemic stroke in the Sylvian territory, with the presence of multiple microbleeds on the magnetic susceptibility sequences. The biological examination showed a severe inflammatory syndrome;the transthoracic echocardiography (TTE) confirmed the presence of vegetation on the aortic valve;and the blood cultures showed a <em>Staphylococcus aureus</em>. Antibiotic therapy was started, and the patient was transferred to the cardiology department. <strong>Discussion: </strong>Our observation has a double interest. The first is clinical due to the presence of plantar nodules (Janeway’s nodules) that are characteristic of IE which should orientate the diagnosis before the installation of the stroke, and the second is radiological and linked to the discovery of microbleeds. Their presence is increasingly reported in the literature, but their pathophysiology is not yet very clear. <strong>Conclusion:</strong> Stroke is the most frequent extracardiac complication during IE. The presence of microbleeds contributes to early diagnosis, especially in asymptomatic forms. 展开更多
关键词 Ischaemic Stroke Infective Endocarditis Brain MRI microbleeds
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Diffuse axonal injury after traumatic cerebral microbleeds: an evaluation of imaging techniques 被引量:21
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作者 Jun Liu Zhifeng Kou Yongquan Tian 《Neural Regeneration Research》 SCIE CAS CSCD 2014年第12期1222-1230,共9页
Previous neuropathological studies regarding traumatic brain injury have primarily focused on changes in large structures, for example, the clinical prognosis after cerebral contusion, intracerebral hematoma, and epid... Previous neuropathological studies regarding traumatic brain injury have primarily focused on changes in large structures, for example, the clinical prognosis after cerebral contusion, intracerebral hematoma, and epidural and subdural hematoma. In fact, many smaller injuries can also lead to severe neurological disorders. For example, cerebral microbleeds result in the dysfunction of adjacent neurons and the disassociation between cortex and subcortical structures. These tiny changes cannot be adequately visualized on CT or conventional MRI. In contrast, gradient echo sequence-based susceptibility-weighted imaging is very sensitive to blood metabolites and microbleeds, and can be used to evaluate traumatic cerebral microbleeds with high sensitivity and accuracy. Cerebral microbleed can be considered as an important imaging marker for diffuse axonal injury with potential relevance for prognosis. For this reason, based on experimental and clinical studies, this study reviews the role of imaging data showing traumatic cerebral microbleeds in the evaluation of cerebral neuronal injury and neurofunctional loss. 展开更多
关键词 创伤性脑损伤 弥漫性 出血 评估 影像学 外伤性 神经系统疾病 神经元损伤
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Microbleeds in fronto-subcortical circuits are predictive of dementia conversion in patients with vascular cognitive impairment but no dementia 被引量:12
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作者 Yang-Kun Chen Wei-Min Xiao +6 位作者 Wei Li Zhuo-Xin Ni Yong-Lin Liu Li Xu Jian-Feng Qu Chee H.Ng Yu-Tao Xiang 《Neural Regeneration Research》 SCIE CAS CSCD 2018年第11期1913-1918,共6页
Cerebral small vessel disease(CSVD) is a common etiology of vascular cognitive impairment with no dementia(V-CIND). Studies have revealed that cerebral microbleeds(CMBs), a feature of CSVD, contribute to cognitive imp... Cerebral small vessel disease(CSVD) is a common etiology of vascular cognitive impairment with no dementia(V-CIND). Studies have revealed that cerebral microbleeds(CMBs), a feature of CSVD, contribute to cognitive impairment. However, the association between CMBs and dementia conversion in individuals with V-CIND is still unclear. Here, we analyzed the predictive role of CMBs in the conversion from V-CIND to dementia in CSVD patients. We recruited and prospectively assessed 85 patients with CSVD and V-CIND. V-CIND was evaluated using a series of comprehensive neuropsychological scales, including the Chinese version of the Montreal Cognitive Assessment and the Clinical Dementia Rating. MRI assessments were used to quantify lacunar infarcts, white matter hyperintensities, CMBs, and medial temporal lobe atrophy. Eighty-two of the 85 patients completed the assessment for dementia conversion at a 1-year follow-up assessment. Multivariate logistic regression analyses were conducted to examine independent clinical and MRI variables associated with dementia conversion. Twenty-four patients(29.3%) had converted to dementia at the 1-year follow-up, and these individuals had significantly more CMBs in the fronto-subcortical circuits. Multivariate logistic regression analyses revealed that the patients with CMBs in the fronto-subcortical circuits(odds ratio = 4.4; 95% confidence interval: 1.602–12.081, P = 0.004) and 5 or more CMBs overall(odds ratio = 17.6, 95% confidence interval: 3.23–95.84, P = 0.001) had a significantly increased risk of dementia at the 1-year follow-up. These findings indicate that CMBs in the fronto-subcortical circuits may be predictive of dementia conversion in CSVD patients with V-CIND, and thus extend the clinical significance of CMBs. 展开更多
关键词 痴呆 电路 预兆 缺陷 脉管 CMB 回归分析 蒙特利尔
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MRI应用于阿尔茨海默病、血管性痴呆、混合型痴呆患者中血管损伤与脑萎缩评估的研究
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作者 陈昱 陈大才 +3 位作者 陈薪宇 毕娟娟 简薇 徐丽丝 《中国CT和MRI杂志》 2024年第2期18-21,共4页
目的对比血管损伤与脑萎缩在阿尔茨海默病(AD)、血管性痴呆(VD)或混合性痴呆(MD)患者中的分布,探究MRI在AD、VD、MD鉴别诊断中的价值。方法76例患者分别诊断为AD34例、VD31例和MD 22例。分别对三组通过分析MRI图像进行独立视觉评分量表... 目的对比血管损伤与脑萎缩在阿尔茨海默病(AD)、血管性痴呆(VD)或混合性痴呆(MD)患者中的分布,探究MRI在AD、VD、MD鉴别诊断中的价值。方法76例患者分别诊断为AD34例、VD31例和MD 22例。分别对三组通过分析MRI图像进行独立视觉评分量表和Evans's指数评估。结果与AD相比,MD的脑室周围白质病变PVL(P=0.002)、深部白质病变DWML(P=0.006)、皮质下微出血Juxtacortical MB(P=0.007)、深部白质微出血Deep MB(P=0.003)评分更高,VD的深部灰质病变DGML(p=0.016)、血管周围间隙PVS BG-CS(P=0.005)明显更多。VD与MD比较,血管性病变视觉评分结果无统计学差异,但VD患者内侧颞叶萎缩MTA(P<0.001)评分显著高于MD。脑皮层萎缩和Evans's指数的分布在组间无显著差异。结论MRI在痴呆患者的评估中可以更准确地检测血管病变及评估脑萎缩情况。研究证实血管病变在VD或MD患者中比AD更多,其中MD以深部和皮层旁微出血为主,这表明淀粉样脑血管病(CAA)可能是其主要的潜在病理机制。 展开更多
关键词 阿尔茨海默病 血管性痴呆 混合型痴呆 白质病变 微出血 视觉评分量表
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中国人群脑微出血患病率的Meta分析
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作者 先丽红 李娟 +3 位作者 薛超 赵雪姣 卢婷 颜欢 《中国全科医学》 CAS 北大核心 2024年第20期2527-2533,2544,共8页
背景 脑微出血(CMBs)是严重危害我国国民健康的重要疾病,其发病率与年龄呈正相关。同时,CMBs也是卒中复发及诱发出血性脑卒中的独立危险因素。了解CMBs的患病现状对于推动我国健康老龄化进程及加强脑卒中防治工作具有重大现实意义。目的... 背景 脑微出血(CMBs)是严重危害我国国民健康的重要疾病,其发病率与年龄呈正相关。同时,CMBs也是卒中复发及诱发出血性脑卒中的独立危险因素。了解CMBs的患病现状对于推动我国健康老龄化进程及加强脑卒中防治工作具有重大现实意义。目的 系统评价我国CMBs发生的现况,为推进我国健康老龄化进程及加强脑卒中防治工作提供数据支撑。方法 系统检索中国生物医学文献数据库(CBM)、中国知网(CNKI)、万方数据知识服务平台(Wanfang Data)、维普网(VIP)、PubMed、Embase、Web of Science等数据库中有关我国CMBs患病率的横断面研究,检索时限为建库至2023年11月。2名研究者分别对文献进行筛选、资料提取及纳入文献的偏倚风险评估,并采用Stata 16.0软件进行Meta分析。结果 共纳入39项研究,25 877例研究对象。Meta分析结果显示:我国CMBs的总体患病率为25.0%(95%CI=21.0%~29.0%)。亚组分析结果显示,51~60、61~70、71~80岁CMBs患病率分别为27.0%(95%CI=12.0%~44.0%)、23.0%(95%CI=16.0%~30.0%)、27.0%(95%CI=20.0%~35.0%);男、女性CMBs患病率分别为14.0%(95%CI=11.0%~18.0%)、10.0%(95%CI=8.0%~12.0%);华北、华东、华南、华中、西南、西北地区CMBs患病率分别为21.0%(95%CI=15.0%~28.0%)、26.0%(95%CI=21.0%~33.0%)、21.0%(95%CI=8.0%~39.0%)、21.0%(95%CI=16.0%~27.0%)、24.0%(95%CI=21.0%~27.0%)、46.0%(95%CI=41.0%~51.0%);有、无高血压病史CMBs患病率分别为19.0%(95%CI=13.0%~26.0%)、8.0%(95%CI=6.0%~11.0%);有、无吸烟史CMBs患病率分别为9.0%(95%CI=5.0%~14.0%)、16.0%(95%CI=12.0%~21.0%)。结论 我国CMBs总体患病率较高,不同年龄分段、地域及省份之间存在明显差异。高龄、男性、西北地区以及有高血压病史的人群发病率较高。受纳入研究数量和质量限制,该结论亟待更多高质量研究证实。 展开更多
关键词 脑微出血 患病率 中国 系统评价 META分析
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磁共振ESWAN序列对建立脑微出血病变等级制度的定量研究
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作者 宋诗倩 吕月琴 +5 位作者 张琼方 阮雯乐 张银萍 曾维 陈伟 张慧 《分子影像学杂志》 2024年第3期242-248,共7页
目的应用磁共振三维增强多梯度回波T2^(*)加权血管成像(ESWAN)序列的相位值(PV)完善脑微出血(CMBs)影像诊断的分级标准。方法回顾性分析2021年5月~2022年5月在中南大学湘雅医院行ESWAN序列扫描的100例患有CMBs的脑小血管病(CSVD)患者、2... 目的应用磁共振三维增强多梯度回波T2^(*)加权血管成像(ESWAN)序列的相位值(PV)完善脑微出血(CMBs)影像诊断的分级标准。方法回顾性分析2021年5月~2022年5月在中南大学湘雅医院行ESWAN序列扫描的100例患有CMBs的脑小血管病(CSVD)患者、29例脑内无异常影像表现且无其他基础疾病的健康志愿者。根据病变诊断结果将CSVD组分为CMBs组、腔隙性脑梗死(LI)组(CMBs单独合并LI)、脑白质病损(WML)组(CMBs单独合并WML)、LI+WML组。将局限于两个脑区内且LI的病灶数小于3个的定义为散发LI,否则为多发LI;FazekasⅠ级定义为轻度WML,否则为重度WML。采用医院后处理软件勾画并测量CSVD组各CMBs病灶以及健康组红核与黑质的PV值,分析CMBs病灶PV值与健康红核黑质的差异以及LI、WML病变发生状况与CMBs PV值的关系。结果CSVD组各脑区CMBs病灶与健康组红核、黑质的平均PV值差异均有统计学意义(F=65.599,P<0.001);不同WML病变程度、LI病灶个数时CMBs平均PV值间的差异均有统计学意义(P<0.05)且呈负相关关系(P=0.027、0.047)。根据影响程度初步将CMBsⅠ级定义为PV值>-0.74,CMBsⅡ级定义为PV值-0.81~-0.74,CMBsⅢ级定义为PV值-0.84~-0.81,CMBsⅣ级定义为PV值-0.89~-0.84,CMBsⅤ级定义为PV值<-0.89。结论CMBs病变与LI、WML病变程度相互影响;磁共振ESWAN序列的PV值能量化反映CMBs的病变程度,以此为依据建立CMBs的病变等级制度,有望取代目前相对主观的人工计数评估方式,辅助实现CMBs早期病灶的精准检出、CSVD疾病初期的快速诊断。 展开更多
关键词 脑微出血 三维增强多梯度回波T2^(*)加权血管成像 磁共振 定量诊断
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脑微出血对急性脑梗死患者血管再通治疗后的影响
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作者 付胜奇 李浩然 +4 位作者 朱利利 周晓影 石宝洋 胡胜洁 秦海强 《中风与神经疾病杂志》 CAS 2024年第2期129-134,共6页
目的研究脑微出血(CMB)对静脉溶栓(IVT)或机械取栓(MT)的急性脑梗死(ACI)患者预后的影响。方法连续纳入2015年1月—2022年6月在郑州人民医院住院的经IVT或MT治疗的ACI患者738例,评估患者入院时CMB情况及3个月改良Rankin量表(mRS)评分。... 目的研究脑微出血(CMB)对静脉溶栓(IVT)或机械取栓(MT)的急性脑梗死(ACI)患者预后的影响。方法连续纳入2015年1月—2022年6月在郑州人民医院住院的经IVT或MT治疗的ACI患者738例,评估患者入院时CMB情况及3个月改良Rankin量表(mRS)评分。分析CMB的存在、部位及负荷量对患者3个月mRS的影响。并对血管再通患者进行亚组分析。结果在所有患者中,是否存在CMB与3个月预后无显著相关性(38.0%vs 44.2%;P=0.295),在血管再通患者中,无CMB患者的预后良好比例显著高于有CMB患者(56.9%vs 35.8%,P=0.011);CMB与3个月时预后的多因素Logistic回归分析显示,在所有患者中,仅高负荷CMB与3个月时预后相关(OR=0.017,95%CI 0.112~0.808,P=0.017);血管再通患者中,存在CMB(OR=0.422,95%CI 0.214~0.832,P=0.013)、脑叶CMB(OR=0.379,95%CI 0.157~0.920,P=0.032)及高负荷CMBs(OR=0.207,95%CI 0.056~0.760,P=0.018)与3个月预后显著相关。结论CMB对血管再通患者的不良影响大于未再通患者。存在CMB、脑叶CMB及高负荷CMB是血管再通患者3个月不良预后的独立预测因素。 展开更多
关键词 脑微出血 急性脑梗死 血管再通 mRS评分
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MR颅脑磁敏感加权成像评估高血压分级与脑内微出血的相关性
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作者 吴荣兴 廖仁引 +3 位作者 周卫国 周之明 韦素冬 冯景强 《医学影像学杂志》 2024年第3期5-8,共4页
目的探讨MR颅脑磁敏感加权成像(SWI)评估高血压分级与脑内微出血的相关性。方法选取在我院接受临床诊断和治疗的高血压患者300例,根据血压水平分为1级高血压组、2级高血压组、3级高血压组。所有患者均行MR颅脑SWI检查,比较三组患者脑微... 目的探讨MR颅脑磁敏感加权成像(SWI)评估高血压分级与脑内微出血的相关性。方法选取在我院接受临床诊断和治疗的高血压患者300例,根据血压水平分为1级高血压组、2级高血压组、3级高血压组。所有患者均行MR颅脑SWI检查,比较三组患者脑微出血(CMBs)的检出数量,并分析CMBs检出数量与高血压分级的相关性。采用MedCalc软件计算SWI诊断不同高血压分级患者CMBs的敏感度、特异度、阳性预测值、阴性预测值。根据CMBs检查结果对CMBs进行分型,分析高血压分级和CMBs分型的相关性。结果3级高血压组患者CMBs阳性率和CMBs检出数量均高于1级高血压组和2级高血压组,差异有统计学意义(P<0.05)。高血压分级和CMBs检出数量呈正相关性(r>0,P<0.05)。SWI对不同高血压分级患者CMBs的诊断敏感度、特异度、阳性预测值、阴性预测值比较差异无统计学意义(P>0.05)。3级高血压组患者Ⅰ型CMBs、Ⅱ型CMBs、Ⅴ型CMBs的阳性率均高于1级高血压组和2级高血压组,差异有统计学意义(P<0.05)。Spearman相关检验显示,高血压分级和CMBs分型无明显相关性(P>0.05)。结论脑内微出血和高血压病情密切相关,MR颅脑SWI对评估不同高血压分级患者CMBs的分布情况具有重要的应用价值。 展开更多
关键词 磁敏感加权成像 高血压分级 脑微出血 相关性分析
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老年人群血清β_(2)微球蛋白水平与脑微出血的相关性分析
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作者 韦存胜 俞晓蓉 +2 位作者 陈媛 纪娟 陈雪梅 《中华老年心脑血管病杂志》 CAS 北大核心 2024年第1期55-58,共4页
目的探讨老年人群血清β_(2)微球蛋白水平与脑微出血(CMB)的相关性。方法回顾性分析2020年1月至2022年11月我院神经内科收治的慢性病老年患者636例,所有患者于入院第2天采集静脉血检测血清β_(2)微球蛋白水平,并行头颅磁共振磁敏感加权... 目的探讨老年人群血清β_(2)微球蛋白水平与脑微出血(CMB)的相关性。方法回顾性分析2020年1月至2022年11月我院神经内科收治的慢性病老年患者636例,所有患者于入院第2天采集静脉血检测血清β_(2)微球蛋白水平,并行头颅磁共振磁敏感加权成像扫描,根据患者磁敏感加权成像有无CMB分为CMB组82例和无CMB组554例。采用二元logistic回归分析CMB的独立危险因素。结果二元logistic回归结果显示,通过不同模型调整混杂因素后,血清β_(2)微球蛋白水平是老年患者CMB发生的独立危险因素(模型1:β=0.179,OR=1.196,95%CI:1.017~1.407,P=0.031;模型2:β=0.215,OR=1.240,95%CI:1.048~1.468,P=0.012)。ROC曲线结果显示,血清β_(2)微球蛋白水平诊断CMB的最佳截断值为1.805 mg/L,敏感性为70.7%,特异性为52.5%。曲线下面积为0.657(95%CI:0.595~0.719,P<0.01)。结论老年人群血清β_(2)微球蛋白增高与CMB密切相关,因此可将β_(2)微球蛋白作为老年人群CMB的预测手段之一。 展开更多
关键词 脑出血 β_(2)微球蛋白 磁共振成像 危险因素 预测 回顾性研究 脑微出血
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脑小血管病总负荷与急性缺血性脑卒中的相关研究进展
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作者 龚晓晓 孙萍 伍国锋 《临床误诊误治》 CAS 2024年第3期149-152,共4页
急性缺血性卒中是病死率、致残率较高的疾病之一,而静脉溶栓及血管内治疗是目前临床治疗该病的有效方法。脑小血管病的概念被提出后经过一系列研究发现,其与急性缺血性脑卒中治疗预后具有显著的相关性。特别是脑小血管病总负荷评分能够... 急性缺血性卒中是病死率、致残率较高的疾病之一,而静脉溶栓及血管内治疗是目前临床治疗该病的有效方法。脑小血管病的概念被提出后经过一系列研究发现,其与急性缺血性脑卒中治疗预后具有显著的相关性。特别是脑小血管病总负荷评分能够更好评估脑小血管病对大脑整体功能的影响情况,国内外已对其在急性缺血性脑卒中静脉溶栓及血管内治疗预后方面进行着各种层面的相关研究,旨在对急性缺血性卒中患者病情进展进行预判并提前干预,以降低患者致残率和病死率。本文着重对脑小血管病总负荷与急性缺血性脑卒中治疗预后的相关研究进行综述。 展开更多
关键词 脑小血管病 急性缺血性脑卒中 静脉溶栓 血管内治疗 脑白质高信号 血管周围间隙 脑微出血 脑萎缩
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Relationship of cerebral microbleeds to inflammatory marker levels 被引量:1
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作者 Qiao-Li Lu Chen Li +2 位作者 Ying Song Liang Wang Zhi-Rong Jia 《Neuroimmunology and Neuroinflammation》 2017年第8期145-151,共7页
Aim: The purpose of this study is to investigate the incidence, distribution and risk factors of cerebral microbleeds (CMBs) and the relation between CMBs and inflammation in ischemic cerebrovascular disease. Methods:... Aim: The purpose of this study is to investigate the incidence, distribution and risk factors of cerebral microbleeds (CMBs) and the relation between CMBs and inflammation in ischemic cerebrovascular disease. Methods: Two hundred and one patients without acute infarction or transient ischemic attack were enrolled. The presence and number of CMB were assessed on susceptibility-weighted imaging. The traditional risk factors of CMB were recorded. Levels of high-sensitivity C-reactive protein (hs-CRP), interleukin-6 (IL-6), and matrix metalloproteinase-9 (MMP-9) were tested. Logistic regression analyses were used for multiple-factor analysis of risk factors of CMB. Results: Of the 201 patients, 49 (24.38%) had CMB. Multivariate logistic regression analyses showed that the age, the prevalence of hypertension, silent lacunar infarction, white matter lesion, Montreal Cognitive Assessment Score, the using rate of antithrombotic drugs and levels of hs-CRP, IL-6, MMP-9 were the risk factors for CMB. After adjustments for traditional risk factors, inflammatory marker levels remained to be associated with CMBs. The adjusted odd ratios of hs-CRP, IL-6 and MMP-9 were 1.745 (1.342-2.270), 1.223 (1.018-1.533) and 1.284 (1.082-1.423), respectively. Furthermore, inflammatory marker levels were the risk factor for deep or infratentorial CMBs and lobar CMBs. Conclusion: The age, prevalence of hypertension, silent lacunar infarction, white matter lesion, MoCA Score, the using rate of antithrombotic drugs and serum hs-CRP, IL-6, and MMP-9 levels were the independent risk factors for CMBs. 展开更多
关键词 CEREBRAL MICROBLEED traditional risk factor INFLAMMATORY MARKER level susceptibility-weighted imaging
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Original article :Cerebral microbleeds prevalence, distribution and risk factors in northeast population without preceding large-area stroke 被引量:25
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作者 LIU Peng-fei CUI Ying-zhe +1 位作者 NA Jing GAO Pei-yi 《Chinese Medical Journal》 SCIE CAS CSCD 2010年第3期286-290,共5页
背景服的 microbleeds (CMB ) 在怀疑脑血管的疾病的病人经常发生并且他们是原则在有无临床症状的神经病学的缺陷的病人的 X 光线照相术的调查结果。学习是在一个未来的医院病人估计流行,分发,严厉和 CMB 的联系临床的特征的这的目的... 背景服的 microbleeds (CMB ) 在怀疑脑血管的疾病的病人经常发生并且他们是原则在有无临床症状的神经病学的缺陷的病人的 X 光线照相术的调查结果。学习是在一个未来的医院病人估计流行,分发,严厉和 CMB 的联系临床的特征的这的目的基于为怀疑的脑血管的疾病经历大脑 MRI 的队,与已知的 intracranial 出血或优先的大区域的 stroke.Methods 排除盒子学习人口由与T2~被评估的 447 个病人组成了*与白色一起检测 CMB 损害数字,地点,和他们的协会的坡度回响序列有关系 hyperintens CMB 的分发是 43.95% 外皮, 19.77% thalamic, 14.41% 在 brainstem, 11.58% 小脑, 6.21% periventricular 白人物质, 5.64% 包含基础 ganglia 区域,并且 0.28% 包含马头鱼尾的怪兽。在 CMB 和进展年龄的存在之间有一个统计上重要的协会(调整或 2.082, P < 0.01 ) ,高血压的严厉(调整或 2.208, P < 0.01 ) 。另外有一统计上重要(P < 0.01 ) 在 CMB 的存在和高血压和白物质的严厉之间的关联 lesions.Conclusions CMB 没有优先的大区域的击在病人经常发生为大脑 MRI 被提交为的人,怀疑了脑血管的疾病。有高血压的严厉和服的白事变化的存在的 CMB 相互关联的严厉由 MRI 检测了。 展开更多
关键词 脑血管疾病 内出血 中风 面积 危险因素 人口 发生率 临床特征
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VEGF及VEGF受体-2基因多态性与阿尔茨海默病患者脑微出血的相关性研究 被引量:1
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作者 张金彪 孙海荣 +5 位作者 李梦凡 沈腾群 王彤 赵俊武 李芳 李振光 《医学理论与实践》 2023年第4期544-548,543,共6页
目的:探讨血管内皮生长因子(VEGF)或VEGF受体-2(VEGFR2)基因的单核苷酸多态性(SNPs)是否与阿尔茨海默病(AD)中脑微出血(CMBs)风险增加相关。方法:对406例AD患者和332例非AD患者进行了基因分型,包括VEGF-116G> A,-460T>C,405G>C... 目的:探讨血管内皮生长因子(VEGF)或VEGF受体-2(VEGFR2)基因的单核苷酸多态性(SNPs)是否与阿尔茨海默病(AD)中脑微出血(CMBs)风险增加相关。方法:对406例AD患者和332例非AD患者进行了基因分型,包括VEGF-116G> A,-460T>C,405G>C,+936C>T,VEGFR2-604T>C,-1719T>A,Val297Ile SNPs。采用多因素Logistic回归分析评估AD患者伴或不伴CMBs的VEGF及VEGFR2基因变异之间的关系。结果:对比伴和不伴CMBs的AD患者,VEGF-116G>A,-460T>C,405G>C,+936C>T SNPs的基因频率无显著差异。在校正了年龄、性别、脑血管危险因素和携带至少一个APOEε4等位基因后,在VEGF受体-2基因中,变异型-1719T>A与AD易感性增加相关,与野生型基因型相比,变异型297Ile与AD和CMBs的易感性增加相关。结论:VEGFR2 Val297Ile SNP可能作为中国北方汉族人群AD或CMBs风险增加的遗传标记。 展开更多
关键词 阿尔茨海默病 VEGF VEGF受体-2 遗传多态性 脑微出血
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脑微出血对脑梗死后卒中复发的影响
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作者 吴波娜 吴婧 +2 位作者 曹德峰 马爱金 陈文亚 《医学研究与战创伤救治》 CAS 北大核心 2023年第10期1072-1076,共5页
目的 对脑微出血与急性脑梗死后复发性卒中进行研究,探讨伴有脑微出血的患者出现卒中复发的时间规律,为该类患者的二级预防精准化治疗方案提供新的临床依据。方法 收集2015年1月至2019年6月常州市武进人民医院神经内科住院的432例急性... 目的 对脑微出血与急性脑梗死后复发性卒中进行研究,探讨伴有脑微出血的患者出现卒中复发的时间规律,为该类患者的二级预防精准化治疗方案提供新的临床依据。方法 收集2015年1月至2019年6月常州市武进人民医院神经内科住院的432例急性脑梗死患者。根据纳入标准最后纳入413例患者。根据有无脑微出血分为无脑微出血组(n=172),脑微出血组(n=241)。脑微出血按数目分为无、轻度(132例)、中度(79例)、重度(30例)。根据脑微出血分布位置分为脑叶组、深部组及混合组。随访2年,分析两组缺血性卒中复发及出血性复发之间的差异性,并分析不同程度及位置的脑微出血对卒中复发的影响。结果 413例患者在随访2年内有75例(18.16%)患者出现卒中复发,缺血性卒中和出血性卒中复发分别为62例(15.01%)、13例(3.15%)。脑微出血组高血压及缺血性卒中复发比例高于无脑微出血组(P<0.05)。脑微出血组2年累积卒中复发率明显高于无脑微出血组(P_(Log-Rank)=0.001)。多元COX回归显示脑微出血(RR=2.09, 95%CI:1.21~3.60)是脑梗死后卒中复发的独立危险因素,进一步分析提示脑微出血为脑梗死后缺血性卒中复发的独立危险因素(RR=2.09,95%CI:1.15~3.81)。不同数目的脑微出血脑梗死复发率差异有统计学意义(P=0.014)。结论 即使长期抗栓治疗,伴有脑微出血的患者出现脑梗死复发率仍高于无脑微出血患者,且随着时间延长,脑出血风险亦增加,提示伴有脑微出血的脑梗死抗栓治疗仍需按指南使用抗栓治疗。 展开更多
关键词 脑微出血 复发 脑梗死 颅内出血
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