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Bissell LA, Erhayiem B, Fent G, Hensor EMA, Burska A, Donica H, Plein S, Buch MH, Greenwood JP, Andrews J. Carotid artery volumetric measures associate with clinical ten-year cardiovascular (CV) risk scores and individual traditional CV risk factors in rheumatoid arthritis; a carotid-MRI feasibility study. Arthritis Res Ther 2018; 20:266. [PMID: 30509325 PMCID: PMC6278168 DOI: 10.1186/s13075-018-1761-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 11/04/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Common carotid artery intima-media thickness (CIMT), as measured by ultrasound, has utility in stratification of the accelerated cardiovascular risk seen in rheumatoid arthritis (RA); however, the technique has limitations. Carotid magnetic resonance imaging (MRI) is emerging as a useful research tool in the general population, but has yet to be applied in RA populations. Our objectives were to describe the utility of carotid artery MRI (carotid-MRI) in patients with RA in comparison to healthy controls and to describe the association with RA disease phenotype. METHODS Sixty-four patients with RA and no history of cardiovascular (CV) disease/diabetes mellitus were assessed for RA and CV profile, including homeostasis model assessment-estimated insulin resistance (HOMA-IR) and N-terminal pro-brain natriuretic peptide (NT-proBNP). All underwent carotid-MRI (3 T), and were compared to 24 healthy controls. Univariable analysis (UVA) and multivariable linear regression models (MVA) were used to determine associations between disease phenotype and carotid-MRI measures. RESULTS There were no significant differences in carotid arterial wall measurements between patients with RA and controls. Wall and luminal volume correlated with 10-year CV risk scores (adjusted as per 2017 European League Against Rheumatism (EULAR) guidance); rho = 0.33 (p = 0.012) and rho = 0.35 (p = 0.008), respectively, for Joint British Societies-2 risk score. In UVA, carotid-MRI volumetric measures predominantly were associated with traditional CV risk factors including age, ever-smoking and HOMA-IR (p < 0.05). Lower body mass index was associated with wall maximum thickness (r = - 0.25 p = 0.026). In MVA, age was independently associated with wall volume (B 1.13 (95% CI 0.32, 1.93), p = 0.007) and luminal volume (B 3.69 (95% CI 0.55, 6.83, p = 0.022), and RA disease duration was associated with luminal volume (B 3.88 (95% CI 0.80, 6.97), p = 0.015). CONCLUSIONS This study demonstrates the utility of carotid-MRI in RA, reporting an association between three-dimensional measures in particular and CV risk scores, individual traditional CV risk factors and RA disease duration. Carotid-MRI in RA is a promising research tool in the investigation of CVD.
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Affiliation(s)
- Lesley-Anne Bissell
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK.,NIHR Leeds Biomedical Research Centre, Leeds, UK
| | - Bara Erhayiem
- Multidisciplinary Cardiovascular Research Centre & The Division of Biomedical Imaging, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Graham Fent
- Multidisciplinary Cardiovascular Research Centre & The Division of Biomedical Imaging, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Elizabeth M A Hensor
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK.,NIHR Leeds Biomedical Research Centre, Leeds, UK
| | - Agata Burska
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK.,NIHR Leeds Biomedical Research Centre, Leeds, UK
| | | | - Sven Plein
- Multidisciplinary Cardiovascular Research Centre & The Division of Biomedical Imaging, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Maya H Buch
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK.,NIHR Leeds Biomedical Research Centre, Leeds, UK
| | - John P Greenwood
- Multidisciplinary Cardiovascular Research Centre & The Division of Biomedical Imaging, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Jacqueline Andrews
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK. .,NIHR Leeds Biomedical Research Centre, Leeds, UK.
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3
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Gallo D, Bijari PB, Morbiducci U, Qiao Y, Xie YJ, Etesami M, Habets D, Lakatta EG, Wasserman BA, Steinman DA. Segment-specific associations between local haemodynamic and imaging markers of early atherosclerosis at the carotid artery: an in vivo human study. J R Soc Interface 2018; 15:rsif.2018.0352. [PMID: 30305419 DOI: 10.1098/rsif.2018.0352] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 09/10/2018] [Indexed: 12/16/2022] Open
Abstract
Low and oscillatory wall shear stress (WSS) has long been hypothesized as a risk factor for atherosclerosis; however, evidence has been inferred primarily from model and post-mortem studies, or clinical studies of patients with already-developed plaques. This study aimed to identify associations between local haemodynamic and imaging markers of early atherosclerosis. Comprehensive magnetic resonance imaging allowed quantification of contrast enhancement (CE) (a marker of endothelial dysfunction) and vessel wall thickness at two distinct segments: the internal carotid artery bulb and the common carotid artery (CCA). Strict criteria were applied to a large dataset to exclude inward remodelling, resulting in 41 cases for which personalized computational fluid dynamic simulations were performed. After controlling for cardiovascular risk factors, bulb wall thickening was found to be weakly, but not significantly, associated with oscillatory WSS. CE at the bulb was significantly associated with low WSS (p < 0.001) and low flow helicity (p < 0.05). No significant associations were found for the CCA segment. Local haemodynamics at the bulb were significantly correlated with blood flow rates and heart rates, but not carotid bifurcation geometry (flare and curvature). Therefore low, but not oscillatory, WSS is an early independent marker of atherosclerotic changes preceding intimal thickening at the carotid bulb.
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Affiliation(s)
- Diego Gallo
- Biomedical Simulation Lab, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada.,PolitoMed Lab, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy
| | - Payam B Bijari
- Biomedical Simulation Lab, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Umberto Morbiducci
- PolitoMed Lab, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy
| | - Ye Qiao
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Yuanyuan Joyce Xie
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Maryam Etesami
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Damiaan Habets
- Biomedical Simulation Lab, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Edward G Lakatta
- Laboratory of Cardiovascular Science, Intramural Research Program, National Institute on Aging, NIA, Baltimore, MD, USA
| | - Bruce A Wasserman
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - David A Steinman
- Biomedical Simulation Lab, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada
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4
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Zhang Y, Guallar E, Malhotra S, Astor BC, Polak JF, Qiao Y, Gomes AS, Herrington DM, Sharrett AR, Bluemke DA, Wasserman BA. Carotid Artery Wall Thickness and Incident Cardiovascular Events: A Comparison between US and MRI in the Multi-Ethnic Study of Atherosclerosis (MESA). Radiology 2018; 289:649-657. [PMID: 30299234 DOI: 10.1148/radiol.2018173069] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Purpose To compare common carotid artery (CCA) wall thickness measured manually by using US and semiautomatically by using MRI, and to examine their associations with incident coronary heart disease and stroke. Materials and Methods This prospective study enrolled 698 participants without a history of clinical cardiovascular disease (CVD) from the Multi-Ethnic Study of Atherosclerosis (MESA) from July 2000 to December 2013 (mean age, 63 years; range, 45 to 84 years; same for men and women). All participants provided written informed consent. CCA wall thickness was measured with US as well as both noncontrast proton-density-weighted and intravenous gadolinium-enhanced MRI. Cox proportional hazards models were used to assess the associations between wall thickness measurements by using US and MRI with CVD outcomes. Results The adjusted hazard ratios for coronary heart disease, stroke, and CVD associated with per standard deviation increase in intima-media thickness were 1.10, 1.08, and 1.14, respectively. The corresponding associations for mean wall thickness measured with proton-density-weighted MRI were 1.32, 1.48, and 1.37, and for mean wall thickness measured with gadolinium-enhanced MRI were 1.27, 1.58, and 1.38. When included simultaneously in the same model, MRI wall thickness, but not intima-media thickness, remained associated with outcomes. Conclusion For individuals without known cardiovascular disease at baseline, wall thickness measurements by using MRI were more consistently associated with incident cardiovascular disease, particularly stroke, than were intima-media thickness by using US. © RSNA, 2018 Online supplemental material is available for this article.
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Affiliation(s)
- Yiyi Zhang
- From the Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Md (Y.Z., E.G., A.R.S.); Division of Cardiovascular Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY (S.M.); Departments of Medicine and Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wis (B.C.A.); Department of Radiology, Tufts University School of Medicine, Boston, Mass (J.F.P.); The Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 600 N Wolfe St, 367 East Park Building, Baltimore, Md 21287 (Y.Q., B.A.W.); Department of Radiological Sciences, UCLA School of Medicine, Los Angeles, Calif (A.S.G.); Department of Internal Medicine, Wake Forest School of Medicine, Winston Salem, NC (D.M.H.); and Department of Radiology and Imaging Sciences, National Institutes of Health, Bethesda, Md (D.A.B.)
| | - Eliseo Guallar
- From the Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Md (Y.Z., E.G., A.R.S.); Division of Cardiovascular Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY (S.M.); Departments of Medicine and Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wis (B.C.A.); Department of Radiology, Tufts University School of Medicine, Boston, Mass (J.F.P.); The Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 600 N Wolfe St, 367 East Park Building, Baltimore, Md 21287 (Y.Q., B.A.W.); Department of Radiological Sciences, UCLA School of Medicine, Los Angeles, Calif (A.S.G.); Department of Internal Medicine, Wake Forest School of Medicine, Winston Salem, NC (D.M.H.); and Department of Radiology and Imaging Sciences, National Institutes of Health, Bethesda, Md (D.A.B.)
| | - Saurabh Malhotra
- From the Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Md (Y.Z., E.G., A.R.S.); Division of Cardiovascular Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY (S.M.); Departments of Medicine and Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wis (B.C.A.); Department of Radiology, Tufts University School of Medicine, Boston, Mass (J.F.P.); The Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 600 N Wolfe St, 367 East Park Building, Baltimore, Md 21287 (Y.Q., B.A.W.); Department of Radiological Sciences, UCLA School of Medicine, Los Angeles, Calif (A.S.G.); Department of Internal Medicine, Wake Forest School of Medicine, Winston Salem, NC (D.M.H.); and Department of Radiology and Imaging Sciences, National Institutes of Health, Bethesda, Md (D.A.B.)
| | - Brad C Astor
- From the Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Md (Y.Z., E.G., A.R.S.); Division of Cardiovascular Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY (S.M.); Departments of Medicine and Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wis (B.C.A.); Department of Radiology, Tufts University School of Medicine, Boston, Mass (J.F.P.); The Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 600 N Wolfe St, 367 East Park Building, Baltimore, Md 21287 (Y.Q., B.A.W.); Department of Radiological Sciences, UCLA School of Medicine, Los Angeles, Calif (A.S.G.); Department of Internal Medicine, Wake Forest School of Medicine, Winston Salem, NC (D.M.H.); and Department of Radiology and Imaging Sciences, National Institutes of Health, Bethesda, Md (D.A.B.)
| | - Joseph F Polak
- From the Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Md (Y.Z., E.G., A.R.S.); Division of Cardiovascular Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY (S.M.); Departments of Medicine and Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wis (B.C.A.); Department of Radiology, Tufts University School of Medicine, Boston, Mass (J.F.P.); The Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 600 N Wolfe St, 367 East Park Building, Baltimore, Md 21287 (Y.Q., B.A.W.); Department of Radiological Sciences, UCLA School of Medicine, Los Angeles, Calif (A.S.G.); Department of Internal Medicine, Wake Forest School of Medicine, Winston Salem, NC (D.M.H.); and Department of Radiology and Imaging Sciences, National Institutes of Health, Bethesda, Md (D.A.B.)
| | - Ye Qiao
- From the Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Md (Y.Z., E.G., A.R.S.); Division of Cardiovascular Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY (S.M.); Departments of Medicine and Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wis (B.C.A.); Department of Radiology, Tufts University School of Medicine, Boston, Mass (J.F.P.); The Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 600 N Wolfe St, 367 East Park Building, Baltimore, Md 21287 (Y.Q., B.A.W.); Department of Radiological Sciences, UCLA School of Medicine, Los Angeles, Calif (A.S.G.); Department of Internal Medicine, Wake Forest School of Medicine, Winston Salem, NC (D.M.H.); and Department of Radiology and Imaging Sciences, National Institutes of Health, Bethesda, Md (D.A.B.)
| | - Antoinette S Gomes
- From the Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Md (Y.Z., E.G., A.R.S.); Division of Cardiovascular Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY (S.M.); Departments of Medicine and Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wis (B.C.A.); Department of Radiology, Tufts University School of Medicine, Boston, Mass (J.F.P.); The Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 600 N Wolfe St, 367 East Park Building, Baltimore, Md 21287 (Y.Q., B.A.W.); Department of Radiological Sciences, UCLA School of Medicine, Los Angeles, Calif (A.S.G.); Department of Internal Medicine, Wake Forest School of Medicine, Winston Salem, NC (D.M.H.); and Department of Radiology and Imaging Sciences, National Institutes of Health, Bethesda, Md (D.A.B.)
| | - David M Herrington
- From the Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Md (Y.Z., E.G., A.R.S.); Division of Cardiovascular Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY (S.M.); Departments of Medicine and Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wis (B.C.A.); Department of Radiology, Tufts University School of Medicine, Boston, Mass (J.F.P.); The Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 600 N Wolfe St, 367 East Park Building, Baltimore, Md 21287 (Y.Q., B.A.W.); Department of Radiological Sciences, UCLA School of Medicine, Los Angeles, Calif (A.S.G.); Department of Internal Medicine, Wake Forest School of Medicine, Winston Salem, NC (D.M.H.); and Department of Radiology and Imaging Sciences, National Institutes of Health, Bethesda, Md (D.A.B.)
| | - A Richey Sharrett
- From the Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Md (Y.Z., E.G., A.R.S.); Division of Cardiovascular Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY (S.M.); Departments of Medicine and Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wis (B.C.A.); Department of Radiology, Tufts University School of Medicine, Boston, Mass (J.F.P.); The Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 600 N Wolfe St, 367 East Park Building, Baltimore, Md 21287 (Y.Q., B.A.W.); Department of Radiological Sciences, UCLA School of Medicine, Los Angeles, Calif (A.S.G.); Department of Internal Medicine, Wake Forest School of Medicine, Winston Salem, NC (D.M.H.); and Department of Radiology and Imaging Sciences, National Institutes of Health, Bethesda, Md (D.A.B.)
| | - David A Bluemke
- From the Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Md (Y.Z., E.G., A.R.S.); Division of Cardiovascular Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY (S.M.); Departments of Medicine and Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wis (B.C.A.); Department of Radiology, Tufts University School of Medicine, Boston, Mass (J.F.P.); The Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 600 N Wolfe St, 367 East Park Building, Baltimore, Md 21287 (Y.Q., B.A.W.); Department of Radiological Sciences, UCLA School of Medicine, Los Angeles, Calif (A.S.G.); Department of Internal Medicine, Wake Forest School of Medicine, Winston Salem, NC (D.M.H.); and Department of Radiology and Imaging Sciences, National Institutes of Health, Bethesda, Md (D.A.B.)
| | - Bruce A Wasserman
- From the Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Md (Y.Z., E.G., A.R.S.); Division of Cardiovascular Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY (S.M.); Departments of Medicine and Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wis (B.C.A.); Department of Radiology, Tufts University School of Medicine, Boston, Mass (J.F.P.); The Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 600 N Wolfe St, 367 East Park Building, Baltimore, Md 21287 (Y.Q., B.A.W.); Department of Radiological Sciences, UCLA School of Medicine, Los Angeles, Calif (A.S.G.); Department of Internal Medicine, Wake Forest School of Medicine, Winston Salem, NC (D.M.H.); and Department of Radiology and Imaging Sciences, National Institutes of Health, Bethesda, Md (D.A.B.)
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7
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Qiao Y, Anwar Z, Intrapiromkul J, Liu L, Zeiler SR, Leigh R, Zhang Y, Guallar E, Wasserman BA. Patterns and Implications of Intracranial Arterial Remodeling in Stroke Patients. Stroke 2016; 47:434-40. [PMID: 26742795 DOI: 10.1161/strokeaha.115.009955] [Citation(s) in RCA: 129] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 11/30/2015] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE Preliminary studies suggest that intracranial arteries are capable of accommodating plaque formation by remodeling. We sought to study the ability and extent of intracranial arteries to remodel using 3-dimensional high-resolution black blood magnetic resonance imaging and investigate its relation to ischemic events. METHODS Forty-two patients with cerebrovascular ischemic events underwent 3-dimensional time-of-flight magnetic resonance angiography and contrast-enhanced black blood magnetic resonance imaging examinations at 3 T for intracranial atherosclerotic disease. Each plaque was classified by location (eg, posterior versus anterior circulation) and its likelihood to have caused a stroke identified on magnetic resonance imaging (culprit, indeterminate, or nonculprit). Lumen area, outer wall area, and wall area were measured at the lesion and reference sites. Plaque burden was calculated as wall area divided by outer wall area. The arterial remodeling ratio (RR) was calculated as outer wall area at the lesion site divided by outer wall area at the reference site after adjusting for vessel tapering. Arterial remodeling was categorized as positive if RR>1.05, intermediate if 0.95≤RR≤1.05, and negative if RR<0.95. RESULTS One hundred and thirty-seven plaques were identified in 42 patients (37% [50] posterior and 63% [87] anterior). Compared with anterior circulation plaques, posterior circulation plaques had a larger plaque burden (77.7±15.7 versus 69.0±14.0; P=0.008), higher RR (1.14±0.38 versus 0.95±0.32; P=0.002), and more often exhibited positive remodeling (54.0% versus29.9%; P=0.011). Positive remodeling was marginally associated with downstream stroke presence when adjusted for plaque burden (odds ratio 1.34, 95% confidence interval: 0.99-1.81). CONCLUSIONS Intracranial arteries remodel in response to plaque formation, and posterior circulation arteries have a greater capacity for positive remodeling and, consequently, may more likely elude angiographic detection. Arterial remodeling may provide insight into stroke risk.
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Affiliation(s)
- Ye Qiao
- From The Russell H. Morgan Department of Radiology and Radiological Sciences, The Johns Hopkins Hospital, Baltimore, MD (Y.Q., Z.A., J.I., L.L., B.A.W.); Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD (S.R.Z., R.L.); and Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (Y.Z., E.G.)
| | - Zeeshan Anwar
- From The Russell H. Morgan Department of Radiology and Radiological Sciences, The Johns Hopkins Hospital, Baltimore, MD (Y.Q., Z.A., J.I., L.L., B.A.W.); Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD (S.R.Z., R.L.); and Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (Y.Z., E.G.)
| | - Jarunee Intrapiromkul
- From The Russell H. Morgan Department of Radiology and Radiological Sciences, The Johns Hopkins Hospital, Baltimore, MD (Y.Q., Z.A., J.I., L.L., B.A.W.); Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD (S.R.Z., R.L.); and Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (Y.Z., E.G.)
| | - Li Liu
- From The Russell H. Morgan Department of Radiology and Radiological Sciences, The Johns Hopkins Hospital, Baltimore, MD (Y.Q., Z.A., J.I., L.L., B.A.W.); Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD (S.R.Z., R.L.); and Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (Y.Z., E.G.)
| | - Steven R Zeiler
- From The Russell H. Morgan Department of Radiology and Radiological Sciences, The Johns Hopkins Hospital, Baltimore, MD (Y.Q., Z.A., J.I., L.L., B.A.W.); Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD (S.R.Z., R.L.); and Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (Y.Z., E.G.)
| | - Richard Leigh
- From The Russell H. Morgan Department of Radiology and Radiological Sciences, The Johns Hopkins Hospital, Baltimore, MD (Y.Q., Z.A., J.I., L.L., B.A.W.); Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD (S.R.Z., R.L.); and Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (Y.Z., E.G.)
| | - Yiyi Zhang
- From The Russell H. Morgan Department of Radiology and Radiological Sciences, The Johns Hopkins Hospital, Baltimore, MD (Y.Q., Z.A., J.I., L.L., B.A.W.); Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD (S.R.Z., R.L.); and Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (Y.Z., E.G.)
| | - Eliseo Guallar
- From The Russell H. Morgan Department of Radiology and Radiological Sciences, The Johns Hopkins Hospital, Baltimore, MD (Y.Q., Z.A., J.I., L.L., B.A.W.); Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD (S.R.Z., R.L.); and Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (Y.Z., E.G.)
| | - Bruce A Wasserman
- From The Russell H. Morgan Department of Radiology and Radiological Sciences, The Johns Hopkins Hospital, Baltimore, MD (Y.Q., Z.A., J.I., L.L., B.A.W.); Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD (S.R.Z., R.L.); and Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (Y.Z., E.G.).
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