1
|
Sagar MV, Ferrer NR, Mehdipour Ghazi M, Klein KV, Jimenez-Solem E, Nielsen M, Kruuse C. COVID-19-associated cerebral microbleeds in the general population. Brain Commun 2024; 6:fcae127. [PMID: 38887702 PMCID: PMC11181935 DOI: 10.1093/braincomms/fcae127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 02/17/2024] [Accepted: 04/12/2024] [Indexed: 06/20/2024] Open
Abstract
Cerebral microbleeds are frequent incidental findings on brain MRI and have previously been shown to occur in Coronavirus Disease 2019 (COVID-19) cohorts of critically ill patients. We aimed to determine the risk of having microbleeds on medically indicated brain MRI and compare non-hospitalized COVID-19-infected patients with non-infected controls. In this retrospective case-control study, we included patients over 18 years of age, having an MRI with a susceptibility-weighted sequence, between 1 January 2019 and 1 July 2021. Cases were identified based on a positive reverse transcriptase polymerase chain reaction test for SARS-CoV-2 and matched with three non-exposed controls, based on age, sex, body mass index and comorbidities. The number of cerebral microbleeds on each scan was determined using artificial intelligence. We included 73 cases and 219 matched non-exposed controls. COVID-19 was associated with significantly greater odds of having cerebral microbleeds on MRI [odds ratio 2.66 (1.23-5.76, 95% confidence interval)], increasingly so when patients with dementia and hospitalized patients were excluded. Our findings indicate that cerebral microbleeds may be associated with COVID-19 infections. This finding may add to the pathophysiological considerations of cerebral microbleeds and help explain cases of incidental cerebral microbleeds in patients with previous COVID-19.
Collapse
Affiliation(s)
- Malini V Sagar
- Department of Neurology, Copenhagen University Hospital—Herlev and Gentofte, Herlev 2730, Denmark
| | - Neus R Ferrer
- Department of Computer Science, University of Copenhagen, Copenhagen 2100, Denmark
| | | | - Kiril V Klein
- Department of Computer Science, University of Copenhagen, Copenhagen 2100, Denmark
| | - Espen Jimenez-Solem
- Department of Clinical Pharmacology, Copenhagen University Hospital—Bispebjerg and Frederiksberg, Copenhagen 2400, Denmark
| | - Mads Nielsen
- Department of Computer Science, University of Copenhagen, Copenhagen 2100, Denmark
| | - Christina Kruuse
- Department of Neurology, Copenhagen University Hospital—Herlev and Gentofte, Herlev 2730, Denmark
- Department of Brain and Spinal Cord Injury, Copenhagen University Hospital—Rigshospitalet, Copenhagen 2600, Denmark
| |
Collapse
|
2
|
Liu CH, Wu YL, Hsu CC, Lee TH. Early Antiplatelet Resumption and the Risks of Major Bleeding After Intracerebral Hemorrhage. Stroke 2023; 54:537-545. [PMID: 36621820 DOI: 10.1161/strokeaha.122.040500] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 10/28/2022] [Indexed: 01/10/2023]
Abstract
BACKGROUND The appropriate timing of resuming antithrombotic therapy after intracerebral hemorrhage (ICH) remains unclear. The aim of this study was to compare the risks of major bleeding between early and late antiplatelet resumption in ICH survivors. METHODS Between 2008 and 2017, ICH patients were available in the National Health Insurance Research Database. Patients with a medication possession ratio of antiplatelet treatment ≥50% before ICH and after antiplatelet resumption were screened. We excluded patients with atrial fibrillation, heart failure, under anticoagulant or hemodialysis treatment, and developed cerebrovascular events or died before antiplatelet resumption. Finally, 1584 eligible patients were divided into EARLY (≤30 days) and LATE groups (31-365 days after the index ICH) based on the timing of antiplatelet resumption. Patients were followed until the occurrence of a clinical outcome, end of 1-year follow-up, death, or until December 31, 2018. The primary outcome was recurrent ICH. The secondary outcomes included all-cause mortality, major hemorrhagic events, major occlusive vascular events, and ischemic stroke. Cox proportional hazard model after matching was used for comparison between the 2 groups. RESULTS Both the EARLY and LATE groups had a similar risk of 1-year recurrent ICH (EARLY versus LATE: 3.12% versus 3.27%; adjusted hazard ratio [AHR], 0.967 [95% CI, 0.522-1.791]) after matching. Both groups also had a similar risk of each secondary outcome at 1-year follow-up. Subgroup analyses disclosed early antiplatelet resumption in the patients without prior cerebrovascular disease were associated with lower risks of all-cause mortality (AHR, 0.199 [95% CI, 0.054-0.739]) and major hemorrhagic events (AHR, 0.090 [95% CI, 0.010-0.797]), while early antiplatelet resumption in the patients with chronic kidney disease were associated with a lower risk of ischemic stroke (AHR, 0.065 [95% CI, 0.012-0.364]). CONCLUSIONS Early resumption of antiplatelet was as safe as delayed antiplatelet resumption in ICH patients. Besides, those without prior cerebrovascular disease or with chronic kidney disease may benefit more from early antiplatelet resumption.
Collapse
Affiliation(s)
- Chi-Hung Liu
- Department of Neurology, Linkou Chang Gung Memorial Hospital, and College of Medicine, Chang Gung University, Taoyuan, Taiwan (C.-H.L., T.-H.L.)
- Institute of Health Policy and Management, College of Public Health, National Taiwan University, Taipei (C.-H.L.)
| | - Yi-Ling Wu
- Institute of Population Health Sciences, National Health Research Institutes, Miaoli, Taiwan (Y.-L.W., C.-C. H.)
| | - Chih-Cheng Hsu
- Institute of Population Health Sciences, National Health Research Institutes, Miaoli, Taiwan (Y.-L.W., C.-C. H.)
- National Center for Geriatrics and Welfare Research, National Health Research Institutes, Yunlin, Department of Family Medicine, Min-Sheng General Hospital, Taoyuan, and Department of Health Services Administration, China Medical University, Taichung, Taiwan (C.-C. H.)
| | - Tsong-Hai Lee
- Department of Neurology, Linkou Chang Gung Memorial Hospital, and College of Medicine, Chang Gung University, Taoyuan, Taiwan (C.-H.L., T.-H.L.)
| |
Collapse
|
3
|
Wang XB, Dong H, Qiu YG, Lou CC, Huang DY, Zhang J, Chen DH, Feng H, Fang X. Nomogram based on clinical and brain computed tomography characteristics for predicting more than 5 cerebral microbleeds in the hypertensive population. Front Neurol 2022; 13:955378. [PMID: 36237620 PMCID: PMC9551650 DOI: 10.3389/fneur.2022.955378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 09/07/2022] [Indexed: 11/13/2022] Open
Abstract
Background Cerebral microbleeds (CMBs) are common in the hypertensive population and can only be detected with magnetic resonance imaging (MRI). The anticoagulation and thrombolytic regimens for patients with >5 CMBs are different from those for patients with ≤ 5 CMBs. However, MRI is not suitable for evaluating CMBs in patients with MRI contraindications or acute ischemic stroke urgently requiring thrombolysis. We aimed to develop and validate a nomogram combining clinical and brain computed tomography (CT) characteristics for predicting >5 CMBs in a hypertensive population. Materials and methods In total, 160 hypertensive patients from 2016 to 2020 who were confirmed by MRI to have >5 (77 patients) and ≤ 5 CMBs (83) were retrospectively analyzed as the training cohort. Sixty-four hypertensive patients from January 2021 to February 2022 were included in the validation cohort. Multivariate logistic regression was used to evaluate >5 CMBs. A combined nomogram was constructed based on the results, while clinical and CT models were established according to the corresponding characteristics. Receiver operating characteristic (ROC) and calibration curves and decision curve analysis (DCA) were used to verify the models. Results In the multivariable analysis, the duration of hypertension, level of homocysteine, the number of lacunar infarcts (LIs), and leukoaraiosis (LA) score were included as factors associated with >5 CMBs. The clinical model consisted of the duration of hypertension and level of homocysteine, while the CT model consisted of the number of LIs and LA. The combined model consisted of the duration of hypertension, level of homocysteine, LI, and LA. The combined model achieved an area under the curve (AUC) of 0.915 (95% confidence interval [CI]: 0.860–0.953) with the training cohort and 0.887 (95% CI: 0.783–0.953) with the validation cohort, which were higher than those of the clinical model [training cohort: AUC, 0.797 (95% CI: 0.726, 0.857); validation cohort: AUC, 0.812 (95% CI: 0.695, 0.899)] and CT model [training cohort: AUC, 0.884 (95% CI: 0.824, 0.929); validation cohort: AUC, 0.868 (95% CI: 0.760, 0.940)]. DCA showed that the clinical value of the combined model was superior to that of the clinical model and CT model. Conclusion A combined model based on clinical and CT characteristics showed good diagnostic performance for predicting >5 CMBs in hypertensive patients.
Collapse
Affiliation(s)
- Xin-Bin Wang
- Department of Radiology, Xiaoshan Affiliated Hospital of Wenzhou Medical University, The First People's Hospital of Xiaoshan District, Hangzhou, China
| | - Hao Dong
- Department of Radiology, Xiaoshan Affiliated Hospital of Wenzhou Medical University, The First People's Hospital of Xiaoshan District, Hangzhou, China
| | - Yong-Gang Qiu
- Department of Radiology, Xiaoshan Affiliated Hospital of Wenzhou Medical University, The First People's Hospital of Xiaoshan District, Hangzhou, China
| | - Cun-Cheng Lou
- Department of Radiology, Xiaoshan Affiliated Hospital of Wenzhou Medical University, The First People's Hospital of Xiaoshan District, Hangzhou, China
| | - De-Yun Huang
- Department of Cardiology, Xiaoshan Affiliated Hospital of Wenzhou Medical University, The First People's Hospital of Xiaoshan District, Hangzhou, China
| | - Jing Zhang
- Department of Cardiology, Xiaoshan Affiliated Hospital of Wenzhou Medical University, The First People's Hospital of Xiaoshan District, Hangzhou, China
| | - Di-Hong Chen
- Department of Radiology, Xiaoshan Affiliated Hospital of Wenzhou Medical University, The First People's Hospital of Xiaoshan District, Hangzhou, China
| | - Han Feng
- Department of Radiology, Xiaoshan Affiliated Hospital of Wenzhou Medical University, The First People's Hospital of Xiaoshan District, Hangzhou, China
| | - Xu Fang
- Department of Radiology, Changhai Hospital, Shanghai, China
- *Correspondence: Xu Fang
| |
Collapse
|
4
|
Related Factors of Cerebral Hemorrhage after Cerebral Infarction and the Effect of Atorvastatin Combined with Intensive Nursing Care. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:9546006. [PMID: 35959354 PMCID: PMC9357761 DOI: 10.1155/2022/9546006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/13/2022] [Accepted: 07/14/2022] [Indexed: 11/17/2022]
Abstract
Background Cerebral infarction is a common neurological disease with high incidence, which is the main factor causing death and disability in adults in China. Cerebral hemorrhage transformation is a common clinical complication. High NIHSS score at admission, atrial fibrillation, and small artery occlusion cerebral infarction can increase the risk of cerebral infarction complicated with hemorrhage transformation. Aim To explore the related factors of cerebral hemorrhage transformation after cerebral infarction and the value of atorvastatin calcium tablets combined with early intensive care measures. Methods In this study, a case-control study was conducted. Sixty patients with hemorrhagic transformation after cerebral infarction admitted to the Department of Neurology of our hospital from January 2017 to June 2021 were selected as the observation group, and 90 patients with cerebral infarction without hemorrhagic transformation during the same period were selected as the control group. The risk factors of hemorrhagic transformation after cerebral infarction were analyzed. Results The results of logistic regression model showed that the increased National Institutes of Health Stroke Scale (NIHSS) score at admission, hypertension, atrial fibrillation, TOAST classification of small artery occlusion, and large infarction lesions were the risk factors for hemorrhagic transformation in patients with cerebral infarction (P < 0.05). After 2 weeks and 4 weeks of treatment, the NIHSS scores of the intervention group were lower than those of the conventional group (P < 0.05). NIHSS scores of the two groups after treatment were significantly lower than those before treatment (P < 0.05). After three months of treatment, the patients in the intervention group with GOS score of 5 points accounted for 16.67%, and the patients with GOS score of 4 points accounted for 56.67%. The patients in the conventional group with GOS score of 5 points accounted for 6.67%, and the patients with GOS score of 4 points accounted for 33.33%. The prognosis of the intervention group was better than that of the conventional group on the whole (P < 0.05). Conclusion Patients with hypertension, large infarction lesions, high NIHSS score at admission, atrial fibrillation, and small artery occlusion cerebral infarction can increase the risk of bleeding transformation in patients with cerebral infarction. For patients with bleeding transformation, atorvastatin calcium tablets combined with early intensive nursing intervention has a certain value for improving the prognosis of patients.
Collapse
|
5
|
Wei Z, Chen X, Huang J, Wang Z, Yao T, Gao C, Wang H, Li P, Ye W, Li Y, Yao N, Zhang R, Tang N, Wang F, Hu J, Yi D, Wu Y. Construction of a Medical Micro-Object Cascade Network for Automated Segmentation of Cerebral Microbleeds in Susceptibility Weighted Imaging. Front Bioeng Biotechnol 2022; 10:937314. [PMID: 35935490 PMCID: PMC9350526 DOI: 10.3389/fbioe.2022.937314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 06/20/2022] [Indexed: 11/20/2022] Open
Abstract
Aim: The detection and segmentation of cerebral microbleeds (CMBs) images are the focus of clinical diagnosis and treatment. However, segmentation is difficult in clinical practice, and missed diagnosis may occur. Few related studies on the automated segmentation of CMB images have been performed, and we provide the most effective CMB segmentation to date using an automated segmentation system. Materials and Methods: From a research perspective, we focused on the automated segmentation of CMB targets in susceptibility weighted imaging (SWI) for the first time and then constructed a deep learning network focused on the segmentation of micro-objects. We collected and marked clinical datasets and proposed a new medical micro-object cascade network (MMOC-Net). In the first stage, U-Net was utilized to select the region of interest (ROI). In the second stage, we utilized a full-resolution network (FRN) to complete fine segmentation. We also incorporated residual atrous spatial pyramid pooling (R-ASPP) and a new joint loss function. Results: The most suitable segmentation result was achieved with a ROI size of 32 × 32. To verify the validity of each part of the method, ablation studies were performed, which showed that the best segmentation results were obtained when FRN, R-ASPP and the combined loss function were used simultaneously. Under these conditions, the obtained Dice similarity coefficient (DSC) value was 87.93% and the F2-score (F2) value was 90.69%. We also innovatively developed a visual clinical diagnosis system that can provide effective support for clinical diagnosis and treatment decisions. Conclusions: We created the MMOC-Net method to perform the automated segmentation task of CMBs in an SWI and obtained better segmentation performance; hence, this pioneering method has research significance.
Collapse
Affiliation(s)
- Zeliang Wei
- Department of Health Statistics, College of Preventive Medicine, Army Medical University, Chongqing, China
| | - Xicheng Chen
- Department of Health Statistics, College of Preventive Medicine, Army Medical University, Chongqing, China
| | - Jialu Huang
- Department of Neurology, Southwest Hospital, Army Medical University, Chongqing, China
| | - Zhenyan Wang
- Department of Health Statistics, College of Preventive Medicine, Army Medical University, Chongqing, China
| | - Tianhua Yao
- Department of Health Statistics, College of Preventive Medicine, Army Medical University, Chongqing, China
| | - Chengcheng Gao
- Department of Health Statistics, College of Preventive Medicine, Army Medical University, Chongqing, China
| | - Haojia Wang
- Department of Health Statistics, College of Preventive Medicine, Army Medical University, Chongqing, China
| | - Pengpeng Li
- Department of Health Statistics, College of Preventive Medicine, Army Medical University, Chongqing, China
| | - Wei Ye
- Department of Health Statistics, College of Preventive Medicine, Army Medical University, Chongqing, China
| | - Yang Li
- Department of Health Statistics, College of Preventive Medicine, Army Medical University, Chongqing, China
| | - Ning Yao
- Department of Health Statistics, College of Preventive Medicine, Army Medical University, Chongqing, China
| | - Rui Zhang
- Department of Health Statistics, College of Preventive Medicine, Army Medical University, Chongqing, China
| | - Ning Tang
- Department of Medical Engineering, The 953 Hospital of the Chinese People’s Liberation Army, Shigatse, China
| | - Fei Wang
- Medical Big Data and Artificial Intelligence Center, Southwest Hospital, Army Medical University, Chongqing, China
| | - Jun Hu
- Department of Neurology, Southwest Hospital, Army Medical University, Chongqing, China
- *Correspondence: Jun Hu, ; Dong Yi, ; Yazhou Wu,
| | - Dong Yi
- Department of Health Statistics, College of Preventive Medicine, Army Medical University, Chongqing, China
- *Correspondence: Jun Hu, ; Dong Yi, ; Yazhou Wu,
| | - Yazhou Wu
- Department of Health Statistics, College of Preventive Medicine, Army Medical University, Chongqing, China
- *Correspondence: Jun Hu, ; Dong Yi, ; Yazhou Wu,
| |
Collapse
|
6
|
Wang B, Li X, Li H, Xiao L, Zhou Z, Chen K, Gui L, Hou X, Fan R, Chen K, Wu W, Li H, Hu X. Clinical, Radiological and Pathological Characteristics Between Cerebral Small Vessel Disease and Multiple Sclerosis: A Review. Front Neurol 2022; 13:841521. [PMID: 35812110 PMCID: PMC9263123 DOI: 10.3389/fneur.2022.841521] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 05/19/2022] [Indexed: 11/13/2022] Open
Abstract
Cerebral small vessel disease (CSVD) and multiple sclerosis (MS) are a group of diseases associated with small vessel lesions, the former often resulting from the vascular lesion itself, while the latter originating from demyelinating which can damage the cerebral small veins. Clinically, CSVD and MS do not have specific signs and symptoms, and it is often difficult to distinguish between the two from the aspects of the pathology and imaging. Therefore, failure to correctly identify and diagnose the two diseases will delay early intervention, which in turn will affect the long-term functional activity for patients and even increase their burden of life. This review has summarized recent studies regarding their similarities and difference of the clinical manifestations, pathological features and imaging changes in CSVD and MS, which could provide a reliable basis for the diagnosis and differentiation of the two diseases in the future.
Collapse
Affiliation(s)
- Bijia Wang
- Department of Neurology, First Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Xuegang Li
- Department of Neurosurgery, First Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Haoyi Li
- Department of Neurosurgery, First Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Li Xiao
- Department of Neurology, First Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Zhenhua Zhou
- Department of Neurology, First Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Kangning Chen
- Department of Neurology, First Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Li Gui
- Department of Neurology, First Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Xianhua Hou
- Department of Neurology, First Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Rong Fan
- Department of Neurology, First Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Kang Chen
- Department of Radiology, First Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Wenjing Wu
- Department of Radiology, First Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Haitao Li
- Department of Radiology, First Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
- *Correspondence: Haitao Li
| | - Xiaofei Hu
- Department of Radiology, First Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
- Xiaofei Hu
| |
Collapse
|
7
|
Bianconi E, Del Freo G, Salvadori E, Barbato C, Formelli B, Pescini F, Pracucci G, Sarti C, Cesari F, Chiti S, Diciotti S, Gori AM, Marzi C, Fainardi E, Giusti B, Marcucci R, Bertaccini B, Poggesi A. Can CHA 2DS 2-VASc and HAS-BLED Foresee the Presence of Cerebral Microbleeds, Lacunar and Non-Lacunar Infarcts in Elderly Patients With Atrial Fibrillation? Data From Strat-AF Study. Front Neurol 2022; 13:883786. [PMID: 35645956 PMCID: PMC9135961 DOI: 10.3389/fneur.2022.883786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 04/13/2022] [Indexed: 11/13/2022] Open
Abstract
Anticoagulants reduce embolic risk in atrial fibrillation (AF), despite increasing hemorrhagic risk. In this context, validity of congestive heart failure, hypertension, age ≥ 75 years, diabetes, stroke, vascular disease, age 65-74 years and sex category (CHA2DS2-VASc) and hypertension, abnormal renal/liver function, stroke, bleeding history or predisposition, labile international normalized ratio, elderly, drugs/alcohol concomitantly (HAS-BLED) scales, used to respectively evaluate thrombotic and hemorrhagic risks, is incomplete. In patients with AF, brain MRI has led to the increased detection of "asymptomatic" brain changes, particularly those related to small vessel disease, which also represent the pathologic substrate of intracranial hemorrhage, and silent brain infarcts, which are considered risk factors for ischemic stroke. Routine brain MRI in asymptomatic patients with AF is not yet recommended. Our aim was to test predictive ability of risk stratification scales on the presence of cerebral microbleeds, lacunar, and non-lacunar infarcts in 170 elderly patients with AF on oral anticoagulants. Ad hoc developed R algorithms were used to evaluate CHA2DS2-VASc and HAS-BLED sensitivity and specificity on the prediction of cerebrovascular lesions: (1) Maintaining original items' weights; (2) augmenting weights' range; (3) adding cognitive, motor, and depressive scores. Accuracy was poor for each outcome considering both scales either in phase 1 or phase 2. Accuracy was never improved by the addition of cognitive scores. The addition of motor and depressive scores to CHA2DS2-VASc improved accuracy for non-lacunar infarcts (sensitivity = 0.70, specificity = 0.85), and sensitivity for lacunar-infarcts (sensitivity = 0.74, specificity = 0.61). Our results are a very first step toward the attempt to identify those elderly patients with AF who would benefit most from brain MRI in risk stratification.
Collapse
Affiliation(s)
- Elisa Bianconi
- Department of Statistics, Computer Science, Applications ≪ G. Parenti ≫, University of Florence, Florence, Italy
| | - Giulia Del Freo
- Department of Statistics, Computer Science, Applications ≪ G. Parenti ≫, University of Florence, Florence, Italy
| | - Emilia Salvadori
- NEUROFARBA Department, Neuroscience Section, University of Florence, Florence, Italy
| | - Carmen Barbato
- NEUROFARBA Department, Neuroscience Section, University of Florence, Florence, Italy
- Don Carlo Gnocchi Foundation, Milan, Italy
| | - Benedetta Formelli
- NEUROFARBA Department, Neuroscience Section, University of Florence, Florence, Italy
| | | | - Giovanni Pracucci
- NEUROFARBA Department, Neuroscience Section, University of Florence, Florence, Italy
| | - Cristina Sarti
- NEUROFARBA Department, Neuroscience Section, University of Florence, Florence, Italy
- Stroke Unit, Careggi University Hospital, Florence, Italy
| | - Francesca Cesari
- Central Laboratory, Careggi University Hospital, Florence, Italy
| | - Stefano Chiti
- Department Health Professions, U.O. Research and Development, Careggi University Hospital, Florence, Italy
| | - Stefano Diciotti
- Department of Electrical, Electronic, and Information Engineering “Guglielmo Marconi”, University of Bologna, Cesena, Italy
| | - Anna Maria Gori
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
- Atherothrombotic Diseases Center, Careggi University Hospital, Florence, Italy
| | - Chiara Marzi
- Institute of Applied Physics “Nello Carrara” (IFAC), National Research Council of Italy (CNR), Florence, Italy
| | - Enrico Fainardi
- Neuroradiology Unit, Department of Experimental and Clinical Biomedical Sciences, Careggi University Hospital, University of Florence, Florence, Italy
| | - Betti Giusti
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
- Atherothrombotic Diseases Center, Careggi University Hospital, Florence, Italy
| | - Rossella Marcucci
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
- Atherothrombotic Diseases Center, Careggi University Hospital, Florence, Italy
| | - Bruno Bertaccini
- Department of Statistics, Computer Science, Applications ≪ G. Parenti ≫, University of Florence, Florence, Italy
| | - Anna Poggesi
- NEUROFARBA Department, Neuroscience Section, University of Florence, Florence, Italy
- Don Carlo Gnocchi Foundation, Milan, Italy
- Stroke Unit, Careggi University Hospital, Florence, Italy
| |
Collapse
|
8
|
Fan P, Shan W, Yang H, Zheng Y, Wu Z, Chan SW, Wang Q, Gao P, Liu Y, He K, Sui B. Cerebral Microbleed Automatic Detection System Based on the “Deep Learning”. Front Med (Lausanne) 2022; 9:807443. [PMID: 35402427 PMCID: PMC8988858 DOI: 10.3389/fmed.2022.807443] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 02/22/2022] [Indexed: 11/18/2022] Open
Abstract
Objective To validate the reliability and efficiency of clinical diagnosis in practice based on a well-established system for the automatic segmentation of cerebral microbleeds (CMBs). Method This is a retrospective study based on Magnetic Resonance Imaging-Susceptibility Weighted Imaging (MRI-SWI) datasets from 1,615 patients (median age, 56 years; 1,115 males, 500 females) obtained between September 2018 and September 2019. All patients had been diagnosed with cerebral small vessel disease (CSVD) with clear cerebral microbleeds (CMBs) on MRI-SWI. The patients were divided into training and validation cohorts of 1,285 and 330 patients, respectively, and another 30 patients were used for internal testing. The model training and validation data were labeled layer by layer and rechecked by two neuroradiologists with 15 years of work experience. Afterward, a three-dimensional convolutional neural network (CNN) was applied to the MRI data from the training and validation cohorts to construct a deep learning system (DLS) that was tested with the 72 patients, independent of the aforementioned MRI cohort. The DLS tool was used as a segmentation program for these 72 patients. These results were evaluated and revised by five neuroradiologists and subjected to an output analysis divided into the missed label, incorrect label, and correct label. The interneuroradiologists DLS agreement rate, which was assessed using the interrater agreement kappas test, was used for the quality analysis. Results In the detection and segmentation of the CMBs, the DLS achieved a Dice coefficient of 0.72. In the evaluation of the independent clinical data, the neuroradiologists reported that more than 90% of the lesions were directly detected and less than 10% of lesions were incorrectly labeled or the label was missed by our DLS. The kappa value for interneuroradiologist DLS agreement reached 0.79 on average. Conclusion Based on the results, the automatic detection and segmentation of CMBs are feasible. The proposed well-trained DLS system might represent a trusted tool for the segmentation and detection of CMB lesions.
Collapse
Affiliation(s)
- Pingping Fan
- Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- National Clinical Research Center for Neurological Diseases, Beijing, China
- Tiantan Neuroimaging Center of Excellence, Beijing, China
| | - Wei Shan
- National Clinical Research Center for Neurological Diseases, Beijing, China
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- Beijing Institute for Brain Disorders, Beijing, China
- *Correspondence: Wei Shan,
| | - Huajun Yang
- National Clinical Research Center for Neurological Diseases, Beijing, China
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yu Zheng
- National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Zhenzhou Wu
- National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Shang Wei Chan
- National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Qun Wang
- National Clinical Research Center for Neurological Diseases, Beijing, China
- Tiantan Neuroimaging Center of Excellence, Beijing, China
- Beijing Institute for Brain Disorders, Beijing, China
| | - Peiyi Gao
- Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yaou Liu
- Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- National Clinical Research Center for Neurological Diseases, Beijing, China
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- Yaou Liu,
| | - Kunlun He
- Laboratory of Translational Medicine, Chinese PLA General Hospital, Beijing, China
- Key Laboratory of Ministry of Biomedical Engineering and Translational Medicine, People’s Liberation Army General Hospital, Beijing, China
- Kunlun He,
| | - Binbin Sui
- National Clinical Research Center for Neurological Diseases, Beijing, China
- Tiantan Neuroimaging Center of Excellence, Beijing, China
- Binbin Sui,
| |
Collapse
|
9
|
Li X, Yang S, Qin W, Yang L, Li Y, Hou Y, Huang Q, Hu W. Cerebral Microbleeds Were Related With Poor Cognitive Performances on the Dual Task Condition in Older Adults. Front Aging Neurosci 2022; 13:807753. [PMID: 35082660 PMCID: PMC8784411 DOI: 10.3389/fnagi.2021.807753] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/17/2021] [Indexed: 11/13/2022] Open
Abstract
Background: The dual task (DT) was commonly used to assess the risk of falls in older adults and patients with neurological disorders. However, the performance on DT conditions has not been well investigated in patients with cerebral microbleed (CMB). This study is aimed to compare the performance in DT tests between older adults with and without CMB, and to explore the association between CMB and cognitive performances of DT.Methods: This is a cross-sectional study. A total of 211 old adults participated, involving 68 CMB patients. The task protocol involved two global cognition tests, two single cognitive tests (serial 7 subtraction and semantic fluency), two single motor tasks [8-m walking and timed up and go test (TUG)], and three DT tests [walking and serial subtraction (WSS), walking and semantic fluency (WSF), and TUG and serial subtraction (TUGSS)]. The time taken to complete each task and the number of correct responses were recorded. For each DT condition, the correct response rate (CRR) and the dual-task effect (DTE) for the correct number were calculated.Results: Compared with subjects without CMB, CMB patients had worse cognitive performances on DT condition in CRR of WSS (p = 0.003), WSF (p = 0.030) and TUGSS (p = 0.006), and DTE of WSS (p = 0.017). Binary logistic regression analysis showed that the presence of CMB was an independent risk factor for the impairment group for CRR of TUGSS (OR, 2.54; 95% CI, 1.11–5.82; p = 0.027) with the adjustment for confounders, rather than CRR of WSS and WSF, or DTE of WSS. Multiple linear regression analysis showed that CRR of TUGSS decreased with the increase of CMB number grades (β, −0.144; 95% CI, −0.027, −0.002; p = 0.028).Conclusion: The present study indicated that CMBs were closely associated with poor cognitive performances on DT in the elderly. Strongest effect size was seen for CRR of TUGSS, where performance deficits increased in proportion to the degree of CMB burden.
Collapse
|
10
|
Liang C, Wang J, Feng M, Zhang N, Guo L. White matter changes, duration of hypertension, and age are associated with cerebral microbleeds in patients with different stages of hypertension. Quant Imaging Med Surg 2022; 12:119-130. [PMID: 34993065 DOI: 10.21037/qims-21-28] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 05/31/2021] [Indexed: 01/16/2023]
Abstract
BACKGROUND We aimed to investigate risk factors for the presence and number of cerebral microbleeds (CMBs) in patients with different stages of hypertension stages, with an emphasis on the relationship between white matter changes (WMCs) and CMBs. METHODS Since 2016, participants aged 40 years or more have been evaluated for the presence of CMBs using enhanced 3D multiecho GE T2*-weighted angiography (ESWAN) sequences. The Mann-Whitney U test and Pearson χ2 test were used to compare the clinical characteristics between the CMB and no-CMB patient groups. Furthermore, we used Spearman's rank correlation analysis to examine the associations between the degree of CMB severity and other important factors. RESULTS CMBs were detected in 110 (36.7%) of 300 participants. Among patients with stage 2 hypertension, the majority also had CMBs (61.8%, 68/110). CMBs were positively correlated with age, hypertension stage, duration of hypertension, WMCs, and silent cerebral infarction. Patients with grade 3 WMCs were significantly more likely to have CMBs than those without WMCs; this association was true for both patients with stage 1 and those with stage 2 hypertension. In patients with stage 1 or stage 2 hypertension lasting longer than 20 years, the majority had CMBs (69.0%, 29/42; 69.1%, 47/68). The results of binary logistic regression indicated that a more severe hypertension stage, longer duration of hypertension, aging, having silent cerebral infarction and higher values of WMC increase the likelihood of the occurrence of CMBs. CONCLUSIONS CMBs detected in hypertensive patients were more likely to occur in deep structures, and the grade of WMCs and duration of hypertension were more closely associated with the CMB degree than with age.
Collapse
Affiliation(s)
- Changhu Liang
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Jing Wang
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Mengmeng Feng
- Department of Radiology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Nan Zhang
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Lingfei Guo
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| |
Collapse
|
11
|
Jia Y, Wang Y, Yang K, Yang R, Wang Z. Effect of Minimally Invasive Puncture Drainage and Conservative Treatment on Prognosis of Patients with Cerebral Hemorrhage. JOURNAL OF HEALTHCARE ENGINEERING 2021; 2021:2401256. [PMID: 34976323 PMCID: PMC8718308 DOI: 10.1155/2021/2401256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/16/2021] [Accepted: 11/23/2021] [Indexed: 12/04/2022]
Abstract
The objective of this study was to explore the effect of minimally invasive puncture drainage under unsupervised learning algorithm and conservative treatment on the prognosis of patients with cerebral hemorrhage. Fifty patients with cerebral hemorrhage were selected as the research objects. The CT images of patients were segmented by unsupervised learning algorithm, and the application value of unsupervised learning algorithm on CT images of patients with cerebral hemorrhage was evaluated. According to the treatment wishes of the patients themselves and their authorizers, they were divided into 30 patients with cerebral hemorrhage in the minimally invasive group and 20 patients with cerebral hemorrhage in the conservative group. The incidence rate of complications of cerebral hemorrhage, the length of hospitalization of the two groups, hematoma volume at admission, 3 days and 7 days after operation, and the hematoma dissipation rate on the 3rd and 7th day after operation were used as the evaluation index of therapeutic effect. MRS and ADL scores were used as prognostic indicators. The results show that K-means clustering algorithm has high quality and short time for CT image segmentation. The overall incidence rate of complications in minimally invasive group was 10%, lower than that in conservative group (25%) (P < 0.05), and the length of hospitalization in minimally invasive group was longer than that in conservative group (P < 0.05). The hematoma volume of minimally invasive group was 16.5 ± 2.4 mL on the 3rd day after operation, and that of conservative group was 27.4 ± 1.8 mL. There was significant difference between the two groups (P < 0.05). In addition, CT showed that the hematoma reduction degree of minimally invasive group was higher than that of conservative group, and the hematoma dissipation rate was higher than that of conservative group on the 3rd and 7th day (P < 0.05). The good MRS score in minimally invasive group was 3.15 times that in conservative group, and the good ADL score was 1.6 times that in conservative group, and there was significant difference in the total score between the two groups (P < 0.05). Minimally invasive puncture drainage is better than conservative treatment in the clearance of hematoma, which is conducive to the recovery of neurological function and daily life of patients with cerebral hemorrhage and is of great help to the prognosis of patients.
Collapse
Affiliation(s)
- Yanxun Jia
- Department of Neurosurgery, Eighth People's Hospital of Hengshui City, Hengshui 253800, China
| | - Yongbin Wang
- Department of Neurology, Eighth People's Hospital of Hengshui City, Hengshui 253800, China
| | - Kaijiao Yang
- Department of Neurology, Eighth People's Hospital of Hengshui City, Hengshui 253800, China
| | - Rui Yang
- Department of Neurosurgery, Eighth People's Hospital of Hengshui City, Hengshui 253800, China
| | - Zhenzhen Wang
- Department of Neurosurgery, Eighth People's Hospital of Hengshui City, Hengshui 253800, China
| |
Collapse
|
12
|
Cerebral microbleeds in vascular dementia from clinical aspects to host-microbial interaction. Neurochem Int 2021; 148:105073. [PMID: 34048844 DOI: 10.1016/j.neuint.2021.105073] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 05/15/2021] [Accepted: 05/16/2021] [Indexed: 12/30/2022]
Abstract
Vascular dementia is the second leading cause of dementia after Alzheimer's disease in the elderly population worldwide. Cerebral microbleeds (CMBs) are frequently observed in MRI of elderly subjects and considered as a possible surrogate marker. The number and location of CMBs reflect the severity of diseases and the underlying pathologies may involve cerebral amyloid angiopathy or hypertensive vasculopathy. Accumulating evidence demonstrated the clinicopathological discrepancies of CMBs, the clinical significance of CMBs associated with other MRI markers of cerebral small vessel disease, cognitive impairments, serum, and cerebrospinal fluid biomarkers. Moreover, emerging evidence has shown that genetic factors and gene-environmental interactions might shed light on the underlying etiologies of CMBs, focusing on blood-brain-barrier and inflammation. In this review, we introduce recent genetic and microbiome studies as a cutting-edge approach to figure out the etiology of CMBs through the "microbe-brain-oral axis" and "microbiome-brain-gut axis." Finally, we propose novel concepts, "microvascular matrisome" and "imbalanced proteostasis," which may provide better perspectives for elucidating the pathophysiology of CMBs and future development of therapeutics for vascular dementia using CMBs as a surrogate marker.
Collapse
|
13
|
Preliminary Study on the Application of Ultrahigh Field Magnetic Resonance in Moyamoya Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5653948. [PMID: 33520085 PMCID: PMC7817260 DOI: 10.1155/2021/5653948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 11/08/2020] [Accepted: 11/30/2020] [Indexed: 12/20/2022]
Abstract
Magnetic resonance imaging (MRI) is widely used for the evaluation of moyamoya disease (MMD). In this paper, we describe the features of time-of-flight magnetic resonance angiography (TOF-MRA) and susceptibility-weighted imaging (SWI) at 7 T in a series of MMD patients. In this prospective pilot study, 7 patients (median age: 45.6 years; range: 30-52 years) with MMD and no contraindications for MRI underwent T2-weighted, SWI, and TOF-MRA sequences using a research 7 T head-only scanner. We show that such sequences at ultrahigh field (UHF) represent new and valuable approaches to unravel and characterize MMD. While SWI reveals more remarkable imaging signs related to an improved magnitude and phase contrast imaging, the collateral network pathways in MMD could be excellently delineated using 7 T TOF-MRA. In particular, using SWI and MRA fusion images in UHF MRI helps to improve the detection of bleeding points in hemorrhagic MMD. Our findings indicate that ultrahigh field MRI is very promising to access the severity of the disease and may facilitate revascularization surgery of MMD patients.
Collapse
|
14
|
Cheng Y, Wang Y, Song Q, Qiu K, Liu M. Use of anticoagulant therapy and cerebral microbleeds: a systematic review and meta-analysis. J Neurol 2019; 268:1666-1679. [PMID: 31616992 DOI: 10.1007/s00415-019-09572-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 10/02/2019] [Accepted: 10/03/2019] [Indexed: 02/05/2023]
Abstract
BACKGROUND Anticoagulant therapy increases the risk that cerebral microbleeds (CMBs) progress to intracerebral hemorrhage, but whether the therapy increases risk of CMB occurrence is unclear. We performed a systematic review and meta-analysis to investigate the potential association between anticoagulant use and CMB occurrence in stroke and stroke-free individuals. METHODS We searched observational studies in PubMed, Ovid EMBASE, and Cochrane Library from their inception until September 2019. We calculated the pooled odds ratio (OR) and 95% confidence interval (CI) for the prevalence and incidence of CMBs in anticoagulant users relative to non-anticoagulant users. RESULTS Forty-seven studies with 25,245 participants were included. The pooled analysis showed that anticoagulant use was associated with CMB prevalence (OR 1.54, 95% CI 1.26-1.88). The association was observed in subgroups stratified by type of participants: stroke-free, OR 1.86, 95% CI 1.25-2.77; ischemic stroke/transient ischemic attack, OR 1.33, 95% CI 1.06-1.67; and intracerebral hemorrhage, OR 2.26, 95% CI 1.06-4.83. Anticoagulant use was associated with increased prevalence of strictly lobar CMBs (OR 1.68, 95% CI 1.22-2.32) but not deep/infratentorial CMBs. Warfarin was associated with increased CMB prevalence (OR 1.64, 95% CI 1.23-2.18), but novel oral anticoagulants were not. Anticoagulant users showed higher incidence of CMBs during long-term follow-up (OR 1.72, 95% CI 1.22-2.44). CONCLUSION Anticoagulant use is associated with higher prevalence and incidence of CMBs. This association appears to depend on location of CMBs and type of anticoagulants. More longitudinal investigations with adjustment for confounders are required to establish the causality.
Collapse
Affiliation(s)
- Yajun Cheng
- Department of Neurology, Center of Cerebrovascular Disease, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Yanan Wang
- Department of Neurology, Center of Cerebrovascular Disease, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Quhong Song
- Department of Neurology, Center of Cerebrovascular Disease, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Ke Qiu
- West China School of Medicine, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Ming Liu
- Department of Neurology, Center of Cerebrovascular Disease, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
| |
Collapse
|