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Sun B, Wang L, Li X, Zhang J, Zhang J, Tian J, Mossa-Basha M, Xu J, Zhou Y, Zhao H, Zhu C. Delayed Enhancement of Intracranial Atherosclerotic Plaque Can Better Differentiate Culprit Lesions: A Multiphase Contrast-Enhanced Vessel Wall MRI Study. AJNR Am J Neuroradiol 2024; 45:262-270. [PMID: 38388686 DOI: 10.3174/ajnr.a8132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 12/05/2023] [Indexed: 02/24/2024]
Abstract
BACKGROUND AND PURPOSE Intracranial plaque enhancement (IPE) identified by contrast-enhanced vessel wall MR imaging (VW-MR imaging) is an emerging marker of plaque instability related to stroke risk, but there was no standardized timing for postcontrast acquisition. We aim to explore the optimal postcontrast timing by using multiphase contrast-enhanced VW-MR imaging and to test its performance in differentiating culprit and nonculprit lesions. MATERIALS AND METHODS Patients with acute ischemic stroke due to intracranial plaque were prospectively recruited to undergo VW-MR imaging with 1 precontrast phase and 4 consecutive postcontrast phases (9 minutes and 13 seconds for each phase). The signal intensity (SI) values of the CSF and intracranial plaque were measured on 1 precontrast and 4 postcontrast phases to determine the intracranial plaque enhancement index (PEI). The dynamic changes of the PEI were compared between culprit and nonculprit plaques on the postcontrast acquisitions. RESULTS Thirty patients with acute stroke (aged 59 ± 10 years, 18 [60%] men) with 113 intracranial plaques were included. The average PEI of all intracranial plaques significantly increased (up to 14%) over the 4 phases. There was significantly increased PEI over the 4 phases for culprit plaques (an average increase of 23%), but this was not observed for nonculprit plaques. For differentiating culprit and nonculprit plaques, we observed that the performance of IPE in the second postcontrast phase (cutoff = 0.83, AUC = 0.829 [0.746-0.893]) exhibited superior accuracy when compared with PEI in the first postcontrast phase (cutoff = 0.48; AUC = 0.768 [0.680-0.843]) (P = .022). CONCLUSIONS A 9-minute delay of postcontrast acquisition can maximize plaque enhancement and better differentiate between culprit and nonculprit plaques. In addition, culprit and nonculprit plaques have different enhancement temporal patterns, which should be evaluated in future studies.
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Affiliation(s)
- Beibei Sun
- From the Department of Radiology, Ren Ji Hospital (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai China
- College of Health Science and Technology (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Radiology (M.M., C.Z.), University of Washington, Seattle, Washington
| | - Lingling Wang
- From the Department of Radiology, Ren Ji Hospital (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai China
- College of Health Science and Technology (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao Li
- From the Department of Radiology, Ren Ji Hospital (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai China
- College of Health Science and Technology (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jin Zhang
- From the Department of Radiology, Ren Ji Hospital (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai China
- College of Health Science and Technology (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jianjian Zhang
- From the Department of Radiology, Ren Ji Hospital (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai China
- College of Health Science and Technology (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiaqi Tian
- From the Department of Radiology, Ren Ji Hospital (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai China
- College of Health Science and Technology (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Mahmud Mossa-Basha
- Department of Radiology (M.M., C.Z.), University of Washington, Seattle, Washington
| | - Jianrong Xu
- From the Department of Radiology, Ren Ji Hospital (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai China
- College of Health Science and Technology (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan Zhou
- From the Department of Radiology, Ren Ji Hospital (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai China
- College of Health Science and Technology (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huilin Zhao
- From the Department of Radiology, Ren Ji Hospital (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai China
- College of Health Science and Technology (B.S., L.W., X.L., Jin Zhang, Jianjian Zhang, J.T., J.X., Y.Z., H.Z.), Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chengcheng Zhu
- Department of Radiology (M.M., C.Z.), University of Washington, Seattle, Washington
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Zhao Y, Song P, Feng P, Yuan S, Wu H, Cui J, Liu L, Zhang S, Miao R, Guo L, Xu W, Liu X. Plaque enhancement predicts recurrence in acute ischemic stroke patients with large artery intracranial atherosclerosis. J Stroke Cerebrovasc Dis 2023; 32:107406. [PMID: 37837801 DOI: 10.1016/j.jstrokecerebrovasdis.2023.107406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 09/22/2023] [Accepted: 10/01/2023] [Indexed: 10/16/2023] Open
Abstract
BACKGROUND The association between the degree of plaque enhancement and ischemic brain stroke recurrence remains unclear. We aimed to establish models to predict plaque enhancement and stroke recurrence. METHODS Seventy-eight participants with acute ischemic brain stroke due to intracranial arterial stenosis were recruited and divided into high enhancement (HE) and non-HE groups. The relationship between imaging characteristics (degree of stenosis, minimal lumen area, intraplaque hemorrhage, and plaque burden) and the degree of plaque contrast enhancement was analyzed. Inflammatory cytokine expression was examined by flow cytometry. Independent predictors of stroke recurrence were investigated via multivariate Cox proportional hazards regression analysis. Nomogram was used to construct a prediction model. Harrell's concordance indices (c-indices) and calibration curves were used to assess the discrimination of the nomogram. A risk prediction nomogram for prognosis was constructed. RESULTS Thirty-three participants were assigned to the HE group and 45 to the non-HE group. The degree of stenosis and plaque burden in the HE group was higher than that in the non-HE group (P<0.05). Multiple linear regression analysis showed the degree of stenosis was associated with HE (β=0.513; P=0.000). After adjusting for confounding factors, age (HR=1.115; 95%CI=1.034-1.203, P=0.005) and HE plaques (HR=10.457; 95%CI=1.176-93.018; P=0.035) were independent risk factors of stroke recurrence, whereas cytokine levels were not statistically significant between two group. CONCLUSIONS HE of intracranial atherosclerosis plaques is an independent factor for ischemic brain stroke recurrence.
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Affiliation(s)
- Yanying Zhao
- Department of Psychosomatic Medicine, Department of Neurology, The Second Hospital of Medical University, No. 215 Heping West Road, Shijiazhuang, Hebei 050000, China
| | - Peng Song
- Department of Radiology, The Second Hospital of Hebei Medical University, West 215, Heping Road, Shijiazhuang, Hebei 050000, China
| | - Pingyong Feng
- Department of Radiology, The Second Hospital of Hebei Medical University, West 215, Heping Road, Shijiazhuang, Hebei 050000, China
| | - Si Yuan
- Department of Neurology, The Second Hospital of Hebei Medical University, West 215, Heping Road, Shijiazhuang, Hebei 050000, China
| | - Haoran Wu
- Department of Neurology, The Second Hospital of Hebei Medical University, West 215, Heping Road, Shijiazhuang, Hebei 050000, China
| | - Junzhao Cui
- Department of Neurology, The Second Hospital of Hebei Medical University, West 215, Heping Road, Shijiazhuang, Hebei 050000, China
| | - Lijuan Liu
- Department of Neurology, The Second Hospital of Hebei Medical University, West 215, Heping Road, Shijiazhuang, Hebei 050000, China
| | - Shaoru Zhang
- Department of Neurology, The First Hospital of Hebei Medical University, No. 89 Donggang Road, Shijiazhuang, Hebei 050000, China
| | - Ruihan Miao
- Department of Neurology, The Second Hospital of Hebei Medical University, West 215, Heping Road, Shijiazhuang, Hebei 050000, China
| | - Li Guo
- Department of Neurology, The Second Hospital of Hebei Medical University, West 215, Heping Road, Shijiazhuang, Hebei 050000, China
| | - Weihai Xu
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Shuaifuyuan, Dongcheng District, Beijing 100730, China
| | - Xiaoyun Liu
- Department of Neurology, The Second Hospital of Hebei Medical University, West 215, Heping Road, Shijiazhuang, Hebei 050000, China.
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Ke J, Li J, Chen J, Lai C, Zheng W, Fu X, Fang X, Guo L, Shi Z. A Non-Linear Role of Hyperlipidemia on Progression of Intracranial Atherosclerotic Plaques and Acute Downstream Ischemic Events. J Atheroscler Thromb 2023; 30:1448-1460. [PMID: 36709996 PMCID: PMC10564665 DOI: 10.5551/jat.63971] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 12/13/2022] [Indexed: 01/28/2023] Open
Abstract
AIM Intracranial atherosclerotic stenosis (ICAS) is the leading cause of ischemic stroke worldwide. Hyperlipidemia is a major contributor to atherosclerosis. However, the effect of hyperlipidemia on the evolution of intracranial atherosclerotic plaques and downstream ischemic episodes remains unclear. In this study, we aimed to assess the radiological features of ICAS plaques and to explore the relationship between hyperlipidemia and plaque progression. METHODS We included people with ICAS (≥50% stenosis) undergoing high-resolution magnetic resonance imaging. The culprit plaque was defined as the sole, or in case of multiple stenosis, the narrowest plaque on the intracranial artery responsible for acute ischemic stroke. Demographic, clinical data, plaque features on MRI, and lipid parameters were compared between culprit and non-culprit plaques. Plaque enhancement was graded as Grade 0, 1 and 2 by comparing to the adjacent normal vessel wall and pituitary funnel after contrast enhancement on T1-weighted sequences. RESULTS 162 patients were included (mean age 57.7±12.1 years, male 61.6%), 110 of whom were identified as culprit plaque with an ipsilateral acute stroke. High-grade enhancement was the most prominent MRI feature of the culpable plaque (Grade-2: OR 6.539, 95%CI 1.706-23.707, p=0.006). LDL cholesterol was significantly associated with overall acute ischemic stroke caused by culprit plaque. After stratification by enhancement grading LDL was independently associated with ischemic events in Grade-1 enhancement plaques (OR 6.778, 95%CI 2.122-21.649, p=0.001). In patients with Grade-2 enhancement plaques, however, LDL was not associated with ischemic event; in contrast, Neutrophil/Lymphocyte ratio was independently associated with ischemic events caused by Grade-2 enhancement plaques (OR 2.188, 95%CI 1.209-3.961, p=0.010). CONCLUSIONS LDL was related with ischemia events in intermediate stage of intracranial atherosclerotic plaque progression, an excellent period for intensive lipid-lowering treatment. In advanced stage, inflammatory agents maybe the main contributor to ischemic events.
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Affiliation(s)
- Jianxia Ke
- Department of Neurology and Stroke Center, Affiliate Dongguan People’s Hospital, Southern Medical University, Dongguan, China
| | - Jinrui Li
- Department of Neurology and Stroke Center, Affiliate Dongguan People’s Hospital, Southern Medical University, Dongguan, China
| | - Junting Chen
- Department of Neurology and Stroke Center, Affiliate Dongguan People’s Hospital, Southern Medical University, Dongguan, China
| | - Chengze Lai
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Weicheng Zheng
- Department of Neurology and Stroke Center, Affiliate Dongguan People’s Hospital, Southern Medical University, Dongguan, China
| | - Xiaoli Fu
- Department of Neurology and Stroke Center, Affiliate Dongguan People’s Hospital, Southern Medical University, Dongguan, China
| | - Xuewen Fang
- Department of Radiology, Affiliate Dongguan People’s Hospital, Southern Medical University, Dongguan, China
| | - Lianxian Guo
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Zhu Shi
- Department of Neurology and Stroke Center, Affiliate Dongguan People’s Hospital, Southern Medical University, Dongguan, China
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Sun J, Sui Y, Chen Y, Lian J, Wang W. Predicting acute ischemic stroke using the revised Framingham stroke risk profile and multimodal magnetic resonance imaging. Front Neurol 2023; 14:1264791. [PMID: 37840926 PMCID: PMC10568328 DOI: 10.3389/fneur.2023.1264791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 09/06/2023] [Indexed: 10/17/2023] Open
Abstract
Background and purpose Patients with transient ischemic attacks (TIA) have a significant risk of developing acute ischemic strokes (AIS), emphasizing the critical need for hierarchical management. This study aims to develop a clinical-imaging model utilizing multimodal magnetic resonance imaging (mMRI) and the revised Framingham Stroke Risk Profile (FSRP) to predict AIS and achieve early secondary prevention. Methods mMRI scans were conducted on patients with symptomatic intracranial atherosclerotic disease (ICAD) to assess vascular wall features and cerebral perfusion parameters. Based on diffusion-weighted imaging (DWI), patients were divided into two groups: TIA and AIS. Clinical data were evaluated to calculate the FSRP score. Differences in clinical and imaging characteristics between the groups were analyzed, and a predictive model for AIS probability in patients with ICAD was established. Results A total of 112 TIA and AIS patients were included in the study. The results showed that the AIS group had higher proportions of FSRP-high risk, hyperhomocysteinemia, and higher value of low-density lipoprotein (LDL), standardized plaque index (SQI), and enhancement rate (ER) compared to the TIA group (p < 0.05). Mean transit time (MTT) and time to peak (TTP) in the lesion area were significantly longer in the AIS group (p < 0.05). Multivariate analysis identified FSRP-high risk (p = 0.027) and high ER (p = 0.046) as independent risk factors for AIS. The combined clinical and mMRI model produced an area under the curve (AUC) of 0.791 in receiver operating characteristic (ROC) analysis. The constructed nomogram model combining clinical and mMRI features demonstrated favorable clinical net benefits. Conclusion FSRP-high risk and high ER were confirmed as independent risk factors for AIS. The combined prediction model utilizing clinical and imaging markers effectively predicts stroke risk in symptomatic ICAD patients.
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Affiliation(s)
- Jiali Sun
- Department of MRI Room, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Ying Sui
- Department of MRI Room, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yue Chen
- Department of MRI Room, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jianxiu Lian
- Department of Advisory Clinical Scientist C&TS North, Philips Healthcare, Beijing, China
| | - Wei Wang
- Department of MRI Room, First Affiliated Hospital of Harbin Medical University, Harbin, China
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Huang L, Wu X, Liu Y, Guo X, Ye J, Cai W, Wang S, Luo B. Qualitative and quantitative plaque enhancement on high-resolution vessel wall imaging predicts symptomatic intracranial atherosclerotic stenosis. Brain Behav 2023; 13:e3032. [PMID: 37128149 PMCID: PMC10275550 DOI: 10.1002/brb3.3032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 03/28/2023] [Accepted: 04/17/2023] [Indexed: 05/03/2023] Open
Abstract
BACKGROUND AND PURPOSE Intracranial atherosclerotic stenosis (ICAS) is a major cause of ischemic stroke (IS), and high-resolution vessel wall imaging (HR-VWI) can be used to assess the plaque characteristics of ICAS. This study aimed to qualitatively and quantitatively assess plaque enhancement of ICAS and to investigate the relationship between plaque enhancement, plaque morphological features, and IS. METHODS Data from adult patients with ICAS from April 2018 to July 2022 were retrospectively collected, and all patients underwent HR-VWI examination. Plaque enhancement was qualitatively and quantitatively assessed, and the plaque-to-pituitary stalk contrast ratio (CR) indicated the degree of plaque enhancement. Plaque characteristics, such as plaque burden and area, were quantitatively measured using HR-VWI. Furthermore, receiver-operating characteristic (ROC) analysis was performed to assess the ability of CR to discriminate plaque enhancement. The patients were divided into a symptomatic ICAS group and an asymptomatic ICAS group according to the clinical and imaging characteristics. Univariate and multivariate analyses were performed to investigate which factors were significantly associated with plaque enhancement and symptomatic ICAS. The plaque burden and CR were compared using linear regression. RESULTS A total of 91 patients with ICAS were enrolled in this study. ICAS plaque burden was significantly associated with plaque enhancement (p = .037), and plaque burden was linearly positively correlated with CR (R = 0.357, p = .001). ROC analysis showed that the cutoff value of CR for plaque enhancement was 0.56 (specificity of 81.8%). Both plaque enhancement and plaque burden were significantly associated with symptomatic ICAS, and only plaque enhancement was an independent risk factor after multivariate analysis. CONCLUSION Plaque burden was an independent risk factor for plaque enhancement and showed a linear positive correlation with CR. The cutoff value of CR for plaque enhancement was 0.56, and CR ≥ 0.56 was significantly associated with symptomatic ICAS, which was independently associated with plaque enhancement.
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Affiliation(s)
- Li‐Xin Huang
- Department of Neurosurgery, Sun Yat‐sen Memorial HospitalSun Yat‐sen UniversityGuangzhouChina
- Department of Neurosurgery, The Eighth Affiliated HospitalSun Yat‐Sen UniversityShenzhenChina
| | - Xiao‐Bing Wu
- Department of Neurosurgery, Sun Yat‐sen Memorial HospitalSun Yat‐sen UniversityGuangzhouChina
| | - Yi‐Ao Liu
- Department of Neurosurgery, Sun Yat‐sen Memorial HospitalSun Yat‐sen UniversityGuangzhouChina
- Department of Neurosurgery, The Eighth Affiliated HospitalSun Yat‐Sen UniversityShenzhenChina
| | - Xin Guo
- Department of Neurosurgery, Sun Yat‐sen Memorial HospitalSun Yat‐sen UniversityGuangzhouChina
- Department of Neurosurgery, The Eighth Affiliated HospitalSun Yat‐Sen UniversityShenzhenChina
| | - Jie‐Shun Ye
- School of Civil Engineering and TransportationSouth China University of TechnologyGuangzhouChina
| | - Wang‐Qing Cai
- Department of Neurosurgery, Sun Yat‐sen Memorial HospitalSun Yat‐sen UniversityGuangzhouChina
| | - Sheng‐Wen Wang
- Department of Neurosurgery, Sun Yat‐sen Memorial HospitalSun Yat‐sen UniversityGuangzhouChina
| | - Bin‐ Luo
- Department of Neurosurgery, The Eighth Affiliated HospitalSun Yat‐Sen UniversityShenzhenChina
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Li Y, Feng Q, Wang C, Zhang X, Wan L, Han T. Exploration of the etiology of single small subcortical infarctions using high-resolution vessel wall MRI. Front Neurol 2023; 14:1179730. [PMID: 37360343 PMCID: PMC10289301 DOI: 10.3389/fneur.2023.1179730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 05/09/2023] [Indexed: 06/28/2023] Open
Abstract
Objective We aimed to explore imaging indicators for diagnosing the etiology of single small subcortical infarctions (SSI) using high-resolution vessel wall imaging (HR-VWI). Methods Patients with acute isolated subcortical cerebral infarction were prospectively enrolled and classified as having large artery atherosclerosis (LAA), stroke of undetermined etiology (SUD), or small artery disease (SAD). The infarct information, the cerebral small vessel disease (CSVD) score, morphological characteristics of the lenticulostriate arteries (LSAs), and plaque characteristics were compared between the three groups. Results Seventy seven patients were enrolled (30 LAA, 28 SUD, and 19 SAD). The total CSVD score of the LAA (P = 0.001) and SUD groups (P = 0.017) was significantly lower than that of the SAD group. The number and total length of LSA branches in the LAA and SUD groups were shorter than in the SAD group. Moreover, the total length laterality index (LI) of the LSAs in the LAA and SUD groups was greater than in the SAD group. The total CSVD score and LI of total length were independent predictors for the SUD and LAA groups. The remodeling index of the SUD group was significantly higher than that of the LAA group (P = 0.002); positive remodeling was dominant in the SUD group (60.7%), whereas remodeling in the LAA group was primarily non-positive (83.3%). Conclusions SSI with and without plaques on the carrier artery may have different modes of pathogenesis. Patients with plaques may also have a coexisting mechanism of atherosclerosis.
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Affiliation(s)
- Yutian Li
- Department of Radiology, Tianjin Huanhu Hospital, Tianjin University, Tianjin, China
- Department of Radiology, Qingdao Women and Children's Hospital, Qingdao, Shandong, China
| | - Quanzhi Feng
- Department of Radiology, Tianjin Huanhu Hospital, Tianjin University, Tianjin, China
| | - Congcong Wang
- Department of Nuclear Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | | | - Liang Wan
- Medical College, Tianjin University, Tianjin, China
| | - Tong Han
- Department of Radiology, Tianjin Huanhu Hospital, Tianjin University, Tianjin, China
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin, China
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Assessment of the degree of arterial stenosis in intracranial atherosclerosis using 3D high-resolution MRI: comparison with time-of-flight MRA, contrast-enhanced MRA, and DSA. Clin Radiol 2023; 78:e63-e70. [PMID: 36307233 DOI: 10.1016/j.crad.2022.08.132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 08/03/2022] [Accepted: 08/16/2022] [Indexed: 01/18/2023]
Abstract
AIM To compare the accuracy of three-dimensional (3D) high-resolution (HR) magnetic resonance imaging (MRI), time-of-flight magnetic resonance angiography (TOF-MRA), contrast-enhanced magnetic resonance angiography (CE-MRA), and digital subtraction angiography (DSA) in measuring the degree of stenosis in intracranial atherosclerosis. MATERIALS AND METHODS All patients with intracranial artery ischaemic events underwent HR-MRI, TOF-MRA, and CE-MRA analysis, and some of these patients underwent DSA examination. The correlation between different methods for measuring the degree of lumen stenosis was analysed. The accuracy of HR-MRI, TOF-MRA, and CE-MRA was evaluated and compared with that of DSA. RESULTS A total of 189 arterial stenoses were identified in 93 patients. Of these, 72 patients with 142 arterial stenoses underwent DSA examination. A very strong correlation between HR-MRI and CE-MRA measurements was shown (r=0.839, p<0.0001). The correlation between HR-MRI and TOF-MRA measurements was strong (r=0.720, p<0.0001). A very strong correlation between HR-MRI and DSA measurements was found (r=0.864, p<0.0001), and a similar correlation was observed between CE-MRA, and DSA measurements (r=0.843, p<0.0001). The correlation between TOF-MRA and DSA measurements was strong (r=0.686, p<0.0001). There was substantial agreement between HR-MRI and DSA measurements (K = 0.772) and between CE-MRA, and DSA measurements (K = 0.734) that was slightly higher than the agreement between TOF-MRA and DSA measurements (K = 0.636). CONCLUSION HR-MRI can accurately measure stenosis (especially for moderate and severe stenosis) in intracranial atherosclerosis by direct visualisation of the vessel lumen and steno-occlusive plaque.
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Sun J, Feng XR, Yang X, Feng PY, Liu YB, Yang HX, Zhang TZ. Correlation between characteristics of intracranial atherosclerotic plaques and ischemic stroke in high-resolution vascular wall MRI. Acta Radiol 2023; 64:732-740. [PMID: 35345899 DOI: 10.1177/02841851221088917] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Intracranial atherosclerotic stenosis is a major cause of ischemic stroke, accounting for 30% of ischemic strokes in Asian populations. PURPOSE To investigate the relationship between the degree of arterial stenosis and enhancement grade of intracranial atherosclerotic disease (ICAD), the plaque characteristics in different remodeling patterns, and its potential impact. MATERIAL AND METHODS A total of 210 patients diagnosed with ICAD were enrolled in this retrospective study. Patients were divided into the middle cerebral artery (MCA) group (101 cases), posterior cerebral artery (PCA) group (14 cases), basilar artery (BA) group (71 cases), and intracranial segment of vertebral artery (VA) group (90 cases) according to the difference of diseased vessels. Data on presence or absence of ischemic infarction, intracranial vascular position of lesions, plaque characteristics, ICAD enhancement grade, remodeling index, and degree of arterial stenosis were collected for analysis. RESULTS The incidence of ischemic infarction in enhancement grade 2 was significantly higher than that in enhancement grade 1 in MCA group (P = 0.019). Enhancement grade 2 of ICAD was an independent risk factor for the development of ischemic infarction (odds ratio = 4.60; 95% confidence interval: 1.91-11.03; P = 0.001). There was no significant statistical difference in infarct rate between different remodeling modalities (P>0.05). CONCLUSION Enhancement grade of ICAD is significantly associated with the degree of stenosis and the occurrence of ischemic stroke, which varies in different intracranial vessels. The pattern of vascular remodeling varies among different intracranial vessels, and the pattern of vascular remodeling has a significant impact on plaque characteristics.
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Affiliation(s)
- Jie Sun
- Department of Medical Imaging, The Second Hospital of Hebei Medical University, Shijiazhuang, PR China
| | - Xu-Ran Feng
- Department of Medical Imaging, The Second Hospital of Hebei Medical University, Shijiazhuang, PR China
| | - Xuan Yang
- Department of Medical Imaging, The Second Hospital of Hebei Medical University, Shijiazhuang, PR China
| | - Ping-Yong Feng
- Department of Medical Imaging, The Second Hospital of Hebei Medical University, Shijiazhuang, PR China
| | - Yu-Bo Liu
- Department of Medical Imaging, The Second Hospital of Hebei Medical University, Shijiazhuang, PR China
| | - Hai-Xiao Yang
- Department of Medical Imaging, The Second Hospital of Hebei Medical University, Shijiazhuang, PR China
| | - Tian-Zi Zhang
- Department of Medical Imaging, The Second Hospital of Hebei Medical University, Shijiazhuang, PR China
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Han N, Ma Y, Li Y, Zheng Y, Wu C, Gan T, Li M, Ma L, Zhang J. Imaging and Hemodynamic Characteristics of Vulnerable Carotid Plaques and Artificial Intelligence Applications in Plaque Classification and Segmentation. Brain Sci 2023; 13:brainsci13010143. [PMID: 36672124 PMCID: PMC9856903 DOI: 10.3390/brainsci13010143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 12/24/2022] [Accepted: 01/10/2023] [Indexed: 01/18/2023] Open
Abstract
Stroke is a massive public health problem. The rupture of vulnerable carotid atherosclerotic plaques is the most common cause of acute ischemic stroke (AIS) across the world. Currently, vessel wall high-resolution magnetic resonance imaging (VW-HRMRI) is the most appropriate and cost-effective imaging technique to characterize carotid plaque vulnerability and plays an important role in promoting early diagnosis and guiding aggressive clinical therapy to reduce the risk of plaque rupture and AIS. In recent years, great progress has been made in imaging research on vulnerable carotid plaques. This review summarizes developments in the imaging and hemodynamic characteristics of vulnerable carotid plaques on the basis of VW-HRMRI and four-dimensional (4D) flow MRI, and it discusses the relationship between these characteristics and ischemic stroke. In addition, the applications of artificial intelligence in plaque classification and segmentation are reviewed.
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Affiliation(s)
- Na Han
- Department of Magnetic Resonance, Lanzhou University Second Hospital, Lanzhou 730030, China
- Gansu Province Clinical Research Center for Functional and Molecular Imaging, Lanzhou 730030, China
- Second Clinical School, Lanzhou University, Lanzhou 730030, China
| | - Yurong Ma
- Department of Magnetic Resonance, Lanzhou University Second Hospital, Lanzhou 730030, China
- Gansu Province Clinical Research Center for Functional and Molecular Imaging, Lanzhou 730030, China
| | - Yan Li
- School of Mathematics and Statistics, Lanzhou University, Lanzhou 730030, China
| | - Yu Zheng
- Department of Magnetic Resonance, Lanzhou University Second Hospital, Lanzhou 730030, China
- Gansu Province Clinical Research Center for Functional and Molecular Imaging, Lanzhou 730030, China
- Second Clinical School, Lanzhou University, Lanzhou 730030, China
| | - Chuang Wu
- Department of Magnetic Resonance, Lanzhou University Second Hospital, Lanzhou 730030, China
- Gansu Province Clinical Research Center for Functional and Molecular Imaging, Lanzhou 730030, China
| | - Tiejun Gan
- Department of Magnetic Resonance, Lanzhou University Second Hospital, Lanzhou 730030, China
- Gansu Province Clinical Research Center for Functional and Molecular Imaging, Lanzhou 730030, China
| | - Min Li
- Department of Magnetic Resonance, Lanzhou University Second Hospital, Lanzhou 730030, China
- Gansu Province Clinical Research Center for Functional and Molecular Imaging, Lanzhou 730030, China
| | - Laiyang Ma
- Department of Magnetic Resonance, Lanzhou University Second Hospital, Lanzhou 730030, China
- Gansu Province Clinical Research Center for Functional and Molecular Imaging, Lanzhou 730030, China
- Second Clinical School, Lanzhou University, Lanzhou 730030, China
| | - Jing Zhang
- Department of Magnetic Resonance, Lanzhou University Second Hospital, Lanzhou 730030, China
- Gansu Province Clinical Research Center for Functional and Molecular Imaging, Lanzhou 730030, China
- Correspondence: ; Tel.: +86-139-1999-2479
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Woo HG, Kim HG, Lee KM, Ha SH, Jo H, Heo SH, Chang DI, Liebeskind DS, Kim BJ. Wall Shear Stress Associated with Stroke Occurrence and Mechanisms in Middle Cerebral Artery Atherosclerosis. J Stroke 2023; 25:132-140. [PMID: 36746383 PMCID: PMC9911838 DOI: 10.5853/jos.2022.02754] [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: 08/26/2022] [Accepted: 12/08/2022] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND AND PURPOSE Various mechanisms are involved in the etiology of stroke caused by atherosclerosis of the middle cerebral artery (MCA). Here, we compared differences in plaque nature and hemodynamic parameters according to stroke mechanism in patients with MCA atherosclerosis. METHODS Consecutive patients with asymptomatic and symptomatic MCA atherosclerosis (≥50% stenosis) were enrolled. MCA plaque characteristics (location and plaque enhancement) and wall shear stress (WSS) were measured using high-resolution vessel wall and four-dimensional flow magnetic resonance imaging, respectively, at five points (initial, upstream, minimal lumen, downstream, and terminal). These parameters were compared between patients with asymptomatic and symptomatic MCA atherosclerosis with infarctions of different mechanisms (artery-to-artery embolism vs. local branch occlusion). RESULTS In total, 110 patients (46 asymptomatic, 32 artery-to-artery embolisms, and 32 local branch occlusions) were investigated. Plaques were evenly distributed in the MCA of patients with asymptomatic MCA atherosclerosis, more commonly observed in the distal MCA of patients with artery-to-artery embolism, and in the middle MCA of patients with local branch occlusion. Maximum WSS and plaque enhancement were more prominent in the minimum lumen area of patients with asymptomatic MCA atherosclerosis or those with local branch occlusion, and were more prominent in the upstream area in those with artery-to-artery embolism. The elevated variability in the maximum WSS was related to stroke caused by artery-to-artery embolism. CONCLUSION Stroke caused by artery-to-artery embolism was related to plaque enhancement and the highest maximum WSS at the upstream point of the plaque, and was associated with elevated variability of maximum WSS.
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Affiliation(s)
- Ho Geol Woo
- Department of Neurology, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, Korea
| | - Hyug-Gi Kim
- Department of Radiology, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, Korea
| | - Kyung Mi Lee
- Department of Radiology, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, Korea
| | - Sang Hee Ha
- Department of Neurology, Asan Medical Center, Seoul, Korea
| | - HangJin Jo
- Department of Mechanical Engineering & Division of Advanced Nuclear Engineering, POSTECH, Pohang, Korea
| | - Sung Hyuk Heo
- Department of Neurology, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, Korea
| | - Dae-il Chang
- Department of Neurology, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, Korea
| | - David S. Liebeskind
- Department of Neurology, University of California in Los Angeles, Los Angeles, CA, USA
| | - Bum Joon Kim
- Department of Neurology, Asan Medical Center, Seoul, Korea,Correspondence: Bum Joon Kim Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea Tel: +82-2-958-8499 E-mail:
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Zhang D, Wang M, Wu L, Zhao Y, Wang S, Yin X, Wu X. Assessing the characteristics and diagnostic value of plaques for patients with acute stroke using high-resolution magnetic resonance imaging. Quant Imaging Med Surg 2022; 12:1529-1538. [PMID: 35111645 DOI: 10.21037/qims-21-531] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 10/19/2021] [Indexed: 11/06/2022]
Abstract
BACKGROUND A comprehensive understanding of atherosclerotic plaques aids physicians in evaluation and treatment of stroke. This study set out to evaluate the characteristics and diagnostic value of atherosclerotic plaques in patients with acute stroke and stenotic middle cerebral artery (MCA) using high-resolution magnetic resonance imaging. METHODS Sixty-five consecutive patients with transient ischemic attack or recent ischemic stroke were prospectively recruited. All enrolled patients underwent routine magnetic resonance scans and cross-sectional scans of the stenotic MCA vascular wall. Differences in vascular wall parameters and location, the enhancement degree, and remodelling patterns of plaques in the stenotic MCA were compared between symptomatic (n=30) and asymptomatic (n=35) groups of patients. The statistically significant indicators were then subjected to logistic regression analysis to identify which factors could better predict acute stroke. RESULTS Compared with the asymptomatic group, the symptomatic group had a smaller lumen area (LA) (P=0.027), larger plaque area (P<0.001), larger remodelling index (P<0.001), more superior/posterior plaques (P=0.001), more obviously enhanced plaques (P<0.001), and a greater number of PR patterns (P<0.001) in the stenotic MCA. Logistic regression analysis showed that the plaque area, remodelling patterns, LA in the stenotic MCA, enhancement degree, and plaque location were predictors of acute stroke. The combination of the plaque area and LA in the stenotic MCA, and the plaque enhancement degree had optimal predictive value (area under the curve =0.927). CONCLUSIONS A larger plaque area and smaller LA in the stenotic MCA, and obvious plaque enhancement might indicate that a patient is prone to acute stroke.
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Affiliation(s)
- Danfeng Zhang
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Mi Wang
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Lili Wu
- Kangda College of Nanjing Medical University, Lianyungang, China
| | - Ying Zhao
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Siyu Wang
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Xindao Yin
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Xinying Wu
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
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Lu Y, Ye MF, Zhao JJ, Diao SS, Li T, Ding DX, Zhang LL, Yao FR, Kong Y, Xu Z. Gadolinium enhancement of atherosclerotic plaque in the intracranial artery. Neurol Res 2021; 43:1040-1049. [PMID: 34229565 DOI: 10.1080/01616412.2021.1949682] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Background: Gadolinium enhancement on high resolution magnetic resonance imaging (HR-MRI) has been considered a sign of instability and inflammation of intracranial atherosclerotic plaques. Our research objective was to explore the relationship between the extent of plaque enhancement (PE), the degree of intracranial artery stenosis, and acute ischemic stroke events.Methods: HR-MRI was performed in 91 patients with intracranial vascular stenosis to determine the existence and intensity of PE.Results: Among 91 patients enrolled in the trial, there were 43 patients in the acute/subacute group (≤1 month from ischemic stroke event), 15 patients in the chronic group (>1 month from ischemic stroke event), and 33 patients in the non-culprit plaques group (no ischemic stroke event). A total of 105 intracranial atherosclerotic plaques were detected in 91 patients. 14 (13.3%) were mild-stenosis plaques, 22 (21.0%) were moderate-stenosis plaques, and 69 (65.7%) were severe-stenosis plaques. There were 12 (11.4%), 18 (17.1%), and 75 (71.4%) plaques in the non-enhanced plaque group, the mild-enhancement group, and the significant-enhancement group, respectively. The degree of PE among the acute/subacute group, the chronic group, and the non-culprit plaque group had a significant difference (P = 0.005). Enhanced plaques were more often observed in culprit plaques (acute/subacute group and chronic group) than non-culprit plaques (96.7% vs 77.3%). Non-enhanced plaques were more often observed in non-culprit plaques than culprit plaques (acute/subacute group and chronic group) (22.7% vs 3.3%). And 36.6% of the enhanced plaques were non-culprit plaques. After performing univariate and multivariate logistic regression analysis, the results showed that strong plaque enhancement (P = 0.025, odds ratio [OR] 3.700, 95% confidence interval [95% CI] 1.182-11.583) and severe stenosis (P = 0.008, OR 4.393, 95%CI 1.481-13.030) were significantly associated with acute ischemic events.Conclusion: Enhanced plaques were more often observed in culprit plaques, and non-enhanced plaques were more often observed in non-culprit plaques. Moreover, significant plaque enhancement and severe ICAS were closely associated with acute ischemic events.
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Affiliation(s)
- Yue Lu
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Meng-Fan Ye
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Jie-Ji Zhao
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Shan-Shan Diao
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Tan Li
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Dong-Xue Ding
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Lu-Lu Zhang
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Fei-Rong Yao
- Department of Radiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Yan Kong
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Zhuan Xu
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
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Zhang D, Wu X, Tang J, Wang P, Chen GZ, Yin X. Hemodynamics is associated with vessel wall remodeling in patients with middle cerebral artery stenosis. Eur Radiol 2021; 31:5234-5242. [PMID: 33439317 DOI: 10.1007/s00330-020-07607-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 02/26/2020] [Accepted: 12/04/2020] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To evaluate the relationship between hemodynamics and vessel wall remodeling patterns in middle cerebral artery (MCA) stenosis based on high-resolution magnetic resonance imaging and computational fluid dynamics (CFD). METHODS Forty consecutive patients with recent ischemic stroke or transient ischemic attack attributed to unilateral atherosclerotic MCA stenosis (50-99%) were prospectively recruited. All patients underwent a cross-sectional scan of the stenotic MCA vessel wall. The parameters of the vessel wall, the number of patients with acute infarction, translesional wall shear stress ratio (WSSR), wall shear stress in stenosis (WSSs), and translesional pressure ratio were obtained. The patients were divided into positive remodeling (PR) and negative remodeling (NR) groups. The differences in vessel wall parameters and hemodynamics were compared. Correlations between the parameters of the vessel wall and hemodynamics were calculated. RESULTS Of the 40 patients, 16 had PR, 19 had NR, and the other 5 displayed non-remodeling. The PR group had a smaller lumen area (p = 0.004), larger plaque area (p < 0.001), normal wall index (p = 0.004), and higher WSSR (p = 0.004) and WSSs (p = 0.023) at the most narrowed site. The PR group had more enhanced plaques (12 vs 6, p = 0.03). The number of patients with acute stroke in the PR group was more than that in the NR group (11 vs 4, p = 0.01). The remodeling index (r = 0.376, p = 0.026) and plaque area (r = 0.407, p = 0.015) showed a positive correlation with WSSR, respectively. CONCLUSIONS Hemodynamics plays a role in atherosclerotic plaques and vessel wall remodeling. Individuals with greater hemodynamic values might be more prone to stroke. KEY POINTS • Stenotic plaques in middle cerebral artery with positive remodeling have smaller lumen area and larger resp. higher plaque area, normal wall index, translesional wall shear stress ratio, and wall shear stress than negative remodeling. • The remodeling index and plaque area are positively correlated with translesional wall shear stress ratio. • Hemodynamic may help to understand the role of positive remodeling in the development of acute stroke.
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Affiliation(s)
- Danfeng Zhang
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, Jiangsu, China
| | - Xinying Wu
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, Jiangsu, China
| | - Jie Tang
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, Jiangsu, China
| | - Peng Wang
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, Jiangsu, China
| | - Guo Zhong Chen
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, Jiangsu, China.
| | - Xindao Yin
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, Jiangsu, China.
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Zhang X, Chen L, Li S, Shi Z, Tian X, Peng W, Chen S, Zhan Q, Liu Q, Lu J. Enhancement Characteristics of Middle Cerebral Arterial Atherosclerotic Plaques Over Time and Their Correlation With Stroke Recurrence. J Magn Reson Imaging 2020; 53:953-962. [PMID: 33034113 DOI: 10.1002/jmri.27351] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/13/2020] [Accepted: 08/14/2020] [Indexed: 11/06/2022] Open
Affiliation(s)
- Xuefeng Zhang
- Department of Radiology Changhai Hospital, Second Military Medical University Shanghai China
| | - Luguang Chen
- Department of Radiology Changhai Hospital, Second Military Medical University Shanghai China
| | - Shuai Li
- Department of Radiology Changhai Hospital, Second Military Medical University Shanghai China
| | - Zhang Shi
- Department of Radiology Changhai Hospital, Second Military Medical University Shanghai China
| | - Xia Tian
- Department of Radiology Changhai Hospital, Second Military Medical University Shanghai China
| | - Wenjia Peng
- Department of Radiology Changhai Hospital, Second Military Medical University Shanghai China
| | - Shiyue Chen
- Department of Radiology Changhai Hospital, Second Military Medical University Shanghai China
| | - Qian Zhan
- Department of Radiology Changhai Hospital, Second Military Medical University Shanghai China
| | - Qi Liu
- Department of Radiology Changhai Hospital, Second Military Medical University Shanghai China
| | - Jianping Lu
- Department of Radiology Changhai Hospital, Second Military Medical University Shanghai China
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Wei H, Tan T, Cheng L, Liu J, Song H, Li L, Zhang K. MRI tracing of ultrasmall superparamagnetic iron oxide nanoparticle‑labeled endothelial progenitor cells for repairing atherosclerotic vessels in rabbits. Mol Med Rep 2020; 22:3327-3337. [PMID: 32945451 PMCID: PMC7453557 DOI: 10.3892/mmr.2020.11431] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 03/30/2020] [Indexed: 12/14/2022] Open
Abstract
Endothelial progenitor cells (EPCs) have been discovered to be relevant to the prognosis of cardiovascular diseases. Previous research has demonstrated that EPCs serve vital roles in the occurrence and development of atherosclerosis. Significant improvements have been made in MRI technology and in the experimental use of EPCs for therapeutic angiogenesis and vascular repair. Nevertheless, the migratory, adhesive, proliferative and angiogenic properties of EPCs remain unknown. The aims of the present study were to investigate the potential of using non-invasive monitoring with ultrasmall superparamagnetic iron oxide nanoparticle (USPION)-labeled endothelial progenitor cells (EPCs) after transplantation, and to assess the treatment outcomes in an atherosclerotic rabbit model. EPCs derived from rabbit peripheral blood samples were labeled with USPION-poly-l-lysine (USPION-PLL). The morphology, proliferation, adhesive ability and labeling efficiency of the EPCs were determined by optical and electron microscopy. Moreover, biological activity was assessed by flow cytometry. In addition, T2-weighted image fast spin-echo MRI was used to detect cell labeling. USPION content in the labeled EPCs was determined by Prussian blue staining and scanning electron microscopy. Rabbit atherosclerosis model was established using a high-fat diet. USPION-labeled EPCs were transplanted into rabbits, and in vivo MRI was performed 1 and 7 days after transplantation. It was found that EPCs cultured on Matrigel formed capillary-like structures, and expressed the surface markers CD133, CD31, CD34 and vascular endothelial growth factor receptor 2 (VEGFR2). The optimal USPION concentration was 32 µg/ml, as determined by adhesion and proliferation assays. It was identified that USPION-PLL nanoparticles were 10–20 nm in diameter. Histopathological analysis results indicated that 1 day after transplantation of the labeled EPCs, blue-stained granules were observed in the intima of vascular lesions in rabbit models after Prussian blue staining. Therefore, the present results suggest that USPION-labeled EPCs may play a role in repairing endothelial injury and preventing atherosclerosis in vivo.
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Affiliation(s)
- Hongxia Wei
- Department of Laboratory Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing Drum Tower Hospital, Nanjing, Jiangsu 210008, P.R. China
| | - Tingting Tan
- Department of Laboratory Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing Drum Tower Hospital, Nanjing, Jiangsu 210008, P.R. China
| | - Li Cheng
- Department of Laboratory Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing Drum Tower Hospital, Nanjing, Jiangsu 210008, P.R. China
| | - Jiapeng Liu
- Department of Medical Imaging, Shanghai Jiahui International Hospital, Shanghai 200233, P.R. China
| | - Hongyan Song
- Department of Laboratory Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing Drum Tower Hospital, Nanjing, Jiangsu 210008, P.R. China
| | - Lei Li
- Department of Laboratory Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing Drum Tower Hospital, Nanjing, Jiangsu 210008, P.R. China
| | - Kui Zhang
- Department of Laboratory Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing Drum Tower Hospital, Nanjing, Jiangsu 210008, P.R. China
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Tian X, Tian B, Shi Z, Wu X, Peng W, Zhang X, Malhotra A, Mossa-Basha M, Sekhar L, Liu Q, Lu J, Hu C, Zhu C. Assessment of Intracranial Atherosclerotic Plaques Using 3D Black-Blood MRI: Comparison With 3D Time-of-Flight MRA and DSA. J Magn Reson Imaging 2020; 53:469-478. [PMID: 32864816 DOI: 10.1002/jmri.27341] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/06/2020] [Accepted: 08/06/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Noninvasive assessment of intracranial stenosis is important to manage ischemic stroke patients. However, few previous studies have compared 3D black-blood MRI with 3D time-of-flight (TOF), magnetic resonance angiography (MRA), and digital subtraction angiography (DSA) for intracranial artery plaque assessment. PURPOSE To compare 3D black-blood MRI and 3D TOF-MRA, using DSA as the reference standard for intracranial stenosis and atherosclerotic plaque assessment in patients with posterior circulation stroke or transient ischemic attacks (TIAs). STUDY TYPE Prospective, cohort study. POPULATION One hundred and one patients with posterior circulation stroke and/or TIA (age 63 ± 10 years, 84 male) who underwent DSA and MRI within 4 weeks of each other. FIELD STRENGTH/SEQUENCE 3D fast-spin-echo MRI for intracranial vessel wall imaging (IVWI) and 3D TOF at 3T. ASSESSMENT Two radiologists independently measured the degree of stenosis on 3D IVWI and TOF, using DSA as a reference. Plaque enhancement was recorded when the plaque was stenosis-free on DSA. STATISTICAL TESTS Shapiro-Wilk's test, Student's t-test, Mann-Whitney U-test, Spearman correlation, Bland-Altman analysis, and interclass correlation coefficient (ICC). RESULTS A total of 238 intracranial plaques (203 posterior, 35 anterior) were included. 3D IVWI showed better agreement with DSA in measuring stenosis than TOF (ICC = 0.89 vs. 0.64). 3D IVWI had higher sensitivity and specificity for detecting stenosis >50% and stenosis >75% than TOF, using DSA as the standard. TOF significantly overestimated the degree of stenosis compared to DSA (65 ± 19% vs. 51 ± 15%, P < 0.001). DSA did not observe 62 nonstenotic plaques (26.1%) that were shown only on 3D IVWI, in which 36 plaques (58.1%) showed contrast enhancement. The interreader agreement for measuring stenosis were excellent, with ICCs >0.90 for all three modalities. DATA CONCLUSION 3D black-blood MRI is accurate and reproducible for quantifying intracranial artery stenosis compared with DSA, and performs better than 3D TOF. As compared to DSA, it detects more nonstenotic plaques. Level of Evidence 1 Technical Efficacy Stage 2 J. MAGN. RESON. IMAGING 2021;53:469-478.
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Affiliation(s)
- Xia Tian
- Department of Radiology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Department of Radiology, Changhai Hospital, Shanghai, China
| | - Bing Tian
- Department of Radiology, Changhai Hospital, Shanghai, China
| | - Zhang Shi
- Department of Radiology, Changhai Hospital, Shanghai, China
| | - Xiao Wu
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA
| | - Wenjia Peng
- Department of Radiology, Changhai Hospital, Shanghai, China
| | - Xuefeng Zhang
- Department of Radiology, Changhai Hospital, Shanghai, China
| | - Ajay Malhotra
- Department of Radiology, Yale University, New Haven, Connecticut, USA
| | - Mahmud Mossa-Basha
- Department of Radiology, University of Washington, Seattle, Washington, USA
| | - Laligam Sekhar
- Department of Neurological Surgery, University of Washington, Seattle, Washington, USA
| | - Qi Liu
- Department of Radiology, Changhai Hospital, Shanghai, China
| | - Jianping Lu
- Department of Radiology, Changhai Hospital, Shanghai, China
| | - Chunhong Hu
- Department of Radiology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Chengcheng Zhu
- Department of Radiology, University of Washington, Seattle, Washington, USA
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