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Khurana NKR, Raz E, Mohamed AWH, Sotoudeh H, Reddy A, Jones J, Tanwar M. Intracranial cerebrovascular lesions on T2-weighted magnetic resonance imaging. J Clin Imaging Sci 2024; 14:19. [PMID: 38975060 PMCID: PMC11225518 DOI: 10.25259/jcis_16_2024] [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: 02/20/2024] [Accepted: 04/20/2024] [Indexed: 07/09/2024] Open
Abstract
Magnetic resonance imaging (MRI) of the brain has been implemented to evaluate multiple intracranial pathologies. Non-contrast T2-weighted images are a routinely acquired sequence in almost all neuroimaging protocols. It is not uncommon to encounter various cerebrovascular lesions incidentally on brain imaging. Neuroradiologists should evaluate the routine T2-weighted images for incidental cerebrovascular lesions, irrespective of the primary indication of the study. Vascular structures typically demonstrate a low signal flow-void on the T2-weighted images. In our experience, large cerebrovascular abnormalities are easily visible to a typical neuroradiologist. In this article, we present the spectrum of the characteristic imaging appearance of various intracranial cerebrovascular lesions on routine non-contrast T2-weighted MRI. These include aneurysm, arteriovenous malformation, arterial occlusion, capillary telangiectasia, cavernous malformation, dural arteriovenous fistula, moyamoya, proliferative angiopathy, and vein of Galen malformation.
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Affiliation(s)
| | - Eytan Raz
- Department of Radiology, New York University Grossman School of Medicine, New York, United States
| | - Atif Wasim Haneef Mohamed
- Department of Neuroradiology, The University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Houman Sotoudeh
- Department of Neuroradiology, The University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Amulya Reddy
- Department of Internal Medicine, MedStar Health-Georgetown/Washington Hospital Center, Washington, DC, United States
| | - Jesse Jones
- Department of Neurosurgery, The University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Manoj Tanwar
- Department of Neuroradiology, The University of Alabama at Birmingham, Birmingham, Alabama, United States
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Choi EJ, Levin D, Robertson A, Kirkham FJ, Muthusami P, Krishnan P, Shroff M, Moharir M, Dirks P, MacGregor D, Pulcine E, Bhathal I, Kassner A, Walker K, Allan W, deVeber G, Logan WJ, Dlamini N. Assessment of MR blood-oxygen-level-dependent (BOLD) cerebrovascular reactivity under general anesthesia in children with moyamoya. Pediatr Radiol 2024:10.1007/s00247-024-05930-8. [PMID: 38777883 DOI: 10.1007/s00247-024-05930-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 04/02/2024] [Accepted: 04/11/2024] [Indexed: 05/25/2024]
Abstract
BACKGROUND Moyamoya is a progressive, non-atherosclerotic cerebral arteriopathy that may present in childhood and currently has no cure. Early diagnosis is critical to prevent a lifelong risk of neurological morbidity. Blood-oxygen-level-dependent (BOLD) MRI cerebrovascular reactivity (CVR) imaging provides a non-invasive, in vivo measure of autoregulatory capacity and cerebrovascular reserve. However, non-compliant or younger children require general anesthesia to achieve BOLD-CVR imaging. OBJECTIVE To determine the same-day repeatability of BOLD-CVR imaging under general anesthesia in children with moyamoya. MATERIALS AND METHODS Twenty-eight examination pairs were included (mean patient age = 7.3 ± 4.0 years). Positive and negatively reacting voxels were averaged over signals and counted over brain tissue and vascular territory. The intraclass correlation coefficient (ICC), Wilcoxon signed-rank test, and Bland-Altman plots were used to assess the variability between the scans. RESULTS There was excellent-to-good (≥ 0.59) within-day repeatability in 18 out of 28 paired studies (64.3%). Wilcoxon signed-rank tests demonstrated no significant difference in the grey and white matter CVR estimates, between repeat scans (all p-values > 0.05). Bland-Altman plots of differences in mean magnitude of positive and negative and fractional positive and negative CVR estimates illustrated a reasonable degree of agreement between repeat scans and no systematic bias. CONCLUSION BOLD-CVR imaging provides repeatable assessment of cerebrovascular reserve in children with moyamoya imaged under general anesthesia.
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Affiliation(s)
- Eun Jung Choi
- Neurosciences and Mental Health Program, The Hospital for Sick Children, Toronto, Canada
- Stroke Imaging Lab for Children, Peter Gilgan Centre for Research & Learning, Toronto, ON, Canada
| | - David Levin
- Department of Anesthesia and Pain Medicine, The Hospital for Sick Children, Toronto, Canada
| | - Amanda Robertson
- Neurosciences and Mental Health Program, The Hospital for Sick Children, Toronto, Canada
- Stroke Imaging Lab for Children, Peter Gilgan Centre for Research & Learning, Toronto, ON, Canada
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - Fenella J Kirkham
- Developmental Neurosciences and Biomedical Research Centre, University College London Great Ormond Street Institute of Child Health, London, UK
| | - Prakash Muthusami
- Diagnostic Imaging and Interventional Radiology, The Hospital for Sick Children, University of Toronto, Toronto, Canada
| | - Pradeep Krishnan
- Diagnostic Imaging and Interventional Radiology, The Hospital for Sick Children, University of Toronto, Toronto, Canada
| | - Manohar Shroff
- Diagnostic Imaging and Interventional Radiology, The Hospital for Sick Children, University of Toronto, Toronto, Canada
| | | | - Peter Dirks
- Department of Neurosurgery, The Hospital for Sick Children, Toronto, Canada
| | - Daune MacGregor
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - Elizabeth Pulcine
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - Ishvinder Bhathal
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - Andrea Kassner
- Stroke Imaging Lab for Children, Peter Gilgan Centre for Research & Learning, Toronto, ON, Canada
- Medical Imaging, University of Toronto, Toronto, ON, Canada
| | - Kirstin Walker
- Neurosciences and Mental Health Program, The Hospital for Sick Children, Toronto, Canada
- Stroke Imaging Lab for Children, Peter Gilgan Centre for Research & Learning, Toronto, ON, Canada
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - Warwick Allan
- Department of Anesthesia and Pain Medicine, The Hospital for Sick Children, Toronto, Canada
| | - Gabrielle deVeber
- Stroke Imaging Lab for Children, Peter Gilgan Centre for Research & Learning, Toronto, ON, Canada
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
- Child Health Evaluative Sciences Program, The Hospital for Sick Children, Toronto, Canada
| | - William J Logan
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - Nomazulu Dlamini
- Neurosciences and Mental Health Program, The Hospital for Sick Children, Toronto, Canada.
- Stroke Imaging Lab for Children, Peter Gilgan Centre for Research & Learning, Toronto, ON, Canada.
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada.
- Child Health Evaluative Sciences Program, The Hospital for Sick Children, Toronto, Canada.
- Department of Paediatrics, Division of Neurology, The Hospital for Sick Children, 555 University Avenue, Toronto, ON, MX5 1X8, Canada.
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Helmy M, Liao Y, Zhao Z, Li Z, He K, Xu B. Assessing donor-recipient arterial pressure dynamics in STA-MCA bypass for moyamoya disease. Chin Neurosurg J 2024; 10:15. [PMID: 38734681 PMCID: PMC11088777 DOI: 10.1186/s41016-024-00367-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
BACKGROUND In bypass surgery for moyamoya disease (MMD), the superficial temporal artery's (STA) pressure needs to surpass that of the cortical M4 recipient of the middle cerebral artery (MCA), boosting cerebral blood flow into the MCA and enhancing cerebral circulation. This study investigates the STA-MCA arterial pressure parameters and gradients during bypass surgery, aiming to deepen our understanding of hemodynamic shifts pre- and post-operation. METHODS DSA imaging data were prospectively collected from patients diagnosed with bilateral MMD who underwent STA-MCA bypass surgery between 2022 and 2023 and stratified according to the Suzuki stage. The mean arterial pressure (MAP) of the donor and recipient arteries was directly measured during the STA-MCA bypass procedure, and these data were statistically analyzed and evaluated. RESULTS Among 48 MMD patients, Suzuki grading revealed that 43.8% were in early stages (II and III), while 56.2% were in advanced stages (IV, V, and VI). Predominantly, 77.1% presented with ischemic-type MMD and 22.9% with hemorrhagic type. Pre-bypass assessments showed that 62.5% exhibited antegrade blood flow direction, and 37.5% had retrograde. The mean recipient artery pressure was 35.0 ± 2.3 mmHg, with a mean donor-recipient pressure gradient (δP) of 46.4 ± 2.5 mmHg between donor and recipient arteries. Post-bypass, mean recipient artery pressure increased to 73.3 ± 1.6 mmHg. No significant correlation (r = 0.18, P = 0.21) was noted between δP and Suzuki staging. CONCLUSION Our study elucidated that cerebral blood pressure significantly decreases beyond the moyamoya network at the distal M4 segment. Furthermore, we observed bidirectional flow in MCA territories and a significant positive pressure gradient between the STA and M4 segments. The lack of correlation between Suzuki stages and M4 pressures indicates that angiographic severity may not reflect hemodynamic conditions before surgery, highlighting the need for customized surgical approaches.
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Affiliation(s)
- Mohamed Helmy
- Neurosurgery Department, Fudan University Huashan Hospital, Shanghai, 200040, People's Republic of China
- National Center for Neurological Disorders, Shanghai, 200040, People's Republic of China
| | - Yujun Liao
- Neurosurgery Department, Fudan University Huashan Hospital, Shanghai, 200040, People's Republic of China
- National Center for Neurological Disorders, Shanghai, 200040, People's Republic of China
| | - Zehao Zhao
- Neurosurgery Department, Fudan University Huashan Hospital, Shanghai, 200040, People's Republic of China
- National Center for Neurological Disorders, Shanghai, 200040, People's Republic of China
| | - Zhiqi Li
- Neurosurgery Department, Fudan University Huashan Hospital, Shanghai, 200040, People's Republic of China
- National Center for Neurological Disorders, Shanghai, 200040, People's Republic of China
| | - Kangmin He
- Neurosurgery Department, Fudan University Huashan Hospital, Shanghai, 200040, People's Republic of China
- National Center for Neurological Disorders, Shanghai, 200040, People's Republic of China
| | - Bin Xu
- Neurosurgery Department, Fudan University Huashan Hospital, Shanghai, 200040, People's Republic of China.
- National Center for Neurological Disorders, Shanghai, 200040, People's Republic of China.
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Joshi SB, Sharma R, Manjunath N, Dhanakshirur RR, Ganesh VL, Jain S, Raheja A, Devrajan LJ, Nehra A, Suri A. Functional and Neuropsychological Outcome After Surgical Treatment of Moyamoya Disease. World Neurosurg 2024; 185:e397-e406. [PMID: 38364899 DOI: 10.1016/j.wneu.2024.02.038] [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: 12/29/2023] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/18/2024]
Abstract
BACKGROUND Moyamoya disease (MMD) is a rare cerebrovascular disease characterized by progressive stenosis of the supraclinoid internal carotid artery. As a result of chronically decreased brain perfusion, eloquent areas of the brain become hypoperfused, leading to cognitive changes in patients. Repeated infarcts and bleeds produce clinically apparent neurologic deficits. OBJECTIVES 1) To study the functional and neuropsychological outcome in MMD after revascularization surgery. 2) To find postrevascularization correlation between functional and neuropsychological improvement and radiologic improvement. METHODS A single-center prospective and analytic study was carried out including 21 patients with MMD during the study period from March 2021 to December 2022. Patients were evaluated and compared before and after revascularization for functional, neuropsychological, and radiologic status. RESULTS Postoperative functional outcome in terms of modified Rankin Scale score showed improvement in 33.33% of cases (P = 0.0769). An overall improving trend was observed in different neuropsychological domains in both adult and pediatric age groups. However, the trend of neuropsychological improvement was better in adults compared with pediatric patients. Radiologic outcome in the form of the Angiographic Outcome Score (AOS) significantly improved after revascularization (P = 0.0001). There was a trend toward improvement in magnetic resonance imaging (MRI) perfusion in the middle cerebral artery and anterior cerebral artery territories, 4.7% (P = 0.075) and 9.33% (P = 0.058) respectively, compared with preoperative MRI perfusion. CONCLUSIONS After revascularization, significant improvement occurred in functional and neuropsychological status. This result was also shown radiologically as evidenced by improvement in MRI perfusion and cerebral angiography.
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Affiliation(s)
- Siddharth B Joshi
- Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | - Rajeev Sharma
- Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | - Niveditha Manjunath
- Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | - Rohan Raju Dhanakshirur
- Amarnath and Shashi Khosla School of Information Technology, Indian Institute of Technology, New Delhi, India
| | - V L Ganesh
- Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | - Savyasachi Jain
- Department of Neuroimaging and Interventional Neuroradiology, All India Institute of Medical Sciences, New Delhi, India
| | - Amol Raheja
- Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | - Leve Joseph Devrajan
- Department of Neuroimaging and Interventional Neuroradiology, All India Institute of Medical Sciences, New Delhi, India
| | - Ashima Nehra
- Department of Neuropsychology, All India Institute of Medical Sciences, New Delhi, India
| | - Ashish Suri
- Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India.
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Gupta N, Miller E, Bhatia A, Richer J, Aviv RI, Wilson N. Imaging Review of Pediatric Monogenic CNS Vasculopathy with Genetic Correlation. Radiographics 2024; 44:e230087. [PMID: 38573816 DOI: 10.1148/rg.230087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Monogenic cerebral vasculopathy is a rare but progressively recognizable cause of pediatric cerebral vasculopathy manifesting as early as fetal life. These monogenic cerebral vasculopathies can be silent or manifest variably as fetal or neonatal distress, neurologic deficit, developmental delay, cerebral palsy, seizures, or stroke. The radiologic findings can be nonspecific, but the presence of disease-specific cerebral and extracerebral imaging features can point to a diagnosis and guide genetic testing, allowing targeted treatment. The authors review the existing literature describing the frequently encountered and rare monogenic cerebral vascular disorders affecting young patients and describe the relevant pathogenesis, with an attempt to categorize them based on the defective step in vascular homeostasis and/or signaling pathways and characteristic cerebrovascular imaging findings. The authors also highlight the role of imaging and a dedicated imaging protocol in identification of distinct cerebral and extracerebral findings crucial in the diagnostic algorithm and selection of genetic testing. Early and precise recognition of these entities allows timely intervention, preventing or delaying complications and thereby improving quality of life. It is also imperative to identify the specific pathogenic variant and pattern of inheritance for satisfactory genetic counseling and care of at-risk family members. Last, the authors present an image-based approach to these young-onset monogenic cerebral vasculopathies that is guided by the size and predominant radiologic characteristics of the affected vessel with reasonable overlap. ©RSNA, 2024 Test Your Knowledge questions for this article are available in the supplemental material.
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Affiliation(s)
- Neetika Gupta
- From the Department of Diagnostic and Interventional Radiology, Divisions of ER (N.G.) and Neuroradiology (E.M.), The Hospital for Sick Children, University of Toronto, 170 Elizabeth St, Toronto, ON, Canada M5G 1E8; Departments of Medical Imaging (N.G., N.W.) and Genetics (J.R.), Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, ON, Canada; Department of Radiology, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pa (A.B.); and Department of Radiology, Radiation Oncology, and Medical Physics, Division of Neuroradiology, Civic and General Campus, University of Ottawa, The Ottawa Hospital, Ottawa, Canada (R.I.A.)
| | - Elka Miller
- From the Department of Diagnostic and Interventional Radiology, Divisions of ER (N.G.) and Neuroradiology (E.M.), The Hospital for Sick Children, University of Toronto, 170 Elizabeth St, Toronto, ON, Canada M5G 1E8; Departments of Medical Imaging (N.G., N.W.) and Genetics (J.R.), Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, ON, Canada; Department of Radiology, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pa (A.B.); and Department of Radiology, Radiation Oncology, and Medical Physics, Division of Neuroradiology, Civic and General Campus, University of Ottawa, The Ottawa Hospital, Ottawa, Canada (R.I.A.)
| | - Aashim Bhatia
- From the Department of Diagnostic and Interventional Radiology, Divisions of ER (N.G.) and Neuroradiology (E.M.), The Hospital for Sick Children, University of Toronto, 170 Elizabeth St, Toronto, ON, Canada M5G 1E8; Departments of Medical Imaging (N.G., N.W.) and Genetics (J.R.), Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, ON, Canada; Department of Radiology, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pa (A.B.); and Department of Radiology, Radiation Oncology, and Medical Physics, Division of Neuroradiology, Civic and General Campus, University of Ottawa, The Ottawa Hospital, Ottawa, Canada (R.I.A.)
| | - Julie Richer
- From the Department of Diagnostic and Interventional Radiology, Divisions of ER (N.G.) and Neuroradiology (E.M.), The Hospital for Sick Children, University of Toronto, 170 Elizabeth St, Toronto, ON, Canada M5G 1E8; Departments of Medical Imaging (N.G., N.W.) and Genetics (J.R.), Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, ON, Canada; Department of Radiology, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pa (A.B.); and Department of Radiology, Radiation Oncology, and Medical Physics, Division of Neuroradiology, Civic and General Campus, University of Ottawa, The Ottawa Hospital, Ottawa, Canada (R.I.A.)
| | - Richard I Aviv
- From the Department of Diagnostic and Interventional Radiology, Divisions of ER (N.G.) and Neuroradiology (E.M.), The Hospital for Sick Children, University of Toronto, 170 Elizabeth St, Toronto, ON, Canada M5G 1E8; Departments of Medical Imaging (N.G., N.W.) and Genetics (J.R.), Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, ON, Canada; Department of Radiology, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pa (A.B.); and Department of Radiology, Radiation Oncology, and Medical Physics, Division of Neuroradiology, Civic and General Campus, University of Ottawa, The Ottawa Hospital, Ottawa, Canada (R.I.A.)
| | - Nagwa Wilson
- From the Department of Diagnostic and Interventional Radiology, Divisions of ER (N.G.) and Neuroradiology (E.M.), The Hospital for Sick Children, University of Toronto, 170 Elizabeth St, Toronto, ON, Canada M5G 1E8; Departments of Medical Imaging (N.G., N.W.) and Genetics (J.R.), Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, ON, Canada; Department of Radiology, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pa (A.B.); and Department of Radiology, Radiation Oncology, and Medical Physics, Division of Neuroradiology, Civic and General Campus, University of Ottawa, The Ottawa Hospital, Ottawa, Canada (R.I.A.)
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Yang H, Huang G, Li X, Wu M, Zhou W, Yin X, Zhang M, Chen Z. High-resolution magnetic resonance vessel wall imaging provides new insights into Moyamoya disease. Front Neurosci 2024; 18:1375645. [PMID: 38665292 PMCID: PMC11043609 DOI: 10.3389/fnins.2024.1375645] [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: 01/24/2024] [Accepted: 03/13/2024] [Indexed: 04/28/2024] Open
Abstract
Moyamoya disease (MMD) is a rare condition that affects the blood vessels of the central nervous system. This cerebrovascular disease is characterized by progressive narrowing and blockage of the internal carotid, middle cerebral, and anterior cerebral arteries, which results in the formation of a compensatory fragile vascular network. Currently, digital subtraction angiography (DSA) is considered the gold standard in diagnosing MMD. However, this diagnostic technique is invasive and may not be suitable for all patients. Hence, non-invasive imaging methods such as computed tomography angiography (CTA) and magnetic resonance angiography (MRA) are often used. However, these methods may have less reliable diagnostic results. Therefore, High-Resolution Magnetic Resonance Vessel Wall Imaging (HR-VWI) has emerged as the most accurate method for observing and analyzing arterial wall structure. It enhances the resolution of arterial walls and enables quantitative and qualitative analysis of plaque, facilitating the identification of atherosclerotic lesions, vascular entrapment, myofibrillar dysplasia, moyamoya vasculopathy, and other related conditions. Consequently, HR-VWI provides a new and more reliable evaluation criterion for diagnosing vascular lesions in patients with Moyamoya disease.
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Affiliation(s)
- Hui Yang
- Department of Neurology, Clinical Medical School of Jiujiang University, Jiujiang, China
- Jiujiang Clinical Precision Medicine Research Center, Jiujiang, China
- School of Basic Medicine, Jiujiang University, Jiujiang, China
| | - Guilan Huang
- Department of Neurology, Clinical Medical School of Jiujiang University, Jiujiang, China
- Jiujiang Clinical Precision Medicine Research Center, Jiujiang, China
| | - Xi Li
- Department of Neurology, University of California Irvine Medical Center, Irvine, CA, United States
| | - Moxin Wu
- Jiujiang Clinical Precision Medicine Research Center, Jiujiang, China
| | - Weixin Zhou
- Jiujiang Clinical Precision Medicine Research Center, Jiujiang, China
| | - Xiaoping Yin
- Department of Neurology, Clinical Medical School of Jiujiang University, Jiujiang, China
- Jiujiang Clinical Precision Medicine Research Center, Jiujiang, China
| | - Manqing Zhang
- School of Basic Medicine, Jiujiang University, Jiujiang, China
| | - Zhiying Chen
- Department of Neurology, Clinical Medical School of Jiujiang University, Jiujiang, China
- Jiujiang Clinical Precision Medicine Research Center, Jiujiang, China
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Schwartzmann Y, Spektor S, Moscovici S, Jubran H, Metanis I, Jouaba T, Cohen JE, Gomori JM, Leker RR. Comparison between moyamoya disease and moyamoya syndrome in Israel. J Stroke Cerebrovasc Dis 2024; 33:107635. [PMID: 38342272 DOI: 10.1016/j.jstrokecerebrovasdis.2024.107635] [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: 06/26/2023] [Revised: 01/23/2024] [Accepted: 02/09/2024] [Indexed: 02/13/2024] Open
Abstract
BACKGROUND AND AIMS Moyamoya is a chronic brain vasculopathy involving the distal intracranial internal carotid artery (ICA) or proximal middle cerebral artery (MCA). Moyamoya patients can be divided into those with primary moyamoya disease (MMD) and those with moyamoya secondary to other known causes such as intracranial atherosclerosis (moymoya syndrome [MMS]). Our aim was to compare the characteristics of MMD patients to those of MMS patients in a sample of Israeli patients seen over the course of 20 years at a tertiary referral center. METHODS Included patients were diagnosed with either MMD or MMS based on typical imaging findings and the presence or absence of known concomitant vascular risk factors or associated disorders and vascular disease. Patients with MMS were compared to those with MMD. Demographics, symptoms, signs, and radiological data were compared between the groups. Treatment options and long-term rates of recurrent stroke and functional outcome were also studied. RESULTS Overall, 64 patients were included (25 MMD, 39 MMS). Patients with MMD were significantly younger (median IQR 20 (7-32) vs. 40 (19-52); p=0.035). Patients with MMS more often had vascular risk factors but there were no significant differences in clinical presentations or long-term disability rates between the groups and a similar proportion of patients underwent surgical interventions to restore hemispheric perfusion in both groups (48% vs. 44% MMS vs. MMD; p=0.7). Almost one in four patient had a recurrent stroke after the initial diagnosis in both groups. Most recurrences occurred in the pre-surgery period in the MMS group and in the post-surgery period in the MMD group. CONCLUSIONS There were no statistically significant differences in clinical or radiological presentations between the MMS and MMD patients. The course is not benign with recurrent stroke occurring in as many as 25%. More data is needed in order to identify those at high risk for stroke occurrence and recurrence.
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Affiliation(s)
- Y Schwartzmann
- Departments of Neurology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - S Spektor
- Departments of Neurosurgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - S Moscovici
- Departments of Neurosurgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.
| | - H Jubran
- Departments of Neurology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - I Metanis
- Departments of Neurology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.
| | - T Jouaba
- Departments of Neurology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - J E Cohen
- Departments of Neurosurgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - J M Gomori
- Departments of Radiology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.
| | - R R Leker
- Departments of Neurology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.
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8
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Zhang H, Lu M, Liu S, Liu D, Liu X, Shen X, Han C, Sheng F, Cai J. Predictors of Stroke Outcomes in Conservatively Treated Patients With Moyamoya Disease: A Follow-up MRI Study. J Magn Reson Imaging 2024; 59:1456-1463. [PMID: 37357525 DOI: 10.1002/jmri.28880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 06/11/2023] [Accepted: 06/13/2023] [Indexed: 06/27/2023] Open
Abstract
BACKGROUND Little is known about the association between stroke and imaging and clinical features in conservatively treated patients with moyamoya disease (MMD). PURPOSE To investigate independent risk factors for stroke in conservatively treated patients with MMD during a long-term follow-up. STUDY TYPE Prospective study. SUBJECTS One hundred sixty conservatively managed patients with MMD (median age 46 years, 89 male). FIELD STRENGTH/SEQUENCE Time of flight, turbo inversion recovery magnitude T1WI, turbo spin echo (TSE) T2WI, echo-planar imaging DWI, T2-fluid attenuated inversion recovery, dynamic susceptibility contrast-magnetic resonance imaging, and pre- and post-contrast 3D TSE T1WI sequences at 3.0 Tesla. ASSESSMENT Patients were assessed at baseline and followed yearly. Ischemic and hemorrhagic stroke incidence rates were determined. Multiple demographic, clinical (modified Rankin score [mRS]), and cerebral imaging (cerebral blood volume [CBV] and concentric enhancement of arterial wall) factors at baseline were considered as potential predictors of stroke during the follow-up period. STATISTICAL TESTS Univariable and multivariable Cox proportional hazards models to calculate the hazard ratios (HRs) and corresponding 95% confidence interval (CI) for stroke. Cumulative risk of stroke was estimated by the Kaplan-Meier product-limit method. A P value <0.05 was considered statistically significant. RESULTS The median follow-up duration was 47 months. During the follow-up period, 18 (11.25%) patients experienced stroke events (13 [8.13%] ischemic, 5 [3.12%] hemorrhagic). Univariable analysis showed that 11 factors were significantly associated with stroke. After adjustment for clinical characteristics, multivariable analysis showed that mRS score ≥3 (HR, 1.99; 95% CI, 1.26-3.14), decreased CBV (HR, 5.31; 95% CI, 2.32-12.13), and concentric enhancement of the arterial wall (HR, 4.16; 95% CI, 1.55-11.15) were significantly associated with stroke. DATA CONCLUSION Decreased CBV, mRS score ≥ 3, and concentric enhancement of the arterial wall were significantly associated with increased incidence of stroke in conservatively treated MMD. EVIDENCE LEVEL 2 TECHNICAL EFFICACY: Stage 4.
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Affiliation(s)
- Hongtao Zhang
- Department of Radiology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Mingming Lu
- Department of Radiology, Pingjin Hospital, Characteristic Medical Center of Chinese People's Armed Police Force, Tianjin, China
| | - Shitong Liu
- Department of Radiology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Dongqing Liu
- Department of Radiology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xu Liu
- Department of Radiology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xuxuan Shen
- Department of Neurosurgery, The First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Cong Han
- Department of Neurosurgery, The First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Fugeng Sheng
- Department of Radiology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Jianming Cai
- Department of Radiology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
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9
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Hong J, Yoon S, Shim KW, Park YR. Screening of Moyamoya Disease From Retinal Photographs: Development and Validation of Deep Learning Algorithms. Stroke 2024; 55:715-724. [PMID: 38258570 PMCID: PMC10896198 DOI: 10.1161/strokeaha.123.044026] [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: 06/04/2023] [Accepted: 12/13/2023] [Indexed: 01/24/2024]
Abstract
BACKGROUND Moyamoya disease (MMD) is a rare and complex pathological condition characterized by an abnormal collateral circulation network in the basal brain. The diagnosis of MMD and its progression is unpredictable and influenced by many factors. MMD can affect the blood vessels supplying the eyes, resulting in a range of ocular symptoms. In this study, we developed a deep learning model using real-world data to assist a diagnosis and determine the stage of the disease using retinal photographs. METHODS This retrospective observational study conducted from August 2006 to March 2022 included 498 retinal photographs from 78 patients with MMD and 3835 photographs from 1649 healthy participants. Photographs were preprocessed, and an ResNeXt50 model was developed. Model performance was measured using receiver operating curves and their area under the receiver operating characteristic curve, accuracy, sensitivity, and F1-score. Heatmaps and progressive erasing plus progressive restoration were performed to validate the faithfulness. RESULTS Overall, 322 retinal photographs from 67 patients with MMD and 3752 retinal photographs from 1616 healthy participants were used to develop a screening and stage prediction model for MMD. The average age of the patients with MMD was 44.1 years, and the average follow-up time was 115 months. Stage 3 photographs were the most prevalent, followed by stages 4, 5, 2, 1, and 6 and healthy. The MMD screening model had an average area under the receiver operating characteristic curve of 94.6%, with 89.8% sensitivity and 90.4% specificity at the best cutoff point. MMD stage prediction models had an area under the receiver operating characteristic curve of 78% or higher, with stage 3 performing the best at 93.6%. Heatmap identified the vascular region of the fundus as important for prediction, and progressive erasing plus progressive restoration result shows an area under the receiver operating characteristic curve of 70% only with 50% of the important regions. CONCLUSIONS This study demonstrated that retinal photographs could be used as potential biomarkers for screening and staging of MMD and the disease stage could be classified by a deep learning algorithm.
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Affiliation(s)
- JaeSeong Hong
- Department of Biomedical Systems Informatics (J.H., Y.R.P.), Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sangchul Yoon
- Department of Medical Humanities and Social Sciences (S.Y.), Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kyu Won Shim
- Department of Neurosurgery (K.W.S.), Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yu Rang Park
- Department of Biomedical Systems Informatics (J.H., Y.R.P.), Yonsei University College of Medicine, Seoul, Republic of Korea
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10
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Maezawa Y, Nagasaki K, Aiyama H, Yamamoto Y, Shibata Y. Moyamoya Syndrome: Differential Diagnosis in Patients With Central Nervous System Symptoms and Hyperthyroidism. Cureus 2024; 16:e53519. [PMID: 38445131 PMCID: PMC10911964 DOI: 10.7759/cureus.53519] [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] [Accepted: 02/03/2024] [Indexed: 03/07/2024] Open
Abstract
Moyamoya syndrome, known as secondary moyamoya disease, is associated with various primary illnesses, such as brain tumor, meningitis, autoimmune disease, and thyrotoxicosis, and their relations are not clear. We report a rare case of moyamoya syndrome in a patient with Graves' disease. An 18-year-old woman was admitted to our hospital due to convulsions. She had symptoms of palpitations and fatiguability for half a year and transient numbness in her left upper extremity and dysarthria for a month. In physical findings, tachycardia and diffuse thyroid swelling were noted. A blood test revealed thyrotoxicosis and antithyroid antibody, and a diagnosis of Graves' disease was obtained. Brain magnetic resonance imaging (MRI) showed bilateral internal carotid artery occlusion. We finally diagnosed the patient with moyamoya syndrome caused by Graves' disease. Moyamoya disease or syndrome can cause symptoms like a stroke, sometimes requiring neurosurgical treatment. In our case, the therapy for Graves' disease resolved the symptoms. When diagnosing moyamoya disease, it is necessary to confirm whether there are any background diseases, such as Graves' disease.
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Affiliation(s)
- Yosuke Maezawa
- Internal Medicine, Mito Kyodo General Hospital, University of Tsukuba, Mito, JPN
| | - Kazuya Nagasaki
- Internal Medicine, Mito Kyodo General Hospital, University of Tsukuba, Mito, JPN
| | - Hitoshi Aiyama
- Neurosurgery, Mito Kyodo General Hospital, University of Tsukuba, Mito, JPN
| | - Yuki Yamamoto
- Endocrinology and Metabolism, Mito Kyodo General Hospital, University of Tsukuba, Mito, JPN
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11
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Mallikarjun KS, Eldaya RW, Miller-Thomas MM, Orlowski HL, Parsons MS. Good Gone Bad: Complications of Chemotherapy, Immunotherapy, and Radiotherapy on the CNS. Curr Probl Diagn Radiol 2024; 53:133-149. [PMID: 37495483 DOI: 10.1067/j.cpradiol.2023.06.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 05/24/2023] [Accepted: 06/28/2023] [Indexed: 07/28/2023]
Abstract
With recent advancements in cancer therapy, especially immunotherapy, overall survival of many cancers has increased and patient toxicity has been reduced. However, many complications of traditional cancer therapy are still prevalent and complications of novel therapies are just beginning to appear. The neuroradiologist may be the first to visualize signs of these complications on imaging. This article describes the notable imaging findings of several unique and characteristic complications of CNS cancer therapy, including toxicities of chemotherapies, immunotherapies, and radiotherapy. Complications of chemotherapeutic agents covered include methotrexate-induced and disseminated necrotizing leukoencephalopathy, and chemotherapy-induced myelopathy. Immunotherapy complications included are Tacrolimus-related Optic Neuropathy, Rituximab and Immune reconstitution inflammatory syndrome-associated Progressive Multifocal Leukoencephalopathy, Bevacizumab-associated late radiation-induced neurotoxicity, and Ipilimumab-induced hypophysitis. Lastly, radiation-induced neurotoxicities are covered, including myelopathy, radiation necrosis, cerebral atrophy, leukoencephalopathy, optic neuropathy, mineralizing microangiopathy, stroke-like migraine attacks, osteonecrosis, and vasculopathies. Neuroradiologists will increasingly encounter patients who have undergone treatment with more than 1 therapeutic modality, resulting in overlapping findings as well. Recognition of the common complications of these therapies on imaging is critical to minimizing the effects of these potential short- and long-term complications.
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12
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Miranda Bautista J, Garrido Morro I, Fernández García P, Herrera Herrera I. FLAIR hyperintensity in the subarachnoid space: Main differentials. RADIOLOGIA 2024; 66:78-89. [PMID: 38365357 DOI: 10.1016/j.rxeng.2022.01.003] [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: 09/28/2021] [Accepted: 01/21/2022] [Indexed: 02/18/2024]
Abstract
The fluid-attenuated inversion recovery (FLAIR) sequence forms part of the vast majority of current diagnostic protocols for brain MRI. This sequence enables the suppression of the signal from cerebrospinal fluid, facilitating the detection of disease involving the subarachnoid space. The causes of hyperintensity in the arachnoid space in this sequence can be divided into two main categories: hyperintensity due to disease and hyperintensity due to artifacts. Hyperintensity due to tumors, inflammation, vascular disease, or hypercellularity of the cerebrospinal fluid or hematic contents is well known. However, numerous other non-pathological conditions, mainly due to artifacts, that are also associated with this finding are a potential source of diagnostic errors.
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Affiliation(s)
| | - I Garrido Morro
- Servicio de Radiodiagnóstico, HGU Gregorio Marañón, Madrid, Spain
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13
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Ziani H, Nasri S, Kamaoui I, Skiker I. Moya-Moya Disease Revealed by a Non-lobar Intracerebral Hemorrhage in an Adult. Cureus 2024; 16:e52204. [PMID: 38347984 PMCID: PMC10860472 DOI: 10.7759/cureus.52204] [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] [Accepted: 01/13/2024] [Indexed: 02/15/2024] Open
Abstract
Moya-Moya disease (MMD) is a rare cerebral vasculopathy affecting children and adults. It is a progressive steno-occlusive arterial disease generally discovered during the etiological assessment of an ischemic or hemorrhagic stroke. Its diagnosis is based essentially on imaging. Cerebral digital subtraction angiography (DSA) remains the gold standard. We report the case of a 42-year-old male patient admitted for the loss of consciousness with a Glasgow Coma Scale (GCS) of 12/15. A brain CT scan revealed a right capsulo-lenticular hematoma with ventricular flooding and hydrocephalus. Cerebral CT angiography showed features of Moya-Moya vasculopathy, which was confirmed by a cerebral catheter angiogram.
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Affiliation(s)
- Hamid Ziani
- Radiology, Mohammed VI University Hospital, Faculty of Medicine, University Mohammed First, Oujda, MAR
| | - Siham Nasri
- Radiology, Mohammed VI University Hospital, Faculty of Medicine, University Mohammed First, Oujda, MAR
| | - Imane Kamaoui
- Radiology, Mohammed VI University Hospital, Faculty of Medicine, University Mohammed First, Oujda, MAR
| | - Imane Skiker
- Radiology, Mohammed VI University Hospital, Faculty of Medicine, University Mohammed First, Oujda, MAR
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14
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Wei Q, Wang XY, Zhang LJ, Yu CY, Shu HY, Liao XL, Xu SH, Su T, Kang M, Shao Y. A Functional Magnetic Resonance Imaging Study Using Dynamic Amplitude of Low-Frequency Fluctuation to Assess Brain Activity in Patients with Moyamoya Disease. Brain Connect 2023; 13:621-630. [PMID: 37930733 DOI: 10.1089/brain.2023.0017] [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] [Indexed: 11/07/2023] Open
Abstract
Introduction: The purpose of this study was to monitor and record the dynamic brain activity of patients with moyamoya disease (MMD), as well as to study the relationship between brain abnormalities and presenting clinical features. Methods: A total of 16 patients with MMD (2 males and 14 females) were invited to participate in the study, as were healthy controls (HCs) with the same number and sex ratio. In this study, the dynamic amplitude of low-frequency fluctuation (dALFF) was utilized to assess changes in spontaneous brain activity. Moreover, we also used correlation analysis to study the relationship among the measured mean of dALFF, behavioral performances, and the retinal nerve fiber layer and the Hospital Anxiety and Depression Scale (HADS) score to explore the potential relationship between MMD and anxiety and depression. Results: Our study reveals that in MMD, dALFF levels decreased in the left lingual gyrus, right insula, and occipital lobe. Discussion: In this study, we found and discussed the potential relationship between the abnormal activities in multiple brain regions and related functional network disorders in patients with MMD, as well as the damage to brain regions that process emotion and vision, in the hopes of providing more ideas for the clinical diagnosis and treatment of MMD.
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Affiliation(s)
- Qian Wei
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, China
- Queen Mary School, Nanchang University, Nanchang, China
| | - Xiao-Yu Wang
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, China
- Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Li-Juan Zhang
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, China
- Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Chen-Yu Yu
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, China
- Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Hui-Ye Shu
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, China
- Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Xu-Lin Liao
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - San-Hua Xu
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, China
- Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Ting Su
- Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts, USA
| | - Min Kang
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, China
- Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Yi Shao
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, China
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15
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Helmy M, Liao Y, Luo S, Xu B. How I do it: direct pressure measurement in moyamoya bypass. Acta Neurochir (Wien) 2023; 165:3631-3635. [PMID: 37870662 DOI: 10.1007/s00701-023-05842-w] [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: 06/26/2023] [Accepted: 10/08/2023] [Indexed: 10/24/2023]
Abstract
BACKGROUND The direct quantitative measurement of donor and recipient pressures in patients with moyamoya vasculopathy (MMV) during superficial temporal artery-middle cerebral artery (STA-MCA) bypass surgery has yet to be reported in academic literature. METHOD Using a wireless pressure wire, we describe our approach to measuring seven pressure parameters in MMV patients step-by-step. CONCLUSION Direct intraluminal pressure measurement of donor and recipient arteries provides a practical and accurate means to quantify cerebral hemodynamic parameters in MMV patients, enhancing understanding of individualized hemodynamic changes pre- and post-surgery.
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Affiliation(s)
- Mohamed Helmy
- Department of Neurosurgery, Fudan University Huashan Hospital, Shanghai, 200040, China
- China National Center of Neurological Diseases, Shanghai, 200040, China
| | - Yujun Liao
- Department of Neurosurgery, Fudan University Huashan Hospital, Shanghai, 200040, China
- China National Center of Neurological Diseases, Shanghai, 200040, China
| | - Siliang Luo
- Department of Neurosurgery, Guangdong Sanjiu Brain Hospital, Guangzhou, 510510, Guangdong, China
| | - Bin Xu
- Department of Neurosurgery, Fudan University Huashan Hospital, Shanghai, 200040, China.
- China National Center of Neurological Diseases, Shanghai, 200040, China.
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16
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Zhao MY, Armindo RD, Gauden AJ, Yim B, Tong E, Moseley M, Steinberg GK, Zaharchuk G. Revascularization improves vascular hemodynamics - a study assessing cerebrovascular reserve and transit time in Moyamoya patients using MRI. J Cereb Blood Flow Metab 2023; 43:138-151. [PMID: 36408536 PMCID: PMC10638998 DOI: 10.1177/0271678x221140343] [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: 07/28/2022] [Revised: 10/04/2022] [Accepted: 10/25/2022] [Indexed: 11/22/2022]
Abstract
Cerebrovascular reserve (CVR) reflects the capacity of cerebral blood flow (CBF) to change. Decreased CVR implies poor hemodynamics and is linked to a higher risk for stroke. Revascularization has been shown to improve CBF in patients with vasculopathy such as Moyamoya disease. Dynamic susceptibility contrast (DSC) can measure transit time to evaluate patients suspected of stroke. Arterial spin labeling (ASL) is a non-invasive technique for CBF, CVR, and arterial transit time (ATT) measurements. Here, we investigate the change in hemodynamics 4-12 months after extracranial-to-intracranial direct bypass in 52 Moyamoya patients using ASL with single and multiple post-labeling delays (PLD). Images were collected using ASL and DSC with acetazolamide. CVR, CBF, ATT, and time-to-maximum (Tmax) were measured in different flow territories. Results showed that hemodynamics improved significantly in regions affected by arterial occlusions after revascularization. CVR increased by 16 ± 11% (p < 0.01) and 25 ± 13% (p < 0.01) for single- and multi-PLD ASL, respectively. Transit time measured by multi-PLD ASL and post-vasodilation DSC reduced by 13 ± 7% (p < 0.01) and 9 ± 5% (p < 0.01), respectively. For all regions, ATT correlated significantly with Tmax (R2 = 0.59, p < 0.01). Thus, revascularization improved CVR and decreased transit times. Multi-PLD ASL can serve as an effective and non-invasive modality to examine vascular hemodynamics in Moyamoya patients.
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Affiliation(s)
- Moss Y Zhao
- Department of Radiology, Stanford University, Stanford, CA, USA
| | - Rui Duarte Armindo
- Department of Radiology, Stanford University, Stanford, CA, USA
- Department of Neuroradiology, Hospital Beatriz Ângelo, Loures, Lisbon, Portugal
| | - Andrew J Gauden
- Department of Neurosurgery, Stanford University, Stanford, CA, USA
| | - Benjamin Yim
- Department of Neurosurgery, Stanford University, Stanford, CA, USA
| | - Elizabeth Tong
- Department of Radiology, Stanford University, Stanford, CA, USA
| | - Michael Moseley
- Department of Radiology, Stanford University, Stanford, CA, USA
| | - Gary K Steinberg
- Department of Neurosurgery, Stanford University, Stanford, CA, USA
| | - Greg Zaharchuk
- Department of Radiology, Stanford University, Stanford, CA, USA
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17
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Gonzalez NR, Amin-Hanjani S, Bang OY, Coffey C, Du R, Fierstra J, Fraser JF, Kuroda S, Tietjen GE, Yaghi S. Adult Moyamoya Disease and Syndrome: Current Perspectives and Future Directions: A Scientific Statement From the American Heart Association/American Stroke Association. Stroke 2023; 54:e465-e479. [PMID: 37609846 DOI: 10.1161/str.0000000000000443] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
Adult moyamoya disease and syndrome are rare disorders with significant morbidity and mortality. A writing group of experts was selected to conduct a literature search, summarize the current knowledge on the topic, and provide a road map for future investigation. The document presents an update in the definitions of moyamoya disease and syndrome, modern methods for diagnosis, and updated information on pathophysiology, epidemiology, and both medical and surgical treatment. Despite recent advancements, there are still many unresolved questions about moyamoya disease and syndrome, including lack of unified diagnostic criteria, reliable biomarkers, better understanding of the underlying pathophysiology, and stronger evidence for treatment guidelines. To advance progress in this area, it is crucial to acknowledge the limitations and weaknesses of current studies and explore new approaches, which are outlined in this scientific statement for future research strategies.
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18
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Xie A, Wang L, Song P, Liao M, Deng L, Zha J, Fan H, Wei W, Luo L. Predictive value of CT perfusion-derived parameters in Moyamoya disease. Clin Neurol Neurosurg 2023; 232:107869. [PMID: 37451090 DOI: 10.1016/j.clineuro.2023.107869] [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: 02/14/2023] [Revised: 06/13/2023] [Accepted: 06/28/2023] [Indexed: 07/18/2023]
Abstract
OBJECTIVE To explore the applicability of CT perfusion-derived parameters and collateral index in prediction of functional and clinical outcomes in patients with Moyamoya disease (MMD) who have not been treated surgically. METHODS All hemispheres were categorized into four groups: those with ischemic (IS) lesions, hemorrhagic (HE) lesions, subarachnoid hemorrhage (SAH) and normal hemisphere (NH). The clinical review included primary outcomes (whether a patient survived the cerebrovascular event) and secondary outcomes (the modified Rankin scale [mRS] and Katz-activity of daily living [ADL] scale). CTP-derived parameters of the frontal, temporal lobe and basal ganglia were calculated. Collateral index of the hypointensity ratio (HIR) was defined as a volume of Tmax >10 s/ Tmax >4 s. RESULTS Between December 2020 and December 2021, 21 MMD patients (15 bilateral cases and 6 unilateral cases, for a total of 36 hemispheres) were retrospectively included. Compared with the NH group, the IS group showed obviously abnormal hemodynamics. As for the primary outcomes, HIR showed an excellent area under the curve of 0.955 (95 % CI: 0.886-1.000, p < 0.001). Significant correlations were found between CTP-derived parameters and secondary outcomes. Furthermore, HIR was significantly correlated with mRS (r = 0.576, p = 0.001) and ADL scores (r = 0.644, p < 0.001). CONCLUSION Among different imaging types, IS hemispheres were characterized by distinct changes of hemodynamic parameters. Collateral index of HIR could be considered a clinically accessible and promising indictor of functional and clinical outcomes in MMD.
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Affiliation(s)
- Anming Xie
- Department of Radiology, The 908th Hospital of Chinese People's Liberation Army Joint Logistics Support Force, Nanchang, Jiangxi 330002, China
| | - Liuxian Wang
- Department of Radiology, The 908th Hospital of Chinese People's Liberation Army Joint Logistics Support Force, Nanchang, Jiangxi 330002, China
| | - Peiji Song
- Department of Radiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250013, China
| | - Ming Liao
- Department of Radiology, The 908th Hospital of Chinese People's Liberation Army Joint Logistics Support Force, Nanchang, Jiangxi 330002, China
| | - Lei Deng
- Department of Neurosurgery, The 908th Hospital of Chinese People's Liberation Army Joint Logistics Support Force, Nanchang, Jiangxi 330002, China
| | - Jing Zha
- Department of Radiology, The 908th Hospital of Chinese People's Liberation Army Joint Logistics Support Force, Nanchang, Jiangxi 330002, China
| | - Huagang Fan
- Department of Radiology, The 908th Hospital of Chinese People's Liberation Army Joint Logistics Support Force, Nanchang, Jiangxi 330002, China
| | - Wenfeng Wei
- Department of Radiology, The 908th Hospital of Chinese People's Liberation Army Joint Logistics Support Force, Nanchang, Jiangxi 330002, China
| | - Li Luo
- Department of Emergency, Jiangxi Provincial Children's Hospital, Nanchang, Jiangxi 330006, China.
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Seo YS, Lee S, Choi YH, Cho YJ, Lee SB, Cheon JE. Monitoring Posterior Cerebral Perfusion Changes With Dynamic Susceptibility Contrast-Enhanced Perfusion MRI After Anterior Revascularization Surgery in Pediatric Moyamoya Disease. Korean J Radiol 2023; 24:784-794. [PMID: 37500579 PMCID: PMC10400367 DOI: 10.3348/kjr.2023.0035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 05/31/2023] [Accepted: 06/12/2023] [Indexed: 07/29/2023] Open
Abstract
OBJECTIVE To determine whether dynamic susceptibility contrast-enhanced (DSC) perfusion magnetic resonance imaging (MRI) can be used to evaluate posterior cerebral circulation in pediatric patients with moyamoya disease (MMD) who underwent anterior revascularization. MATERIALS AND METHODS This study retrospectively included 73 patients with MMD who underwent DSC perfusion MRI (age, 12.2 ± 6.1 years) between January 2016 and December 2020, owing to recent-onset clinical symptoms during the follow-up period after completion of anterior revascularization. DSC perfusion images were analyzed using a dedicated software package (NordicICE; Nordic NeuroLab) for the middle cerebral artery (MCA), posterior cerebral artery (PCA), and posterior border zone between the two regions (PCA-MCA). Patients were divided into two groups; the PCA stenosis group included 30 patients with newly confirmed PCA involvement, while the no PCA stenosis group included 43 patients without PCA involvement. The relationship between DSC perfusion parameters and PCA stenosis, as well as the performance of the parameters in discriminating between groups, were analyzed. RESULTS In the PCA stenosis group, the mean follow-up duration was 5.3 years after anterior revascularization, and visual disturbances were a common symptom. Normalized cerebral blood volume was increased, and both the normalized time-to-peak (nTTP) and mean transit time values were significantly delayed in the PCA stenosis group compared with those in the no PCA stenosis group in the PCA and PCA-MCA border zones. TTPPCA (odds ratio [OR] = 6.745; 95% confidence interval [CI] = 2.665-17.074; P < 0.001) and CBVPCA-MCA (OR = 1.567; 95% CI = 1.021-2.406; P = 0.040) were independently associated with PCA stenosis. TTPPCA showed the highest receiver operating characteristic curve area in discriminating for PCA stenosis (0.895; 95% CI = 0.803-0.986). CONCLUSION nTTP can be used to effectively diagnose PCA stenosis. Therefore, DSC perfusion MRI may be a valuable tool for monitoring PCA stenosis in patients with MMD.
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Affiliation(s)
- Yun Seok Seo
- Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea
| | - Seunghyun Lee
- Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Radiology, Seoul National University College of Medicine, Seoul, Republic of Korea
- Innovative Medical Technology Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.
| | - Young Hun Choi
- Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Radiology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Yeon Jin Cho
- Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Radiology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Seul Bi Lee
- Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Radiology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jung-Eun Cheon
- Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Radiology, Seoul National University College of Medicine, Seoul, Republic of Korea
- Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea
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20
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Hu M, Yu J, Zhang J, Chen J. Designing a flow-controlled STA-MCA anastomosis based on the Hagen-Poiseuille law for preventing postoperative hyperperfusion in adult moyamoya disease. Ther Adv Chronic Dis 2023; 14:20406223231181492. [PMID: 37465163 PMCID: PMC10350771 DOI: 10.1177/20406223231181492] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 05/25/2023] [Indexed: 07/20/2023] Open
Abstract
Background Technical improvements for preventing postoperative symptomatic cerebral hyperperfusion (CHP) during superficial temporal artery-middle cerebral artery (STA-MCA) anastomosis for moyamoya disease (MMD) were seldom reported. Objectives The aim of this study was to investigate the significance of application of a novel flow-controlled concept which voluntarily reduces the hemodynamic difference between the donor and recipient arteries based on the Hagen-Poiseuille law when performing direct anastomoses of recipient parasylvian cortical arteries (PSCAs) with anterograde hemodynamic sources from the MCA (M-PSCAs) in adult MMD. Design This was a retrospective observational study. Methods Direct anastomoses of recipient M-PSCAs were performed on 89 symptomatic hemispheres in 82 adult MMD patients in our hospital from January 2020 to June 2021. They were divided into the flow-controlled group (patients who received direct anastomosis under designed flow-controlled principles) and non-flow-controlled group (patients who received conventional direct anastomosis to obtain maximum flow). The patients' basic characteristics and incidence of postoperative CHP were compared between the two groups. Risk factors for occurrence of postoperative CHP were analyzed. Results Overall, 36 hemispheres were included in the non-flow-controlled group and 53 in flow-controlled group. The incidences of postoperative focal (22.6%) and symptomatic CHP (5.7%) in the flow-controlled group were significantly lower than those (focal, 52.8%; symptomatic, 25.0%) in the non-flow-controlled group (p = 0.003 and 0.009, respectively). Multivariate analysis revealed that the flow-controlled concept was significantly associated with the development of focal (p = 0.005) and symptomatic (p = 0.012) CHP. Conclusion The flow-controlled STA-MCA anastomosis can significantly decrease the incidence of postoperative CHP during direct anastomoses of recipient M-PSCAs in adult MMD.
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Affiliation(s)
- Miao Hu
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jin Yu
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jianjian Zhang
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430071, China
| | - Jincao Chen
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430071, China
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Filimonova E, Martirosyan A, Ovsiannikov K, Pashkov A, Rzaev J. White and Gray Matter Perfusion in Children with Moyamoya Angiopathy after Revascularization Surgery. Pediatr Neurosurg 2023; 58:197-205. [PMID: 37379805 DOI: 10.1159/000531719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 06/22/2023] [Indexed: 06/30/2023]
Abstract
INTRODUCTION Surgical revascularization is very effective in patients with moyamoya angiopathy (MMA) and leads to improvements in cortical perfusion parameters. However, changes in white matter hemodynamics are still underestimated. To date, only a few studies have examined brain perfusion changes within deep white matter after bypass surgery in patients with MMA. METHODS Ten children with MMA were evaluated using the CT perfusion technique before and after revascularization surgery. Brain perfusion parameters within gray and white matter were compared before and after surgery. The correlations between the perfusion parameters before surgery and the Suzuki stage, as well as between the perfusion parameters and the cognitive scores, were also evaluated. RESULTS Brain perfusion parameters improved significantly in both gray matter (predominantly due to cerebral blood flow within the anterior circulation, p < 0.01) and white matter (predominantly due to cerebral blood volume within the semiovale centrum, p < 0.001). We revealed that the pattern of improvement in perfusion in white matter differed from the pattern of improvement in perfusion in gray matter. Significant correlations were revealed between the Suzuki stage before surgery and the perfusion parameters within the posterior cerebral artery circulation (adjusted p < 0.05). There were also significant correlations between cognitive scores and brain perfusion parameters in gray matter and white matter (adjusted p < 0.05). CONCLUSIONS The perfusion parameters of gray matter and white matter in the brain improve differently after bypass surgery in patients with MMA. Different hemodynamics within these compartments could explain this.
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Affiliation(s)
- Elena Filimonova
- Federal Center of Neurosurgery Novosibirsk, Nemirovich-Danchenko Str. 132/1, Novosibirsk, Russian Federation
- Department of neurosurgery, Novosibirsk State Medical University, Novosibirsk, Russian Federation
| | - Azniv Martirosyan
- Federal Center of Neurosurgery Novosibirsk, Nemirovich-Danchenko Str. 132/1, Novosibirsk, Russian Federation
| | - Konstantin Ovsiannikov
- Federal Center of Neurosurgery Novosibirsk, Nemirovich-Danchenko Str. 132/1, Novosibirsk, Russian Federation
- Department of Neuroscience, Institute of Medicine and Psychology, Novosibirsk State University, Pirogov Str. 1, Novosibirsk, Russian Federation
| | - Anton Pashkov
- Federal Center of Neurosurgery Novosibirsk, Nemirovich-Danchenko Str. 132/1, Novosibirsk, Russian Federation
- Department of Clinical Psychology, Lab of molecular and genetic studies, South Ural State University, Chelyabinsk, Russian Federation
| | - Jamil Rzaev
- Federal Center of Neurosurgery Novosibirsk, Nemirovich-Danchenko Str. 132/1, Novosibirsk, Russian Federation
- Department of neurosurgery, Novosibirsk State Medical University, Novosibirsk, Russian Federation
- Department of Neuroscience, Institute of Medicine and Psychology, Novosibirsk State University, Pirogov Str. 1, Novosibirsk, Russian Federation
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Lin J, Wu Y, Deng X, Zhou S, Liu Y, Zhang J, Zeng Y, Li X, Gao X, Xu B, Zhou C. Application of intraoperative infrared thermography in bypass surgery for adult moyamoya syndrome: A preliminary study. Front Neurol 2023; 14:1174072. [PMID: 37064202 PMCID: PMC10098335 DOI: 10.3389/fneur.2023.1174072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 03/14/2023] [Indexed: 04/01/2023] Open
Abstract
Background and objectivesCerebral revascularization surgery is the mainstay of treatment for moyamoya syndrome (MMS) today, and intraoperative determination of the patency of the revascularized vessel is a critical factor in the success of the procedure. Currently, major imaging modalities include intraoperative indocyanine green (ICG) videoangiography (ICG-VA), digital subtraction angiography (DSA), and vascular ultrasound Doppler. Infrared thermography is a modern imaging modality with non-contact devices for the acquisition and analysis of thermal data. We aimed to investigate the feasibility and advantages of infrared thermography in determining anastomotic patency during MMS surgery.MethodsIndocyanine green videoangiography and infrared thermography were performed simultaneously in 21 patients with MMS who underwent bypass surgery. The detection result of vessel patency was compared, and the feasibility and advantages of infrared thermography were assessed.ResultsThe patency of the anastomosis was accurately determined in 21 patients using either ICG angiography or infrared thermography. In 20 patients, the results of infrared thermography showed that the vascular anastomosis was unobstructed, and there was an agreement with the subsequent results of ICG-VA. In one patient, we suspected inadequate patency after testing the anastomosis with infrared thermography, and the results of ICG-VA evaluation of the anastomosis confirmed that there was indeed an anastomotic obstruction.ConclusionCompared with ICG-VA, infrared thermography might offer an alternative non-invasive, contrast-free option in assessing anastomosis patency compared with ICG-VA, and it is likely to become more widely used in the clinic in the near future.
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Affiliation(s)
- Jinghui Lin
- Department of Neurosurgery, Ningbo First Hospital, Ningbo University, Ningbo, Zhejiang, China
| | - Yiwen Wu
- Department of Neurosurgery, Ningbo First Hospital, Ningbo University, Ningbo, Zhejiang, China
| | - Xinpeng Deng
- Department of Neurosurgery, Ningbo First Hospital, Ningbo University, Ningbo, Zhejiang, China
| | - Shengjun Zhou
- Department of Neurosurgery, Ningbo First Hospital, Ningbo University, Ningbo, Zhejiang, China
| | - Yuchun Liu
- Department of Neurosurgery, Ningbo First Hospital, Ningbo University, Ningbo, Zhejiang, China
| | - Junjun Zhang
- Department of Neurosurgery, Ningbo First Hospital, Ningbo University, Ningbo, Zhejiang, China
| | - Yiyong Zeng
- Department of Neurosurgery, Ningbo First Hospital, Ningbo University, Ningbo, Zhejiang, China
| | - Xianru Li
- Department of Neurosurgery, Ningbo First Hospital, Ningbo University, Ningbo, Zhejiang, China
| | - Xiang Gao
- Department of Neurosurgery, Ningbo First Hospital, Ningbo University, Ningbo, Zhejiang, China
- Xiang Gao,
| | - Bin Xu
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
- Bin Xu,
| | - Chenhui Zhou
- Department of Neurosurgery, Ningbo First Hospital, Ningbo University, Ningbo, Zhejiang, China
- *Correspondence: Chenhui Zhou,
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Rossi J, Hermier M, Eker OF, Berthezene Y, Bani-Sadr A. Etiologies of spontaneous acute intracerebral hemorrhage: A pictorial review. Clin Imaging 2023; 95:10-23. [PMID: 36577316 DOI: 10.1016/j.clinimag.2022.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/26/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022]
Abstract
Spontaneous acute intracerebral hemorrhage (SAIH) is a common and life-threatening condition that affects more than three million patients each year. Of these, one in three patients die within one month of onset and the remaining two in three patients have varying degrees of disability and neurological impairment. The role of radiology is paramount in optimizing patient outcomes by diagnosing SAIH, its potential complications, and the most likely etiology. While the positive diagnosis of SAIH is straightforward, the etiologic diagnosis is broad, covering primary SAIH (hypertension, cerebral amyloid angiopathy) and secondary SAIH (vascular malformations, nonatheromatous vasculopathies, neoplasia, coagulation disorders, toxicants). This pictorial review illustrates the imaging of spontaneous SAIH with an emphasis on etiologic workup.
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Affiliation(s)
- Julien Rossi
- Department of Neuroradiology, East Group Hospital, Hospices Civils de Lyon, 59 Bd Pinel, 69500 Bron, France
| | - Marc Hermier
- Department of Neuroradiology, East Group Hospital, Hospices Civils de Lyon, 59 Bd Pinel, 69500 Bron, France
| | - Omer Faruk Eker
- Department of Neuroradiology, East Group Hospital, Hospices Civils de Lyon, 59 Bd Pinel, 69500 Bron, France
| | - Yves Berthezene
- Department of Neuroradiology, East Group Hospital, Hospices Civils de Lyon, 59 Bd Pinel, 69500 Bron, France; CREATIS Laboratory, CNRS UMR 5220, INSERM U 5220, Claude Bernard Lyon I University, 7 avenue Jean Capelle O, 69100 Villeurbanne, France
| | - Alexandre Bani-Sadr
- Department of Neuroradiology, East Group Hospital, Hospices Civils de Lyon, 59 Bd Pinel, 69500 Bron, France; CREATIS Laboratory, CNRS UMR 5220, INSERM U 5220, Claude Bernard Lyon I University, 7 avenue Jean Capelle O, 69100 Villeurbanne, France.
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Muacevic A, Adler JR, Rangasami R. Fascinating Case Presentation of Moyamoya Disease in Children and Adults. Cureus 2023; 15:e34081. [PMID: 36843764 PMCID: PMC9946924 DOI: 10.7759/cureus.34081] [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] [Accepted: 01/23/2023] [Indexed: 01/24/2023] Open
Abstract
Moyamoya disease is a rare idiopathic disease characterized by progressive stenosis and collateral development of the distal internal carotid arteries. It is mainly seen in East Asia and is the most common cause of stroke in Asian children. However, it is rare in the Indian subcontinent. We present three exciting cases of moyamoya disease with varied clinical presentations in one pediatric, one young adult, and one older patient.
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Affiliation(s)
- Alexander Muacevic
- Radiology, Sri Ramachandra Institute of Higher Education and Research, Chennai, IND
| | - John R Adler
- Radiology, Sri Ramachandra Institute of Higher Education and Research, Chennai, IND
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Gan L, Yin X, Huang J, Jia B. Transcranial Doppler analysis based on computer and artificial intelligence for acute cerebrovascular disease. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2023; 20:1695-1715. [PMID: 36899504 DOI: 10.3934/mbe.2023077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Cerebrovascular disease refers to damage to brain tissue caused by impaired intracranial blood circulation. It usually presents clinically as an acute nonfatal event and is characterized by high morbidity, disability, and mortality. Transcranial Doppler (TCD) ultrasonography is a non-invasive method for the diagnosis of cerebrovascular disease that uses the Doppler effect to detect the hemodynamic and physiological parameters of the major intracranial basilar arteries. It can provide important hemodynamic information that cannot be measured by other diagnostic imaging techniques for cerebrovascular disease. And the result parameters of TCD ultrasonography such as blood flow velocity and beat index can reflect the type of cerebrovascular disease and serve as a basis to assist physicians in the treatment of cerebrovascular diseases. Artificial intelligence (AI) is a branch of computer science which is used in a wide range of applications in agriculture, communications, medicine, finance, and other fields. In recent years, there are much research devoted to the application of AI to TCD. The review and summary of related technologies is an important work to promote the development of this field, which can provide an intuitive technical summary for future researchers. In this paper, we first review the development, principles, and applications of TCD ultrasonography and other related knowledge, and briefly introduce the development of AI in the field of medicine and emergency medicine. Finally, we summarize in detail the applications and advantages of AI technology in TCD ultrasonography including the establishment of an examination system combining brain computer interface (BCI) and TCD ultrasonography, the classification and noise cancellation of TCD ultrasonography signals using AI algorithms, and the use of intelligent robots to assist physicians in TCD ultrasonography and discuss the prospects for the development of AI in TCD ultrasonography.
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Affiliation(s)
- Lingli Gan
- Department of Neurology, Chongqing General Hospital, Chongqing 401147, China
| | - Xiaoling Yin
- Department of Neurosurgery, Chongqing General Hospital, Chongqing 401147, China
| | - Jiating Huang
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong, China
| | - Bin Jia
- Department of Neurosurgery, Chongqing General Hospital, Chongqing 401147, China
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Neuroimaging in Moyamoya angiopathy: Updated review. Clin Neurol Neurosurg 2022; 222:107471. [DOI: 10.1016/j.clineuro.2022.107471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/07/2022] [Accepted: 10/10/2022] [Indexed: 11/23/2022]
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Li X, Ma M, Liu R, Yang Y, Yue W. Three Cases of Familial Moyamoya Disease with RASA1 Mutations-A Case Report. World Neurosurg 2022; 167:e972-e977. [PMID: 36064119 DOI: 10.1016/j.wneu.2022.08.118] [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: 07/06/2022] [Revised: 08/24/2022] [Accepted: 08/25/2022] [Indexed: 11/24/2022]
Abstract
OBJECTIVE The prevalence of moyamoya disease (MMD) is relatively high in East Asia, whereas the susceptibility genes of MMD have not been identified. METHODS Here, we reported 3 patients diagnosed with MMD from 1 single family, including a 53-year-old mother (case 1) and her 32-year-old and 29-year-old daughters (cases 2 and 3). The younger daughter was diagnosed with cerebral hemorrhage. Computed tomographic angiogram showed the typical signs of MMD in 3 patients. RESULTS Clinical whole-exome sequencing was performed in 3 daughters of case 1, and RASA1 mutations in chr5: 87,376,389 and NM_002890.2: c.2012-4C > T were determined to have the strongest correlation with MMD. RASA1 mutations were verified in case 1, husband of case 1 and the descendant of case 3 by using Sanger sequencing. CONCLUSIONS According to the findings of literature review, this is the first study indicating the association between RASA1 mutations and MMD.
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Affiliation(s)
- Xun Li
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China
| | - Miaomiao Ma
- Department of Dermatology, Tianjin Medical University General Hospital, Tianjin, China
| | - Ran Liu
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China
| | - Yun Yang
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China
| | - Wei Yue
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China.
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Waddle S, Garza M, Davis LT, Chitale R, Fusco M, Lee C, Patel NJ, Kang H, Jordan LC, Donahue MJ. Editorial for "Pre-Surgical Magnetic Resonance Imaging Indicators of Revascularization Response in Adults With Moyamoya Vasculopathy". J Magn Reson Imaging 2022; 56:995-996. [PMID: 35297129 PMCID: PMC9481650 DOI: 10.1002/jmri.28153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 01/22/2022] [Indexed: 11/08/2022] Open
Abstract
Background: Moyamoya is a progressive intracranial vasculopathy, primarily affecting distal segments of the internal carotid and middle cerebral arteries. Treatment may comprise angiogenesis-inducing surgical revascularization, however lack of randomized trials often results in subjective treatment decisions. Hypothesis: Compensatory pre-surgical posterior vertebrobasilar (VBA) flow-territory reactivity, including greater cerebrovascular reactivity and reduced vascular delay time, portends greater neoangiogenic response verified on digital subtraction angiography (DSA) at one-year follow-up. Study Type: Prospective intervention cohort. Subjects: 31 patients with moyamoya (26 female; age=45±13 years; 41 revascularized hemispheres). Methods: Anatomical MRI, hypercapnic cerebrovascular reactivity MRI, and DSA acquired pre-surgically in adult moyamoya participants scheduled for clinically-indicated surgical revascularization. One year post-surgery, DSA was repeated to evaluate collateralization. Field Strength: 3 Tesla. Sequence: Hypercapnic T 2*-weighted gradient-echo blood-oxygenation-level-dependent, T 2-weighted turbo-spin-echo fluid-attenuated-inversion-recovery, T 1-weighted magnetization-prepared-rapid-gradient-echo, and T 2-weighted diffusion-weighted imaging. Assessment: Pre-surgical maximum cerebrovascular reactivity and response times were evaluated in VBA flow-territories. Revascularization success was determined using an ordinal scoring system of neoangiogenic collateralization from post-surgical DSA by two cerebrovascular neurosurgeons (RVC; experience=8 years; MRF, experience=9 years) and one neuroradiologist (LTD, experience=8 years). Stroke risk factors (age, sex, race, vasculopathy, and diabetes) were recorded. Statistical Tests: Fisher’s exact and Wilcoxon rank-sum tests were applied to compare pre-surgical variables between cohorts with angiographically-confirmed good (>1/3 MCA territory revascularized) vs. poor (<1/3 MCA territory revascularized) outcomes. Significance: two-sided p<0.05. Normalized odds ratios (OR) were calculated. Results: Criteria for good collateralization were met in 25 of 41 revascularized hemispheres. Pre-surgical normalized VBA flow-territory cerebrovascular reactivity was significantly higher in those with good (1.12±0.13 unitless) vs. poor (1.04±0.05 unitless) outcomes. Younger (OR=−0.60±0.67) and White (OR=−1.81±1.40) participants had highest revascularization success (good outcomes: age=42±14 years, race=84% White; poor outcomes: age=49±11 years, race=44% White). Data Conclusion: Pre-surgical MRI-measures of VBA flow-territory cerebrovascular reactivity are highest in moyamoya participants with better angiographic responses to surgical revascularization.
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Affiliation(s)
- Spencer Waddle
- Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Maria Garza
- Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Larry T. Davis
- Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Rohan Chitale
- Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Neurosurgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Matthew Fusco
- Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Neurosurgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Chelsea Lee
- Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Pediatrics, Division of Pediatric Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Niral J. Patel
- Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Pediatrics, Division of Pediatric Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Hakmook Kang
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Lori C. Jordan
- Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Pediatrics, Division of Pediatric Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Manus J. Donahue
- Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Psychiatry and Behavioral Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
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Muacevic A, Adler JR. Does Advanced Imaging Aid in the Preoperative Evaluation of Patients With Moyamoya Disease? Cureus 2022; 14:e29816. [PMID: 36337792 PMCID: PMC9622031 DOI: 10.7759/cureus.29816] [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] [Accepted: 08/10/2022] [Indexed: 12/04/2022] Open
Abstract
Background Moyamoya disease is characterized by progressive nonatherosclerotic stenosis and eventual occlusion of the supraclinoid cerebral arteries with the associated development of abnormal collateral vessels. Treatment of moyamoya disease revolves around restoring cerebral blood flow (CBF) distal to the steno-occlusive disease. Numerous modalities can be used to assess hemodynamic parameters. We sought to determine the impact of preoperative imaging on surgical decision-making. Methods A retrospective review was performed of all patients seen with the diagnosis of moyamoya. Patients were grouped on presentation based on CT/MRI findings of infarction, hemorrhage, or normal. Patients who did not have all of the preoperative tests were excluded. Preoperative radiological results were dichotomized as either normal or abnormal. Results During a five-year period, 34 patients with moyamoya met the inclusion criteria. All patients had an abnormal magnetic resonance angiography (MRA) Non-invasive Optimal Vessel Analysis (NOVA; VasSol, Inc, River Forest, IL). Three patients had normal initial MRI. All symptomatic patients had abnormal preoperative workup and underwent revascularization, as all were found to have abnormal single photon emission computed tomography (SPECT). The only occasion where the decision for surgery or type of surgery was influenced by imaging findings was in patients with nonclassical or minimal symptoms. Conclusion Although hemodynamic imaging studies can aid in establishing a preoperative baseline of CBF and cerebral vascular reserve (CVR) for follow-up studies, the true implication of these tests in the preoperative evaluation of clearly symptomatic moyamoya patients is debatable. In asymptomatic/mildly symptomatic patients, hemodynamic studies are necessary to determine the need for treatment. For symptomatic patients, surgery can be performed without an exhaustive and costly preoperative hemodynamic evaluation.
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Yedavalli VS, Quon JL, Tong E, van Staalduinen EK, Mouches P, Kim LH, Steinberg GK, Grant GA, Yeom KW, Forkert ND. Intracranial Artery Morphology in Pediatric Moya Moya Disease and Moya Moya Syndrome. Neurosurgery 2022; 91:710-716. [PMID: 36084178 DOI: 10.1227/neu.0000000000002099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 06/05/2022] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Moya Moya disease (MMD) and Moya Moya syndrome (MMS) are cerebrovascular disorders, which affect the internal carotid arteries (ICAs). Diagnosis and surveillance of MMD/MMS in children mostly rely on qualitative evaluation of vascular imaging, especially MR angiography (MRA). OBJECTIVE To quantitatively characterize arterial differences in pediatric patients with MMD/MMS compared with normal controls. METHODS MRA data sets from 17 presurgery MMD/MMS (10M/7F, mean age = 10.0 years) patients were retrospectively collected and compared with MRA data sets of 98 children with normal vessel morphology (49 male patients; mean age = 10.6 years). Using a level set segmentation method with anisotropic energy weights, the cerebral arteries were automatically extracted and used to compute the radius of the ICA, middle cerebral artery (MCA), anterior cerebral artery (ACA), posterior cerebral artery (PCA), and basilar artery (BA). Moreover, the density and the average radius of all arteries in the MCA, ACA, and PCA flow territories were quantified. RESULTS Statistical analysis revealed significant differences comparing children with MMD/MMS and those with normal vasculature (P < .001), whereas post hoc analyses identified significantly smaller radii of the ICA, MCA-M1, MCA-M2, and ACA (P < .001) in the MMD/MMS group. No significant differences were found for the radii of the PCA and BA or any artery density and average artery radius measurement in the flow territories (P > .05). CONCLUSION His study describes the results of an automatic approach for quantitative characterization of the cerebrovascular system in patients with MMD/MMS with promising preliminary results for quantitative surveillance in pediatric MMD/MMS management.
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Affiliation(s)
- Vivek S Yedavalli
- Department of Radiology and Radiological Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Jennifer L Quon
- Department of Neurosurgery, Stanford University School of Medicine, Palo Alto, California, USA
| | - Elizabeth Tong
- Department of Radiology, Stanford University School of Medicine, Palo Alto, California, USA
| | - Eric K van Staalduinen
- Department of Radiology, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Pauline Mouches
- Department of Radiology, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Lily H Kim
- Department of Neurosurgery, Stanford University School of Medicine, Palo Alto, California, USA
| | - Gary K Steinberg
- Department of Neurosurgery, Stanford University School of Medicine, Palo Alto, California, USA
| | - Gerald A Grant
- Department of Neurosurgery, Stanford University School of Medicine, Palo Alto, California, USA
| | - Kristen W Yeom
- Department of Radiology, Stanford University School of Medicine, Palo Alto, California, USA
| | - Nils D Forkert
- Department of Radiology, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
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Li J, Zhang Y, Yin D, Shang H, Li K, Jiao T, Fang C, Cui Y, Liu M, Pan J, Zeng Q. CT perfusion-based delta-radiomics models to identify collateral vessel formation after revascularization in patients with moyamoya disease. Front Neurosci 2022; 16:974096. [PMID: 36033623 PMCID: PMC9403315 DOI: 10.3389/fnins.2022.974096] [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: 06/20/2022] [Accepted: 07/20/2022] [Indexed: 11/15/2022] Open
Abstract
Purpose To build CT perfusion (CTP)-based delta-radiomics models to identify collateral vessel formation after revascularization in patients with moyamoya disease (MMD). Methods Fifty-three MMD patients who underwent CTP and digital subtraction angiography (DSA) examination were retrospectively enrolled. Patients were divided into good and poor groups based on postoperative DSA. CTP parameters, such as mean transit time (MTT), time to drain (TTD), time to maximal plasma concentration (Tmax), and flow extraction product (FE), were obtained. CTP efficacy in evaluating surgical treatment were compared between the good and poor groups. The changes in the relative CTP parameters (ΔrMTT, ΔrTTD, ΔrTmax, and ΔrFE) were calculated to evaluate the differences between pre- and postoperative CTP values. CTP parameters were selected to build delta-radiomics models for identifying collateral vessel formation. The identification performance of machine learning classifiers was assessed using area under the receiver operating characteristic curve (AUC). Results Of the 53 patients, 36 (67.9%) and 17 (32.1%) were divided into the good and poor groups, respectively. The postoperative changes of ΔrMTT, ΔrTTD, ΔrTmax, and ΔrFE in the good group were significantly better than the poor group (p < 0.05). Among all CTP parameters in the perfusion improvement evaluation, the ΔrTTD had the largest AUC (0.873). Eleven features were selected from the TTD parameter to build the delta-radiomics model. The classifiers of the support vector machine and k-nearest neighbors showed good diagnostic performance with AUC values of 0.933 and 0.867, respectively. Conclusion The TTD-based delta-radiomics model has the potential to identify collateral vessel formation after the operation.
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Affiliation(s)
- Jizhen Li
- Department of Radiology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
- Department of Radiology, Shandong Mental Health Center Affiliated to Shandong University, Jinan, China
| | - Yan Zhang
- Department of Radiology, Shandong Mental Health Center Affiliated to Shandong University, Jinan, China
| | - Di Yin
- Department of Radiology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Hui Shang
- Department of Radiology, The First Affiliated Hospital of Shandong First Medical University, Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Kejian Li
- Department of Radiology, The First Affiliated Hospital of Shandong First Medical University, Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Tianyu Jiao
- Department of Radiology, The First Affiliated Hospital of Shandong First Medical University, Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Caiyun Fang
- Department of Radiology, The First Affiliated Hospital of Shandong First Medical University, Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Yi Cui
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, China
| | - Ming Liu
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, China
| | - Jun Pan
- Department of Radiology, Shandong Mental Health Center Affiliated to Shandong University, Jinan, China
| | - Qingshi Zeng
- Department of Radiology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
- Department of Radiology, The First Affiliated Hospital of Shandong First Medical University, Shandong Provincial Qianfoshan Hospital, Jinan, China
- *Correspondence: Qingshi Zeng,
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Figueiro Longo MG, Jaimes C, Machado F, Delgado J, Gee MS. Pediatric Emergency MRI. Magn Reson Imaging Clin N Am 2022; 30:533-552. [PMID: 35995478 DOI: 10.1016/j.mric.2022.05.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
There is an overall increase in the use of imaging in the pediatric emergency room setting, which is accompanied by a reduction in computed tomography examinations performed mainly due to the increased awareness of the risks of ionizing radiation. Advances in MRI technology have led to shortened scan time, decreased motion sensitivity, and improved spatial resolution. With increased access to MRI in the emergency room setting, the goal of this article is to review major applications of MR in pediatric emergency room patients.
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Affiliation(s)
- Maria Gabriela Figueiro Longo
- Division of Pediatric Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, MA 02114, USA.
| | - Camilo Jaimes
- Department of Radiology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA
| | - Fedel Machado
- Department of Radiology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA
| | - Jorge Delgado
- Division of MSK Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, MA 02114, USA
| | - Michael S Gee
- Division of Pediatric Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, MA 02114, USA
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Construction of Diagnosis Model of Moyamoya Disease Based on Convolution Neural Network Algorithm. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:4007925. [PMID: 35924108 PMCID: PMC9343212 DOI: 10.1155/2022/4007925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/03/2022] [Accepted: 06/30/2022] [Indexed: 11/17/2022]
Abstract
Objective The convolutional neural network (CNN) was used to improve the accuracy of digital subtraction angiography (DSA) in diagnosing moyamoya disease (MMD), providing a new method for clinical diagnosis of MMD. Methods A total of 40 diagnosed with MMD by DSA in the neurosurgery department of our hospital were included. At the same time, 40 age-matched and sex-matched patients were selected as the control group. The 80 included patients were divided into training set (n = 56) and validation set (n = 24). The DSA image was preprocessed, and the CNN was used to extract features from the preprocessed image. The precision and accuracy of the preprocessed image results were evaluated. Results There was no significant difference in baseline data between the training set and validation set (P > 0.05). The precision and accuracy of the images before processing were 79.68% and 81.45%, respectively. After image processing, the precision and accuracy of the model are 96.38% and 97.59%, respectively. The area under the curve of the CNN algorithm model was 0.813 (95% CI: 0.718-0.826). Conclusion This diagnostic method based on CNN performs well in MMD detection.
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Malone M, Ritchie D. The Mystery of a Unilateral Headache Ultimately Diagnosed as Moyamoya Disease. Cureus 2022; 14:e26816. [PMID: 35971361 PMCID: PMC9374177 DOI: 10.7759/cureus.26816] [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] [Accepted: 07/12/2022] [Indexed: 11/05/2022] Open
Abstract
Moyamoya disease (MMD) is a rare chronic cerebrovascular occlusive disease characterized by progressive stenosis or occlusion of the intracranial internal carotid arteries and their proximal branches, with subsequent abnormally formed collateral vessels. Moyamoya disease is typically found in children of East Asian descent and is the most common pediatric cerebrovascular pathology in East Asian populations. However, moyamoya disease can be present without any predisposing factors, and this is what distinguishes the disease from the syndrome. Moyamoya syndrome is typically associated with other conditions such as sickle cell disease or neurofibromatosis. The syndrome can also be seen in patients who have had exposure to cervical or neck radiation. We present a rare case of an adult Peruvian woman who initially presented with a severe right hemispherical headache, which was ultimately diagnosed as MMD. This report and the discussion aim to provide more understanding of moyamoya disease and how it can be incidentally discovered in an unsuspected patient without any predisposing factors. The fact that the patient lacked any predisposing factors makes moyamoya disease, and not the syndrome, the diagnosis. Currently available treatments are limited. One specialized therapeutic approach is a procedure called encephaloduroarteriosynangiosis (EDAS), which aims to involve the transposition of a segment of a scalp artery onto the surface of the brain to permit the additional formation of collateral arteries. We aim to highlight the management and treatment of a case of moyamoya presenting as a severe right hemispherical headache in a patient without any predisposing factors.
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Guo Y, Xia W, Peng X, Shao J. Almost misdiagnosed Menkes disease: A case report. Heliyon 2022; 8:e09268. [PMID: 35464712 PMCID: PMC9026563 DOI: 10.1016/j.heliyon.2022.e09268] [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: 11/09/2021] [Revised: 01/06/2022] [Accepted: 04/07/2022] [Indexed: 11/30/2022] Open
Abstract
Background Menkes disease is a disorder of copper metabolism and which follows a progressive degeneration of brain. It is a rare X-linked recessive disorder that results from mutations in ATP7A gene. The early diagnosis of Menkes disease is critical to patients’ prognosis. Case presentation We report a case of Menkes disease. A 4-month-old boy presented with intermittent convulsions for a week. The brain MRI showed excessive tortuosities of intracranial vessels, and radiologists prompted for further examinations to confirm that it was Menkes disease. Patient was advised for biochemical investigations and genetic tests. Reduced level of ceruloplasmin (0.04 g/L; normal range, 0.2–0.6 g/L) was revealed. Genetic testing revealed a missense mutation within exon 18, c.3548 G > A, p.G1183D. This patient was almost misdiagnosed as epilepsy. Fortunately, based on the clues from radiologist, further physical examination and experimental tests were carried out. Conclusion We reported the imaging features of a case of Menkes disease, which can provide clinicians with more clues to consider the possibility of this rare disease.
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Joo B, Kim J, Hwang JK, Shim KW, Lee SK. Salvage multiple burr hole surgery in patients with Moyamoya disease: efficacy evaluation using probabilistic independent component analysis of dynamic susceptibility contrast perfusion MRI. Neuroradiology 2022; 64:1737-1745. [PMID: 35237848 DOI: 10.1007/s00234-022-02909-w] [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: 10/04/2021] [Accepted: 01/25/2022] [Indexed: 11/26/2022]
Abstract
PURPOSE Multiple burr hole surgery is considered to be an option for achieving indirect revascularization in patients with ischemic Moyamoya disease (MMD). We aimed to investigate the efficacy of stand-alone multiple burr hole surgery for salvage revascularization in patients with MMD by assessing the hemodynamic changes via normalized time-to-peak (nTTP) analysis and independent component analysis (ICA) of preoperative and postoperative dynamic susceptibility contrast (DSC) perfusion MRI data. METHODS The DSC perfusion MRI data of 25 hemispheres from 21 patients with MMD, who underwent multiple burr hole surgery for salvage revascularization due to persistent or recurrent symptoms after primary revascularization with modified encephaloduroarteriosynangiosis (mEDAS), were analyzed. The nTTP, which was measured using the region of interests covering the entire surgical hemisphere, was compared between the preoperative and postoperative images. ICA was used to compare the relative arterial and venous components of the surgical hemispheres between the respective preoperative and postoperative images. RESULTS The median postoperative nTTP (1.80 s) was significantly shorter than the median preoperative nTTP (4.10 s) (P < 0.001). The postoperative relative arterial component of the surgical hemisphere (median: 0.04) was significantly higher than the preoperative relative arterial component (median: - 0.02, P < 0.001). In contrast, the postoperative relative venous component of the surgical hemisphere (median: - 0.05) was significantly lower than the preoperative value (median: 0.05, P < 0.001). CONCLUSION The improvement in cerebral perfusion parameters observed on postoperative DSC perfusion MRI demonstrated that stand-alone multiple burr hole surgery could be a favorable salvage revascularization technique after mEDAS failure in patients with ischemic MMD.
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Affiliation(s)
- Bio Joo
- Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jinna Kim
- Department of Radiology, Research Institute of Radiological Science and Center for Clinical Image Data Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, Korea.
| | - Jun Kyu Hwang
- Department of Neurosurgery, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Gyeonggi-do, Korea
| | - Kyu-Won Shim
- Department of Pediatric Neurosurgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Seung-Koo Lee
- Department of Radiology, Research Institute of Radiological Science and Center for Clinical Image Data Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, Korea
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Miranda Bautista J, Garrido Morro I, Fernández García P, Herrera Herrera I. Hiperintensidad en secuencia FLAIR del LCR en el espacio subaracnoideo: diagnósticos diferenciales. RADIOLOGIA 2022. [DOI: 10.1016/j.rx.2022.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Li J, Li X, Wang L, Wu G. Spinal Muscular Atrophy Type IIIb Complicated by Moyamoya Syndrome: A Case Report and Literature Review. Front Cell Neurosci 2022; 16:811596. [PMID: 35177965 PMCID: PMC8843837 DOI: 10.3389/fncel.2022.811596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 01/11/2022] [Indexed: 12/02/2022] Open
Abstract
Spinal muscular atrophy (SMA) is an inherited disorder characterized by degeneration of motor neurons and symmetrical muscle weakness and atrophy. Moyamoya syndrome (MMS) or moyamoya disease (MMD) is radiologically defined by chronic cerebrovascular occlusion with abnormal vascular network formation in the skull base. We report herein a 21-year-old female patient with limb weakness and muscular atrophy for 17 years. Electromyography revealed extensive motor neuron damage. Cranial MRA showed occlusion of bilateral anterior and middle cerebral arteries, with increased peripheral blood vessels and collateral circulation. She was diagnosed as SMA type IIIb combined with MMS following genetic testing, in which homozygous deletion of exons 7 and 8 of survival motor neuron (SMN)1 gene and 3 copies of exons 7 and 8 of SMN2 gene were detected. After treatment, the patient's symptoms improved. Our study found that the rare SMA and MMS co-exist. We speculated that the moyamoya phenomenon may be related to the abnormal regulation of intracranial vascular endothelial cells and smooth muscle cells in proliferation and differentiation caused by functional defects of SMN protein. The relationship between the two diseases needs to be further elucidated in future clinical work.
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Oomori D, Kubo Y, Yabuki M, Kitakami K, Fujiwara S, Yoshida K, Kobayashi M, Terasaki K, Ogasawara K. Angiographic disease progression in medically treated adult patients with ischemic moyamoya disease without cerebral misery perfusion: supplementary analysis of a 5-year prospective cohort. Neurosurg Rev 2021; 45:1553-1561. [PMID: 34689243 DOI: 10.1007/s10143-021-01677-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/02/2021] [Accepted: 10/20/2021] [Indexed: 10/20/2022]
Abstract
Angiographic disease progression reportedly develops in adult moyamoya disease (MMD). However, more than half of patients analyzed underwent revascularization surgery. The present supplementary analysis of a 5-year prospective cohort with follow-up using magnetic resonance angiography (MRA) and cerebral blood flow (CBF) measurements was to elucidate the incidence and clinical features of angiographic disease progression in adult patients receiving medical management alone for ischemic MMD. Sixty-eight patients without misery perfusion in the symptomatic cerebral hemispheres underwent MRA and CBF measurement using brain perfusion single-photon emission computed tomography at inclusion and at the end of the 5-year follow-up. When neurological symptoms recurred or newly developed during the 5-year follow-up period, additional MRA and CBF measurements were also performed at that time. All four patients with further ischemic events during the 5-year follow-up period exhibited angiographic disease progression on MRA at such events. Of the remaining 64 patients without further events during the 5-year follow-up period, four exhibited angiographic disease progression on MRA at the end of the 5-year follow-up. CBF was significantly lower at the time of further ischemic events or at the end of the 5-year follow-up than at inclusion in eight patients with angiographic disease progression (p = 0.0117). The incidence of angiographic disease progression was 12% for 5 years in medically treated adult patients with ischemic MMD without cerebral misery perfusion. Patients with further ischemic events always exhibited angiographic disease progression. Cerebral perfusion was reduced in patients with angiographic disease progression even when further ischemic events did not occur.
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Affiliation(s)
- Daisuke Oomori
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori, Yahaba, Iwate, 028-3695, Japan
| | - Yoshitaka Kubo
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori, Yahaba, Iwate, 028-3695, Japan
| | - Masahiro Yabuki
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori, Yahaba, Iwate, 028-3695, Japan
| | - Kei Kitakami
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori, Yahaba, Iwate, 028-3695, Japan
| | - Shunrou Fujiwara
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori, Yahaba, Iwate, 028-3695, Japan
| | - Kenji Yoshida
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori, Yahaba, Iwate, 028-3695, Japan
| | - Masakazu Kobayashi
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori, Yahaba, Iwate, 028-3695, Japan.,Institute for Biomedical Sciences, School of Medicine, Iwate Medical University, 2-1-1 Idai-dori, Yahaba, Iwate, 028-3695, Japan
| | - Kazunori Terasaki
- Institute for Biomedical Sciences, School of Medicine, Iwate Medical University, 2-1-1 Idai-dori, Yahaba, Iwate, 028-3695, Japan
| | - Kuniaki Ogasawara
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori, Yahaba, Iwate, 028-3695, Japan. .,Institute for Biomedical Sciences, School of Medicine, Iwate Medical University, 2-1-1 Idai-dori, Yahaba, Iwate, 028-3695, Japan.
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Fox BM, Dorschel KB, Lawton MT, Wanebo JE. Pathophysiology of Vascular Stenosis and Remodeling in Moyamoya Disease. Front Neurol 2021; 12:661578. [PMID: 34539540 PMCID: PMC8446194 DOI: 10.3389/fneur.2021.661578] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 08/09/2021] [Indexed: 12/04/2022] Open
Abstract
Moyamoya disease (MMD) and moyamoya syndrome (MMS) are progressive vascular pathologies unique to the cerebrovasculature that are important causes of stroke in both children and adults. The natural history of MMD is characterized by primary progressive stenosis of the supraclinoid internal carotid artery, followed by the formation of fragile collateral vascular networks. In MMS, stenosis and collateralization occur in patients with an associated disease or condition. The pathological features of the stenosis associated with MMD include neointimal hyperplasia, disruption of the internal elastic lamina, and medial attenuation, which ultimately lead to progressive decreases in both luminal and external arterial diameter. Several molecular pathways have been implicated in the pathophysiology of stenosis in MMD with functions in cellular proliferation and migration, extracellular matrix remodeling, apoptosis, and vascular inflammation. Importantly, several of these molecular pathways overlap with those known to contribute to diseases of systemic arterial stenosis, such as atherosclerosis and fibromuscular dysplasia (FMD). Despite these possible shared mechanisms of stenosis, the contrast of MMD with other stenotic pathologies highlights the central questions underlying its pathogenesis. These questions include why the stenosis that is associated with MMD occurs in such a specific and limited anatomic location and what process initiates this stenosis. Further investigation of these questions is critical to developing an understanding of MMD that may lead to disease-modifying medical therapies. This review may be of interest to scientists, neurosurgeons, and neurologists involved in both moyamoya research and treatment and provides a review of pathophysiologic processes relevant to diseases of arterial stenosis on a broader scale.
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Affiliation(s)
- Brandon M Fox
- Department of Neurosurgery, St. Joseph's Hospital and Medical Center, Barrow Neurological Institute, Phoenix, AZ, United States
| | - Kirsten B Dorschel
- Medical Faculty, Heidelberg University Medical School, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
| | - Michael T Lawton
- Department of Neurosurgery, St. Joseph's Hospital and Medical Center, Barrow Neurological Institute, Phoenix, AZ, United States
| | - John E Wanebo
- Department of Neurosurgery, St. Joseph's Hospital and Medical Center, Barrow Neurological Institute, Phoenix, AZ, United States
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Ogawa K, Suma T, Akimoto T, Hara M, Fujishiro M, Yoshino A, Nakajima H. Clinical Study of Cerebral Ischemia in Moyamoya Disease from the View of Development of the Anterior Choroidal Artery. J Stroke Cerebrovasc Dis 2021; 30:106078. [PMID: 34500198 DOI: 10.1016/j.jstrokecerebrovasdis.2021.106078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/16/2021] [Accepted: 08/19/2021] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVES The anterior choroidal artery (AchA) is one of the collateral vessels in moyamoya disease (MMD). The incidence of cerebral ischemia in MMD was analyzed through the association between development of the AchA and advancement of MMD stage. MATERIALS AND METHODS Twelve patients of MMD with cerebral ischemia (infarction; 9 patients, transient ischemic attack; 3 patients) were enrolled. Advancement of MMD was evaluated using Suzuki's stage. The grades in Suzuki's stage were subclassified into a non-progressive stage for grades 1 and 2, and a progressive stage for grades 4 and 5. Dilatation of the AchA was judged as the presence of development of this artery. Development of the AchA was grouped into proximal type and proximal and distal type. RESULTS Most frequent locations of infarcts were the anterior and parietal lobes in 6 patients each. Development of the AchA was confirmed on the ischemic side in all patients and on the non-ischemic side in 9 patients. Development of the AchA in the progressive stage was limited in the proximal and distal type on both sides. Development of the AchA in the non-progressive stage was the proximal type on the ischemic side. CONCLUSIONS The cause of cerebral ischemia was possibly associated with inadequate blood supply of the AchA in the non-progressive stage, and the lower blood flow from the internal carotid artery (ICA) in the progressive stage. Disparity between collateral blood flow from the AchA and the blood flow from the ICA was considered to relate to incidence of cerebral ischemia in MMD.
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Affiliation(s)
- Katsuhiko Ogawa
- Division of Neurology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan.
| | - Takeshi Suma
- Division of Neurology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Takayoshi Akimoto
- Division of Neurology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Makoto Hara
- Division of Neurology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Midori Fujishiro
- Division of Diabetes and Metabolic Diseases, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Atsuo Yoshino
- Department of Neurological Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Hideto Nakajima
- Division of Neurology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
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Garcia JH, Morshed RA, Winkler EA, Li Y, Fox CK, Fullerton HJ, Rutledge C, Beniwal AS, Lawton MT, Abla AA, Gupta N, Hetts SW. Pediatric moyamoya MRI score: an imaging-based scale to predict outcomes in surgically treated pediatric patients with moyamoya. Neurosurg Focus 2021; 51:E8. [PMID: 34469869 DOI: 10.3171/2021.6.focus21283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 06/23/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Moyamoya is a progressive arteriopathy that predisposes patients to stroke due to stenosis of the intracranial internal carotid arteries and their proximal branches. Despite the morbidity caused by this condition, the ability to accurately predict prognosis for individual patients remains challenging. The goal of this study was to develop a systematic scoring method based on parenchymal findings on preoperative brain MRI to predict long-term outcomes for surgically treated pediatric patients with moyamoya. METHODS A retrospective surgical cohort of pediatric patients (≤ 18 years of age at the time of the initial surgery) with moyamoya from a single center were studied. Radiological variables with existing correlations between outcomes in moyamoya or other vascular diseases were chosen to score preoperative MRI based on easily defined parenchymal findings that could be rapidly assessed and used to make a numeric score. Calculated scores were correlated with clinical outcome measures using the Pearson correlation coefficient and area under the receiver operating characteristic curve (AUROC). RESULTS A total of 35 children with moyamoya disease or moyamoya syndrome were included in the study, with a median follow-up time of 2.6 years from the time of surgery. The pediatric moyamoya MRI score (PMMS) consists of ischemic changes (0-2; 0 = none, 1 = focal, 2 = diffuse), encephalomalacia (0-2; 0 = none, 1 = focal, 2 = diffuse), and hemorrhage (0-1; 0 = not present, 1 = present). PMMSs were highly correlated with pediatric modified Rankin Scale scores at the last follow-up (r = 0.7, 95% CI 0.44-0.84; p < 0.001) as a six-point scale, and when dichotomized (AUROC = 0.85). CONCLUSIONS The PMMS was found to be a simple tool based on preoperative MRI data that could be quickly and easily calculated and correlated with disability. This scoring method may aid future development of predictive models of outcomes for children with moyamoya disease and moyamoya syndrome.
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Affiliation(s)
- Joseph H Garcia
- 1Department of Neurological Surgery, University of California, San Francisco
| | - Ramin A Morshed
- 1Department of Neurological Surgery, University of California, San Francisco
| | - Ethan A Winkler
- 1Department of Neurological Surgery, University of California, San Francisco
| | - Yi Li
- 2Department of Radiology and Biomedical Imaging, University of California, San Francisco
| | - Christine K Fox
- 3Pediatric Stroke and Cerebrovascular Disease Center, Department of Neurology, University of California, San Francisco; and
| | - Heather J Fullerton
- 3Pediatric Stroke and Cerebrovascular Disease Center, Department of Neurology, University of California, San Francisco; and
| | - Caleb Rutledge
- 1Department of Neurological Surgery, University of California, San Francisco
| | - Angad S Beniwal
- 1Department of Neurological Surgery, University of California, San Francisco
| | - Michael T Lawton
- 1Department of Neurological Surgery, University of California, San Francisco.,4Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona
| | - Adib A Abla
- 1Department of Neurological Surgery, University of California, San Francisco
| | - Nalin Gupta
- 1Department of Neurological Surgery, University of California, San Francisco.,5Department of Pediatrics, University of California, San Francisco, California; and
| | - Steven W Hetts
- 2Department of Radiology and Biomedical Imaging, University of California, San Francisco
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Pilgram-Pastor S, Chapot R, Kraemer M. The angiographic presentation of European Moyamoya angiopathy. J Neurol 2021; 269:997-1006. [PMID: 34240321 PMCID: PMC8782787 DOI: 10.1007/s00415-021-10684-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 06/21/2021] [Accepted: 06/22/2021] [Indexed: 11/26/2022]
Abstract
Background and purpose Little is known about the angiographic presentation of Moyamoya angiopathy (MMA) in non-Asian patients. Methods Conventional cerebral angiograms from 155 Caucasian patients diagnosed as MMA were analyzed with respect to extracranial champagne bottle neck sign, Suzuki stages, collateral status, as well as presence of aneurysms and posterior cerebral artery stenosis. Results In 84 of 155 angiograms, the extracranial carotid artery was visualized, in 65 of them (77.4%), a champagne bottle neck sign was noted. Of the 278 analyzable hemispheres, 13.7%,11.2%, 37.8%, 27.3%, 8.6%, and 1.4% were classified as Suzuki stage I, stage II, stage III, stage IV, stage V, and stage VI, respectively. Among 280 hemispheres, in 53 hemispheres (18.9%) isolated basal collaterals (pathway I) and in 104 hemispheres (37.1%) choroidal and pericallosal collaterals (including basal collaterals, pathway II) were found. In 74 hemispheres (26.4%) ethmoidal collaterals (pathways III), and in 17 hemispheres (6.1%) vault collaterals were visualized. Patients with higher Suzuki stages IV–VI (p = 0.008) and ethmoidal collaterals (p < 0.001) suffered more often from cerebral hemorrhage. Transient ischemic attacks occurred more frequently in patients with Suzuki stage I to III (p < 0.001). In 10 of 155 patients (6.5%), the angiogram revealed a cerebral aneurysm. In 13 patients (8.4%), a stenotic P1 segment of the posterior cerebral artery was found. Conclusions This is so far the largest observational study about angiography in Caucasian European MMA patients. A comparison with Asian data indicates similarity of disease in Caucasian and Asian patients.
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Affiliation(s)
- Sara Pilgram-Pastor
- Department of Neuroradiology, Alfried Krupp Hospital, Essen, Germany
- University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, University of Bern, Bern, Switzerland
| | - René Chapot
- Department of Neuroradiology, Alfried Krupp Hospital, Essen, Germany
| | - Markus Kraemer
- Department of Neurology, Medical Faculty, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany.
- Department of Neurology, Alfried Krupp Von Bohlen Und Halbach Hospital, Alfried-Krupp-Str. 21, 45117, Essen, Germany.
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Liming Z, Weiliang S, Jia J, Hao L, Yang L, Ludtka C, Jahromi BR, Goehre F, Zemmar A, Tianxiao L, Hernesniemi J, Andrade-Barazarte H, Chaoyue L. Impact of blood pressure changes in cerebral blood perfusion of patients with ischemic Moyamoya disease evaluated by SPECT. J Cereb Blood Flow Metab 2021; 41:1472-1480. [PMID: 33153375 PMCID: PMC8142135 DOI: 10.1177/0271678x20967458] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Our aim was to determine the impact of targeted blood pressure modifications on cerebral blood flow in ischemic moyamoya disease patients assessed by single-photon emission computed tomography (SPECT). From March to September 2018, we prospectively collected data of 154 moyamoya disease patients and selected 40 patients with ischemic moyamoya disease. All patients underwent in-hospital blood pressure monitoring to determine the mean arterial pressure baseline values. The study cohort was subdivided into two subgroups: (1) Group A or relative high blood pressure (RHBP) with an induced mean arterial pressure 10-20% higher than baseline and (2) Group B or relative low blood pressure (RLBP) including patients with mean arterial pressure 10-20% lower than baseline. All patients underwent initial SPECT study on admission-day, and on the following day, every subgroup underwent a second SPECT study under their respective targeted blood pressure values. In general, RHBP patients showed an increment in perfusion of 10.13% (SD 2.94%), whereas RLBP patients showed a reduction of perfusion of 12.19% (SD 2.68%). Cerebral blood flow of moyamoya disease patients is susceptible to small blood pressure changes, and cerebral autoregulation might be affected due to short dynamic blood pressure modifications.
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Affiliation(s)
- Zhao Liming
- Department of Neurosurgery, Cerebrovascular Disease Hospital, Henan Provincial People's Hospital; Zhengzhou University, Zhengzhou, China
| | - Sun Weiliang
- Department of Neurosurgery, Cerebrovascular Disease Hospital, Henan Provincial People's Hospital; Zhengzhou University, Zhengzhou, China
| | - Jia Jia
- Department of Anesthesiology and Perioperative medicine, Henan Provincial People's Hospital; Zhengzhou; Zhengzhou, China
| | - Liang Hao
- Department of Neurosurgery, Cerebrovascular Disease Hospital, Henan Provincial People's Hospital; Zhengzhou University, Zhengzhou, China
| | - Liu Yang
- Department of Neurosurgery, Cerebrovascular Disease Hospital, Henan Provincial People's Hospital; Zhengzhou University, Zhengzhou, China
| | - Christopher Ludtka
- "Juha Hernesniemi" International Center for Neurosurgery, Henan Provincial People's Hospital, Zhengzhou University, Zhengzhou, China
| | - Behnam Rezai Jahromi
- Department of Neurosurgery, Cerebrovascular Disease Hospital, Henan Provincial People's Hospital; Zhengzhou University, Zhengzhou, China
| | - Felix Goehre
- Department of Neurosurgery, BG Klinikum Bergmannstrost Halle, Halle, Germany
| | - Ajmal Zemmar
- Department of Neurosurgery, Cerebrovascular Disease Hospital, Henan Provincial People's Hospital; Zhengzhou University, Zhengzhou, China.,"Juha Hernesniemi" International Center for Neurosurgery, Henan Provincial People's Hospital, Zhengzhou University, Zhengzhou, China
| | - Li Tianxiao
- Department of Neurosurgery, Cerebrovascular Disease Hospital, Henan Provincial People's Hospital; Zhengzhou University, Zhengzhou, China
| | - Juha Hernesniemi
- Department of Neurosurgery, Cerebrovascular Disease Hospital, Henan Provincial People's Hospital; Zhengzhou University, Zhengzhou, China.,"Juha Hernesniemi" International Center for Neurosurgery, Henan Provincial People's Hospital, Zhengzhou University, Zhengzhou, China
| | - Hugo Andrade-Barazarte
- Department of Neurosurgery, Cerebrovascular Disease Hospital, Henan Provincial People's Hospital; Zhengzhou University, Zhengzhou, China.,"Juha Hernesniemi" International Center for Neurosurgery, Henan Provincial People's Hospital, Zhengzhou University, Zhengzhou, China
| | - Li Chaoyue
- Department of Neurosurgery, Cerebrovascular Disease Hospital, Henan Provincial People's Hospital; Zhengzhou University, Zhengzhou, China
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45
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Huguenard AL, Guerriero RM, Tomko SR, Limbrick DD, Zipfel GJ, Guilliams KP, Strahle JM. Immediate Postoperative Electroencephalography Monitoring in Pediatric Moyamoya Disease and Syndrome. Pediatr Neurol 2021; 118:40-45. [PMID: 33773289 DOI: 10.1016/j.pediatrneurol.2021.02.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 02/04/2021] [Accepted: 02/06/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND Moyamoya disease and syndrome are progressive steno-occlusive cerebrovascular diseases that manifest clinically with ischemic episodes. There is evidence for the use of electroencephalography (EEG) in preoperative and long-term postoperative evaluation of these patients, as well as in the intraoperative period to monitor for changes correlated with perioperative ischemic events. However, the utility of EEG in the immediate postprocedure time period has not previously been described. METHODS We review six patients who underwent pial synangiosis from 2017 to 2019. EEGs from the preoperative, intraoperative, and immediate postoperative period were evaluated, as well as clinical examination changes and subsequent interventions. RESULTS Six patients with postoperative EEG monitoring following pial synangiosis were included. EEG data was collected preoperatively, intraoperatively, and continuously postoperatively. Preoperatively, five of six patients had normal background activity on EEG, whereas one of six had hemispheric asymmetry. Three patients had new or worsening hemispheric intracerebral asymmetry on EEG during the immediate postsurgical period. Two of these had no clinical manifestations of ischemia, and one had transient left facial weakness. All three underwent blood pressure augmentation with improvement in the asymmetry on EEG and clinical improvement in the symptomatic patient. CONCLUSIONS Although widely accepted as a useful tool during the preoperative and intraoperative periods of evaluation and management of moyamoya disease and syndrome, we propose that the use of continuous EEG in the immediate postoperative period may have potential as a useful adjunct by both detecting early clinical and subclinical intracranial ischemia.
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Affiliation(s)
- Anna L Huguenard
- Department of Neurosurgery, Washington University in St. Louis, St. Louis, Missouri.
| | - Rejean M Guerriero
- Division of Pediatric and Developmental Neurology, Department of Neurology, St. Louis Children's Hospital, St. Louis, Missouri
| | - Stuart R Tomko
- Division of Pediatric and Developmental Neurology, Department of Neurology, St. Louis Children's Hospital, St. Louis, Missouri
| | - David D Limbrick
- Department of Neurosurgery, Washington University in St. Louis, St. Louis, Missouri
| | - Gregory J Zipfel
- Department of Neurosurgery, Washington University in St. Louis, St. Louis, Missouri
| | - Kristin P Guilliams
- Division of Pediatric and Developmental Neurology, Department of Neurology, St. Louis Children's Hospital, St. Louis, Missouri
| | - Jennifer M Strahle
- Department of Neurosurgery, Washington University in St. Louis, St. Louis, Missouri
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Yu J, Du Q, Xie H, Chen J, Chen J. What and why: the current situation and future prospects of "ivy sign" in moyamoya disease. Ther Adv Chronic Dis 2020; 11:2040622320960004. [PMID: 33101620 PMCID: PMC7549182 DOI: 10.1177/2040622320960004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 08/26/2020] [Indexed: 11/17/2022] Open
Abstract
“Ivy sign” is a special imaging manifestation of moyamoya disease (MMD), which
shows continuous linear or punctate high intensity along the cortical sulci and
subarachnoid space on magnetic resonance images. Ivy sign was reported to
reflect the development of compensatory collaterals, and to be closely related
to hemodynamic changes and clinical symptoms, and to indicate the postoperative
prognosis, in MMD patients. It is a unique and critical marker for MMD. However,
due to the lack of consistent criteria, such as definition, grading, and
identification standards, ivy sign has not received much attention. We undertook
a comprehensive literature search and summarized the current situation regarding
ivy sign in MMD in terms of baseline characteristics, detection methods,
definition, regional division and distribution patterns, grading criterions,
incidence, related factors, the mechanism of ivy sign, and the effects of
treatments. We also provided related concerns raised and future prospects
relevant to studies about ivy sign in MMD.
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Affiliation(s)
- Jin Yu
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Qian Du
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hui Xie
- Department of Medical Image, Maternal and Child Health Hospital of Hubei Provence, Wuhan, China
| | - Jiayi Chen
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jincao Chen
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, China
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Lehman VT, Cogswell PM, Rinaldo L, Brinjikji W, Huston J, Klaas JP, Lanzino G. Contemporary and emerging magnetic resonance imaging methods for evaluation of moyamoya disease. Neurosurg Focus 2020; 47:E6. [PMID: 31786551 DOI: 10.3171/2019.9.focus19616] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 09/06/2019] [Indexed: 11/06/2022]
Abstract
Numerous recent technological advances offer the potential to substantially enhance the MRI evaluation of moyamoya disease (MMD). These include high-resolution volumetric imaging, high-resolution vessel wall characterization, improved cerebral angiographic and perfusion techniques, high-field imaging, fast scanning methods, and artificial intelligence. This review discusses the current state-of-the-art MRI applications in these realms, emphasizing key imaging findings, clinical utility, and areas that will benefit from further investigation. Although these techniques may apply to imaging of a wide array of neurovascular or other neurological conditions, consideration of their application to MMD is useful given the comprehensive multidimensional MRI assessment used to evaluate MMD. These MRI techniques span from basic cross-sectional to advanced functional sequences, both qualitative and quantitative.The aim of this review was to provide a comprehensive summary and analysis of current key relevant literature of advanced MRI techniques for the evaluation of MMD with image-rich case examples. These imaging methods can aid clinical characterization, help direct treatment, assist in the evaluation of treatment response, and potentially improve the understanding of the pathophysiology of MMD.
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Affiliation(s)
| | | | | | | | | | - James P Klaas
- 3Neurology, Mayo Clinic College of Graduate Medical Education, Rochester, Minnesota
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Arterial transit artifacts observed by arterial spin labeling in Moyamoya disease. J Stroke Cerebrovasc Dis 2020; 29:105058. [PMID: 32807463 DOI: 10.1016/j.jstrokecerebrovasdis.2020.105058] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 06/01/2020] [Accepted: 06/12/2020] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES Arterial spin labeling (ASL) is a magnetic resonance imaging (MRI) technique used to assess cerebral perfusion. When tissue perfusion is impaired, such as in Moyamoya disease, a hyperintense band called the arterial transit artifact (ATA) may occur, which interferes with accurate measurements on ASL-MRI. In this study, we evaluated the correlation of ATAs with magnetic resonance angiography (MRA) and single-photon emission computed tomography (SPECT) imaging results in Moyamoya disease. The aim of our study was to elucidate the pathophysiology of ATAs and risk factors for high ATA scores. MATERIALS AND METHODS This retrospective study included 28 patients (56 hemispheres) with Moyamoya disease treated at our institution. MRI, MRA, ASL perfusion, and N-isopropyl-[123I] b-iodoamphetamine (123I-IMP) SPECT were performed. In order to semi-quantitatively evaluate the degree of ATA, the ATA scores were measured according to the number of hyperintense signal bands in the cerebral cortex. The relationship between the ATA scores and clinical and radiological factors were analyzed. RESULTS Regional cerebral blood flow (rCBF) determined with ASL weakly correlated with that determined by 123I-IMP SPECT (ρ=0.31, p=0.027). There was no significant association between the ATA scores and rCBF values determined with 123I-IMP SPECT (p=0.872, 0.745, 0.743 at PLD1000 (post-labeling delay), 1500, and 2000, respectively). However, there was a significant correlation between ATA scores and MRA scores (ρ=0.427 p=0.001; ρ=0.612 p=0.001; ρ=0.563 p=0.001 at PLD1000, 1500, and 2000, respectively). An analysis of patient background characteristics revealed a significantly higher incidence of high ATA scores in female patients, patients with high MRA scores, and patients with a distinguishable ivy sign. A multivariate analysis confirmed that female sex, high MRA score, and presence of an ivy sign were risk factors for high ATA scores. CONCLUSION ATA scores were moderately correlated with MRA scores, and presence of an ivy sign was the most predictive factor for high ATA scores. A high ATA score determined using ASL in a patient with Moyamoya disease might suggest an advanced disease stage and a reduction in cerebrovascular reserve capacity.
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Spatial coefficient of variation applied to arterial spin labeling MRI may contribute to predict surgical revascularization outcomes in pediatric moyamoya vasculopathy. Neuroradiology 2020; 62:1003-1015. [DOI: 10.1007/s00234-020-02446-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 04/20/2020] [Indexed: 10/24/2022]
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50
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Solomou A, Spiliopoulos KC, Vasilagkos G, Vagionis A, Zampakis P. Internal carotid artery origin of the anterior cerebral artery: A rare anatomic intracranial arterial variation in a child with morning glory disc anomaly and moyamoya vascular pattern; case report and review of literature. Brain Circ 2020; 6:133-138. [PMID: 33033785 PMCID: PMC7511914 DOI: 10.4103/bc.bc_10_20] [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: 03/17/2020] [Revised: 05/15/2020] [Accepted: 06/03/2020] [Indexed: 11/19/2022] Open
Abstract
Morning glory disc anomaly (MGDA) characterizes a congenital dysgenetic disorder of the optic disc, coexisting with arterial intracranial abnormalities, including Moyamoya vascular disease, a significantly rare disease in the European populations. We report a 2.5-year-old female child from Greece previously diagnosed with MGDA, who presented with right-hand paresis, accompanied by focal epileptic spasms, followed by an episode of brief absence seizure, as well as some arm clonic spasms. Magnetic resonance angiography scan revealed the presence of an anomalous origin of the anterior cerebral artery (ACA) from the internal carotid artery (ICA) along with vascular abnormalities, compatible with Moyamoya pattern. To the very best of our knowledge, this is the first reported case of anomalous origin of ACA from the supraclinoid ICA accompanied by severe occlusive intracranial disease (moyamoya-like pattern) in a patient with known MGDA, highlighting the embryonic character of the vascular manifestations in MGDA. It also verifies the association of Moyamoya pattern with MGDA, thus linking vascular dysgenesis as a possible cause of MGDA.
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Affiliation(s)
- Aikaterini Solomou
- MRI Unit, Department of Radiology, University Hospital of Patras, Patras, Greece
| | | | - Georgios Vasilagkos
- MRI Unit, Department of Radiology, University Hospital of Patras, Patras, Greece
| | - Athanasios Vagionis
- MRI Unit, Department of Radiology, University Hospital of Patras, Patras, Greece
| | - Petros Zampakis
- MRI Unit, Department of Radiology, University Hospital of Patras, Patras, Greece
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