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Pinto SN, Lerner A, Phung D, Barisano G, Chou B, Xu W, Sheikh-Bahaei N. Arterial Spin Labeling in Migraine: A Review of Migraine Categories and Mimics. J Cent Nerv Syst Dis 2023. [DOI: 10.1177/11795735231160032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023] Open
Abstract
Migraine is a complex headache characterized by changes in functional connectivity and cerebral perfusion. The perfusion changes represent a valuable domain for targeted drug therapy. Arterial spin labeling is a noncontrast imaging technique of quantifying cerebral perfusion changes in the migraine setting. In this narrative review, we will discuss the pathophysiology of the different categories of migraine, as defined by the International Classification of Headache Disorders-3 and describe a category-based approach to delineating perfusion changes in migraine on arterial spin labeling images. We will also discuss the use of arterial spin labeling to differentiate migraine from stroke and/or seizures in the adult and pediatric populations. Our systematic approach will help improve the understanding of the complicated vascular changes that occur during migraines and identify potential areas of future research.
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Affiliation(s)
- Soniya N Pinto
- Department of Diagnostic Imaging, St Jude Children’s Research Hospital, Memphis, TN, USA
| | - Alexander Lerner
- University of Southern California, Keck School of Medicine, Los Angeles, CA, USA
| | - Daniel Phung
- University of Southern California, Keck School of Medicine, Los Angeles, CA, USA
| | - Giuseppe Barisano
- University of Southern California, Keck School of Medicine, Los Angeles, CA, USA
| | - Brendon Chou
- University of Southern California, Keck School of Medicine, Los Angeles, CA, USA
| | - Wilson Xu
- University of Southern California, Keck School of Medicine, Los Angeles, CA, USA
| | - Nasim Sheikh-Bahaei
- University of Southern California, Keck School of Medicine, Los Angeles, CA, USA
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2
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Pohl H, Sandor PS, Moisa M, Ruff CC, Schoenen J, Luechinger R, O'Gorman R, Riederer F, Gantenbein AR, Michels L. Occipital transcranial direct current stimulation in episodic migraine patients: effect on cerebral perfusion. Sci Rep 2023; 13:13944. [PMID: 37626074 PMCID: PMC10457373 DOI: 10.1038/s41598-023-39659-5] [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: 02/06/2023] [Accepted: 07/28/2023] [Indexed: 08/27/2023] Open
Abstract
Cerebral blood flow differs between migraine patients and healthy controls during attack and the interictal period. This study compares the brain perfusion of episodic migraine patients and healthy controls and investigates the influence of anodal transcranial direct current stimulation (tDCS) over the occipital cortex. We included healthy adult controls and episodic migraineurs. After a 28-day baseline period and the baseline visit, migraine patients received daily active or sham anodal tDCS over the occipital lobe for 28 days. All participants underwent a MRI scan at baseline; migraineurs were also scanned shortly after the stimulation period and about five months later. At baseline, brain perfusion of migraine patients and controls differed in several areas; among the stimulated areas, perfusion was increased in the cuneus of healthy controls. At the first visit, the active tDCS group had an increased blood flow in regions processing visual stimuli and a decreased perfusion in other areas. Perfusion did not differ at the second follow-up visit. The lower perfusion level in migraineurs in the cuneus indicates a lower preactivation level. Anodal tDCS over the occipital cortex increases perfusion of several areas shortly after the stimulation period, but not 5 months later. An increase in the cortical preactivation level could mediate the transient reduction of the migraine frequency.Trial registration: NCT03237754 (registered at clincicaltrials.gov; full date of first trial registration: 03/08/2017).
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Affiliation(s)
- Heiko Pohl
- Department of Neurology, University Hospital Zurich, Zurich, Switzerland
| | - Peter S Sandor
- Department of Neurology, University Hospital Zurich, Zurich, Switzerland
- Department of Neurology and Neurorehabilitation, ZURZACH Care, Bad Zurzach, Switzerland
| | - Marius Moisa
- Zurich Center for Neuroeconomics (ZNE), Department of Economics, University of Zurich, Zurich, Switzerland
| | - Christian C Ruff
- Zurich Center for Neuroeconomics (ZNE), Department of Economics, University of Zurich, Zurich, Switzerland
| | - Jean Schoenen
- Headache Research Unit, Department of Neurology-Citadelle Hospital, University of Liège, Liège, Belgium
| | - Roger Luechinger
- Institute for Biomedical Engineering, ETH Zurich and University of Zurich, Zurich, Switzerland
| | - Ruth O'Gorman
- Center for MR-Research, University Children's Hospital, Zurich, Switzerland
- Children's Research Center, University Children's Hospital, Zurich, Switzerland
| | - Franz Riederer
- Department of Neurology, University Hospital Zurich, Zurich, Switzerland
- Department of Neurology, Clinic Hietzing, Vienna, Austria
- Karl Landsteiner Institute for Epilepsy Research and Cognitive Neurology, Vienna, Austria
| | - Andreas R Gantenbein
- Department of Neurology, University Hospital Zurich, Zurich, Switzerland
- Department of Neurology and Neurorehabilitation, ZURZACH Care, Bad Zurzach, Switzerland
| | - Lars Michels
- Department of Neuroradiology, Clinical Neuroscience Center, University Hospital Zurich, 8091, Zurich, Switzerland.
- Clinical Neuroscience Center, University Hospital Zurich, Zurich, Switzerland.
- Neuroscience Center Zurich, University of Zurich and Swiss Federal Institute of Technology Zurich, Zurich, Switzerland.
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Russo A, Silvestro M, Tessitore A, Orologio I, De Rosa AP, De Micco R, Tedeschi G, Esposito F, Cirillo M. Arterial spin labeling MRI applied to migraine: current insights and future perspectives. J Headache Pain 2023; 24:71. [PMID: 37322466 DOI: 10.1186/s10194-023-01597-y] [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: 04/20/2023] [Accepted: 05/19/2023] [Indexed: 06/17/2023] Open
Abstract
INTRODUCTION Advanced neuroimaging techniques have extensively contributed to elucidate the complex mechanisms underpinning the pathophysiology of migraine, a neurovascular disorder characterized by episodes of headache associated with a constellation of non-pain symptoms. The present manuscript, summarizing the most recent progresses of the arterial spin labelling (ASL) MRI techniques and the most significant findings from ASL studies conducted in migraine, is aimed to clarify how ASL investigations are contributing to the evolving insight on migraine pathophysiology and their putative role in migraine clinical setting. ASL techniques, allowing to quantitatively demonstrate changes in cerebral blood flow (CBF) both during the attacks and in the course of interictal period, could represent the melting point between advanced neuroimaging investigations, conducted with pure scientific purposes, and conventional neuroimaging approaches, employed in the diagnostic decision-making processes. MAIN BODY Converging ASL evidences have demonstrated that abnormal CBF, exceeding the boundaries of a single vascular territory, with biphasic trend dominated by an initial hypoperfusion (during the aura phenomenon but also in the first part of the headache phase) followed by hyperperfusion, characterizes migraine with aura attack and can represent a valuable clinical tool in the differential diagnosis from acute ischemic strokes and epileptic seizures. Studies conducted during migraine without aura attacks are converging to highlight the involvement of dorsolateral pons and hypothalamus in migraine pathophysiology, albeit not able to disentangle their role as "migraine generators" from mere attack epiphenomenon. Furthermore, ASL findings tend to support the presence of perfusion abnormalities in brain regions known to be involved in aura ignition and propagation as well as in areas involved in multisensory processing, in both patients with migraine with aura and migraine without aura. CONCLUSION Although ASL studies have dramatically clarified quality and timing of perfusion abnormalities during migraine with aura attacks, the same cannot be said for perfusion changes during migraine attacks without aura and interictal periods. Future studies with more rigorous methodological approaches in terms of study protocol, ASL technique and sample selection and size are mandatory to exploit the possibility of better understanding migraine pathophysiology and identifying neuroimaging biomarkers of each migraine phase in different migraine phenotypes.
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Affiliation(s)
- Antonio Russo
- Headache Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy.
- Advanced MRI Neuroimaging Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy.
| | - Marcello Silvestro
- Headache Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Alessandro Tessitore
- Headache Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Ilaria Orologio
- Headache Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Alessandro Pasquale De Rosa
- Advanced MRI Neuroimaging Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Rosa De Micco
- Headache Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Gioacchino Tedeschi
- Headache Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
- Advanced MRI Neuroimaging Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Fabrizio Esposito
- Advanced MRI Neuroimaging Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Mario Cirillo
- Advanced MRI Neuroimaging Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
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Hanna D, Holland J, Lichtblau N, Maduakor C, Khan F, Kerr T. Know your stroke mimics. Arch Dis Child Educ Pract Ed 2023; 108:152-153. [PMID: 35115313 DOI: 10.1136/archdischild-2021-323223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 12/11/2021] [Indexed: 11/03/2022]
Affiliation(s)
- Dina Hanna
- Department of Paediatric Neurology, St George's University Hospitals NHS Foundation Trust, London, UK
| | - Jonathon Holland
- Department of Paediatric Neurology, St George's University Hospitals NHS Foundation Trust, London, UK
| | - Nicole Lichtblau
- Department of Paediatric Neurology, St George's University Hospitals NHS Foundation Trust, London, UK
| | - Chinedu Maduakor
- Department of Paediatric Neurology, St George's University Hospitals NHS Foundation Trust, London, UK
| | - Faraan Khan
- Department of Paediatric Neurology, St George's University Hospitals NHS Foundation Trust, London, UK
- Department of Neuroradiology, Atkinson Morley Regional Neuroscience Centre, St George's University Hospitals NHS foundaton Trust, London, UK
| | - Tim Kerr
- Department of Paediatric Neurology, St George's University Hospitals NHS Foundation Trust, London, UK
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Haggenmüller B, Kreiser K, Sollmann N, Huber M, Vogele D, Schmidt SA, Beer M, Schmitz B, Ozpeynirci Y, Rosskopf J, Kloth C. Pictorial Review on Imaging Findings in Cerebral CTP in Patients with Acute Stroke and Its Mimics: A Primer for General Radiologists. Diagnostics (Basel) 2023; 13:diagnostics13030447. [PMID: 36766552 PMCID: PMC9914845 DOI: 10.3390/diagnostics13030447] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/19/2023] [Accepted: 01/21/2023] [Indexed: 01/28/2023] Open
Abstract
The imaging evaluation of computed tomography (CT), CT angiography (CTA), and CT perfusion (CTP) is of crucial importance in the setting of each emergency department for suspected cerebrovascular impairment. A fast and clear assignment of characteristic imaging findings of acute stroke and its differential diagnoses is essential for every radiologist. Different entities can mimic clinical signs of an acute stroke, thus the knowledge and fast identification of stroke mimics is important. A fast and clear assignment is necessary for a correct diagnosis and a rapid initiation of appropriate therapy. This pictorial review describes the most common imaging findings in CTP with clinical signs for acute stroke or other acute neurological disorders. The knowledge of these pictograms is therefore essential and should also be addressed in training and further education of radiologists.
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Affiliation(s)
- Benedikt Haggenmüller
- Department of Diagnostic and Interventional Radiology, Ulm University Medical Center, Albert-Einstein-Allee 23, 89081 Ulm, Germany
- Correspondence:
| | - Kornelia Kreiser
- Department of Radiology and Neuroradiology, RKU—Universitäts- und Rehabilitationskliniken Ulm, Oberer Eselsberg 45, 89081 Ulm, Germany
| | - Nico Sollmann
- Department of Diagnostic and Interventional Radiology, Ulm University Medical Center, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Magdalena Huber
- Department of Diagnostic and Interventional Radiology, Ulm University Medical Center, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Daniel Vogele
- Department of Diagnostic and Interventional Radiology, Ulm University Medical Center, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Stefan A. Schmidt
- Department of Diagnostic and Interventional Radiology, Ulm University Medical Center, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Meinrad Beer
- Department of Diagnostic and Interventional Radiology, Ulm University Medical Center, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Bernd Schmitz
- Department of Neuroradiology, Bezirkskrankenhaus Günzburg, Lindenallee 2, 89312 Günzburg, Germany
| | - Yigit Ozpeynirci
- Institute of Neuroradiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377 Munich, Germany
| | - Johannes Rosskopf
- Department of Neuroradiology, Bezirkskrankenhaus Günzburg, Lindenallee 2, 89312 Günzburg, Germany
| | - Christopher Kloth
- Department of Diagnostic and Interventional Radiology, Ulm University Medical Center, Albert-Einstein-Allee 23, 89081 Ulm, Germany
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6
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Khalili N, Wang R, Garg T, Ahmed A, Hoseinyazdi M, Sair HI, Luna LP, Intrapiromkul J, Deng F, Yedavalli V. Clinical application of brain perfusion imaging in detecting stroke mimics: A review. J Neuroimaging 2023; 33:44-57. [PMID: 36207276 DOI: 10.1111/jon.13061] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 02/01/2023] Open
Abstract
Stroke mimics constitute a significant proportion of patients with suspected acute ischemic stroke. These conditions may resemble acute ischemic stroke and demonstrate abnormalities on perfusion imaging sequences. The most common stroke mimics include seizure/epilepsy, migraine with aura, brain tumors, functional disorders, infectious encephalopathies, Wernicke's encephalopathy, and metabolic abnormalities. Brain perfusion imaging techniques, particularly computed tomography perfusion and magnetic resonance perfusion, are being widely used in routine clinical practice for treatment selection in patients presenting with large vessel occlusion. At the same time, the utilization of these imaging modalities enables the opportunity to better diagnose patients with stroke mimics in a time-sensitive setting, leading to appropriate management, decision-making, and resource allocation. In this review, we describe patterns of perfusion abnormalities that could discriminate patients with stroke mimics from those with acute ischemic stroke and provide specific case examples to illustrate these perfusion abnormalities. In addition, we discuss the challenges associated with interpretation of perfusion images in stroke-related pathologies. In general, perfusion imaging can provide additional information in some cases-when used in combination with conventional magnetic resonance imaging and computed tomography-and might help in detecting stroke mimics among patients who present with acute onset focal neurological symptoms.
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Affiliation(s)
- Neda Khalili
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Richard Wang
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Tushar Garg
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Amara Ahmed
- Department of Radiology, Florida State University College of Medicine, Tallahassee, Florida, USA
| | - Meisam Hoseinyazdi
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Haris I Sair
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Licia P Luna
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Jarunee Intrapiromkul
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Francis Deng
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Vivek Yedavalli
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, Maryland, USA
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7
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Iutaka T, de Freitas MB, Omar SS, Scortegagna FA, Nael K, Nunes RH, Pacheco FT, Maia Júnior ACM, do Amaral LLF, da Rocha AJ. Arterial Spin Labeling: Techniques, Clinical Applications, and Interpretation. Radiographics 2023; 43:e220088. [DOI: 10.1148/rg.220088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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8
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Daftari Besheli L, Ahmed A, Hamam O, Luna L, Sun LR, Urrutia V, Hillis AE, Tekes-Brady A, Yedavalli V. Arterial Spin Labeling technique and clinical applications of the intracranial compartment in stroke and stroke mimics - A case-based review. Neuroradiol J 2022; 35:437-453. [PMID: 35635512 PMCID: PMC9437493 DOI: 10.1177/19714009221098806] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023] Open
Abstract
Magnetic resonance imaging perfusion (MRP) techniques can improve the selection of acute ischemic stroke patients for treatment by estimating the salvageable area of decreased perfusion, that is, penumbra. Arterial spin labeling (ASL) is a noncontrast MRP technique that is used to assess cerebral blood flow without the use of intravenous gadolinium contrast. Thus, ASL is of particular interest in stroke imaging. This article will review clinical applications of ASL in stroke such as assessment of the core infarct and penumbra, localization of the vascular occlusion, and collateral status. Given the nonspecific symptoms that patients can present with, differentiating between stroke and a stroke mimic is a diagnostic dilemma. ASL not only helps in differentiating stroke from stroke mimic but also can be used to specify the exact mimic when used in conjunction with the symptomatology and structural imaging. In addition to a case-based overview of clinical applications of the ASL in stroke and stroke mimics in this article, the more commonly used ASL labeling techniques as well as emerging ASL techniques, future developments, and limitations will be reviewed.
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Affiliation(s)
| | - Amara Ahmed
- Florida State University College of
Medicine, Tallahassee, FL, USA
| | - Omar Hamam
- Johns Hopkins School of
Medicine, Baltimore, MD, USA
| | - Licia Luna
- Johns Hopkins School of
Medicine, Baltimore, MD, USA
| | - Lisa R Sun
- Johns Hopkins School of
Medicine, Baltimore, MD, USA
| | | | - Argye E Hillis
- Johns Hopkins University School of
Medicine, Baltimore, MD, USA
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9
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Mahammedi A, Wang LL, Vagal AS. Imaging Appearance of Migraine and Tension Type Headache. Neurol Clin 2022; 40:491-505. [PMID: 35871781 DOI: 10.1016/j.ncl.2022.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Abdelkader Mahammedi
- Department of Radiology, University of Cincinnati Medical Center, 234 Goodman Street, Cincinnati, OH 45219, USA.
| | - Lily L Wang
- Department of Radiology, University of Cincinnati Medical Center, 234 Goodman Street, Cincinnati, OH 45219, USA
| | - Achala S Vagal
- Department of Radiology, University of Cincinnati Medical Center, 234 Goodman Street, Cincinnati, OH 45219, USA
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Aragão MDFVV, Araújo LC, Valença MM. Tips on when to request an imaging assessment (RMI, CT, or angiography) in a patient suffering from a headache. HEADACHE MEDICINE 2022. [DOI: 10.48208/headachemed.2021.46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
This article is a mini-narrative review covering practical aspects of when to request an imaging evaluation of a headache patient. The vast majority of patients who seek help in a medical office receive as a diagnostic hypothesis one of the primary headaches, such as migraine, tension-type headache, or cluster headache. The vast majority of patients who arrive with a headache at the neurologist's office are migraineurs; individuals who suffer from tension-type headaches rarely seek the neurologist's help. In the emergency scenario, there is a more significant occurrence of secondary headaches when compared to patients treated in an outpatient clinic. In evaluating a patient with a headache, the physician should pay attention to red flags or signs that may indicate a secondary cause for the pain the patient reports. In primary headaches, with the exception of trigeminal-autonomic headaches, there is no need to investigate by imaging. In cluster headaches, in some cases, intracranial lesions may be found as the cause, mainly parasellar lesions such as cerebral aneurysms. Thus, image evaluation is indicated. Depending on the diagnostic suspicion in secondary headaches, different imaging examinations should be requested, the most frequent being MRI, CT, and angiography.
Keywords: Headache, Magnetic Resonance Imaging, Tomography, X-Ray Computed, Migraine Disorders, Cluster Headache, Red flags
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Kerner DM, Nikam R, Kandula VVR, Averill LW. Pearls and Pitfalls in Arterial Spin Labeling Perfusion-Weighted Imaging in Clinical Pediatric Imaging. Semin Ultrasound CT MR 2022; 43:19-30. [PMID: 35164906 DOI: 10.1053/j.sult.2021.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Characteristic arterial spin labeling (ASL) perfusion patterns are seen in a wide variety of pediatric brain pathologies, highlighting the potential added value and prognostic role of this magnetic resonance imaging (MRI) perfusion-weighted imaging modality. Our objective is to review the basic clinical physics, technical underpinnings, and artifacts and challenges as we highlight some of the most clinically relevant pathologies to the application of ASL in the pediatric setting.
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Affiliation(s)
- David M Kerner
- Department of Radiology, Nemours Children's Health System, Alfred I. duPont Hospital for Children, Wilmington, DE
| | - Rahul Nikam
- Department of Radiology, Nemours Children's Health System, Alfred I. duPont Hospital for Children, Wilmington, DE
| | - Vinay V R Kandula
- Department of Radiology, Nemours Children's Health System, Alfred I. duPont Hospital for Children, Wilmington, DE
| | - Lauren W Averill
- Department of Radiology, Nemours Children's Health System, Alfred I. duPont Hospital for Children, Wilmington, DE.
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Suwanwela NC, Kijpaisalratana N, Tepmongkol S, Rattanawong W, Vorasayan P, Charnnarong C, Tantivattana J, Roongruang S, Ongphichetmetha T, Panjasriprakarn P, Chutinet A, Akarathanawat W, Saver JL. Prolonged migraine aura resembling ischemic stroke following CoronaVac vaccination: an extended case series. J Headache Pain 2022; 23:13. [PMID: 35062869 PMCID: PMC8777408 DOI: 10.1186/s10194-022-01385-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 12/29/2021] [Indexed: 11/21/2022] Open
Abstract
Background After the initiation of the COVID-19 vaccination program in Thailand, thousands of patients have experienced unusual focal neurological symptoms. We report 8 patients with focal neurological symptoms after receiving inactivated virus vaccine, CoronaVac. Case series Patients were aged 24–48 years and 75% were female. Acute onset of focal neurological symptoms occurred within the first 24 h after vaccination in 75% and between 1-7d in 25%. All presented with lateralized sensory deficits, motor deficits, or both, of 2–14 day duration. Migraine headache occurred in half of the patients. Magnetic resonance imaging of the brain during and after the attacks did not demonstrate any abnormalities suggesting ischemic stroke. All patients showed moderately large regions of hypoperfusion and concurrent smaller regions of hyperperfusion on SPECT imaging while symptomatic. None developed permanent deficits or structural brain injury. Discussions Here, we present a case series of transient focal neurological syndrome following Coronavac vaccination. The characteristic sensory symptoms, history of migraine, female predominant, and abnormal functional brain imaging without structural changes suggest migraine aura as pathophysiology. We propose that pain related to vaccine injection, component of vaccine, such as aluminum, or inflammation related to vaccination might trigger migraine aura in susceptible patients. Supplementary Information The online version contains supplementary material available at 10.1186/s10194-022-01385-0.
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13
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Vakharia RJ, Jani I, Yadav S, Kurian T. To Study Acute Changes in Brain Oxygenation on MRI in Healthcare Workers Using N95 Mask and PPE Kits for Six Hours a Day. Indian J Radiol Imaging 2022; 31:893-900. [PMID: 35136502 PMCID: PMC8817801 DOI: 10.1055/s-0041-1741086] [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] [Indexed: 11/10/2022] Open
Abstract
Background
Due to long working hours wearing an N95 mask and PPE kit during the COVID-19 pandemic, the healthcare workers (HCWs) complained of headaches, confusion, and exhaustion. This study was therefore performed to study the changes in brain oxygenation.
Aim
To compare brain oxygenation in health care workers wearing an N95 mask with a PPE kit versus a three-ply mask during an intensive care setting for 6 hours.
Materials and Methods
Thirty clinicians and 30 paramedical staff participated in the study. The control (three-ply mask) and subject (N95 mask with PPE) groups included 15 clinicians and 15 paramedical staff. A comparative analysis of brain oxygenation using a 3T magnetic resonance imaging (MRI) machine was performed in these two groups at the beginning and the end of their work shift.
Results
The mean age of the individuals in the control and subject groups was 30.8 and 30.13 years, respectively. The median value of brain oxygenation in the control and subject groups in the pre-shift was between 33 and 31 and post-shift was 30 and 24. The drop in brain oxygenation in subjects was more than the controls (
p
= 0.004) in the post-shift assessments. The cerebral blood flow (CBF) in the bilateral middle cerebral artery (MCA) using arterial spin labeling (ASL) showed a rise in CBF in both groups post-shift as compared with the pre-shift values. The median values of the right and left MCA in the control and subject groups pre-shift were 82.75/83.45 and 89.75/106.65. The post-shift median values of both MCAs of the control and subject groups were 115.65/115.55 and 109.60/119.49.
Conclusion
MRI-BOLD imaging revealed a significant drop in brain oxygenation in the subject group as compared with the control group. Multiphasic-ASL showed a compensatory rise in CBF in both groups.
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Affiliation(s)
| | - Ishaan Jani
- Department of Radiodiagnosis, Wockhardt Hospital, Mumbai, Maharashtra, India
| | - Shashibala Yadav
- Department of Radiodiagnosis, Wockhardt Hospital, Mumbai, Maharashtra, India
| | - Thomas Kurian
- MRI Applications, Philips India Limited, Mumbai, Maharashtra, India
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14
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Arca KN, VanderPluym JH, Halker Singh RB. Narrative review of neuroimaging in migraine with aura. Headache 2021; 61:1324-1333. [PMID: 34309848 DOI: 10.1111/head.14191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 04/21/2021] [Accepted: 05/27/2021] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To improve the understanding of the role and utility of various neuroimaging modalities (clinical and research) for the evaluation of migraine aura (MA) and hemiplegic migraine during the ictal and interictal phases. BACKGROUND MA is defined by reversible neurologic symptoms and is considered a manifestation of a primary condition. As such, most patients with MA do not require imaging. However, if there are atypical features, change in symptom pattern, or it is a first-time presentation, neuroimaging may be used to evaluate for secondary conditions. Neuroimaging includes many modalities, and it is important to consider what information is being captured by these modalities (i.e., structural vs. functional). Imaging abnormalities may be noted both during (ictal) and between (interictal) MA attacks, and it is important for clinicians to be familiar with neuroimaging findings reported in migraine with aura (MWA) compared with other conditions. METHODS With the assistance of a medical librarian, we performed a review of the literature pertaining to MWA and neuroimaging in PubMed. Search terms included were magnetic resonance imaging, positron-emission tomography, single photon-emission computed tomography, functional magnetic resonance imaging, and migraine with aura. We hand-searched these references to inform our subsequent literature review. RESULTS Acute MA can be associated with several unique neuroimaging findings-reversible cortical diffusion restriction, cortical venous engorgement, and a "biphasic" transition from hypoperfusion to hyperperfusion. Imaging findings during MA tend to span more than one vascular territory. Between acute attacks, neuroimaging in people with MWA can resemble migraine without aura in terms of white matter abnormalities and "infarct-like lesions." Research imaging modalities such as volumetric analysis and functional imaging have demonstrated unique findings in migraine with aura. CONCLUSION Although migraine is a clinical diagnosis, understanding of neuroimaging findings in MWA can help clinicians interpret imaging findings and improve patient care.
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Affiliation(s)
- Karissa N Arca
- Department of Neurology, Mayo Clinic Arizona, Scottsdale, AZ, USA
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15
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Li X, Khan A, Li Y, Chen D, Yang J, Zhan H, Du G, Xu J, Lou W, Tong RKY. Hyperconnection and hyperperfusion of overlapping brain regions in patients with menstrual-related migraine: a multimodal neuroimaging study. Neuroradiology 2021; 63:741-749. [PMID: 33392732 DOI: 10.1007/s00234-020-02623-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 12/09/2020] [Indexed: 01/09/2023]
Abstract
PURPOSE Menstrual-related migraine (MRM) results in moderate to severe intensity headaches accompanied by physical and emotional disability over time in women. Neuroimaging methodologies have advanced our understanding of migraine; however, the neural mechanisms of MRM are not clearly understood. METHODS In this study, fourteen MRM patients in the interictal phase and fifteen age- and education-matched healthy control females were recruited. Resting-state functional magnetic resonance imaging (fMRI) and pulsed arterial spin labeling (PASL) MRI were collected for both the subject groups outside of their menstrual periods. Eigenvector centrality mapping (ECM) was performed on resting-state fMRI, and the relative cerebral blood flow (relCBF) was assessed using PASL-MRI. RESULTS MRM patients showed a significantly increased eigenvector centrality in the right medial frontal gyrus compared to healthy controls. Seed-based ECM analysis revealed that increased centrality was associated with the right medial frontal gyrus's hyperconnectivity with the left insula and the right supplementary motor area. The perfusion MRI revealed significantly increased relCBF in the hyperconnected regions. Furthermore, the hyperconnection positively correlated with the attack frequency, while the hyperperfusion showed a positive correlation with the disease duration. CONCLUSION The results suggest that menstrual-related migraine is associated with cerebral hyperconnection and hyperperfusion in critical pain-processing brain regions. Furthermore, this elevated cerebral activity is correlated with different aspects of functional impairment in MRM patients suggesting that perfusion analysis, along with whole-brain connectivity analysis, can provide a comprehensive understanding of neural mechanisms of MRM.
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Affiliation(s)
- Xinyu Li
- Imaging Center, The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang, China
| | - Ahsan Khan
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Yingying Li
- Imaging Center, The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang, China
| | - Diansen Chen
- Imaging Center, The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang, China
| | - Jing Yang
- Imaging Center, The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang, China
| | - Haohui Zhan
- Division of MRI, The Second Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang, China
| | - Ganqin Du
- Department of Neurology, The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang, China
| | - Jin Xu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Institute of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Wutao Lou
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China.
| | - Raymond Kai-Yu Tong
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China
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Abstract
Migraine is a debilitating condition; however, the pharmacological effects on central nervous system networks after successful therapy are poorly understood. Defining this neurocircuitry is critical to our understanding of the disorder and for the development of antimigraine drugs. Using an established inflammatory soup model of migraine-like pathophysiology (N = 12) compared with sham synthetic interstitial fluid migraine induction (N = 12), our aim was to evaluate changes in network-level functional connectivity after sumatriptan-naproxen infusion in awake, conscious rodents (Sprague-Dawley rats). Sumatriptan-naproxen infusion functional magnetic resonance imaging data were analyzed using an independent component analysis approach. Whole-brain analysis yielded significant between-group (inflammatory soup vs synthetic interstitial fluid) alterations in functional connectivity across the cerebellar, default mode, basal ganglia, autonomic, and salience networks. These results demonstrate the large-scale antimigraine effects of sumatriptan-naproxen co-administration after dural sensitization.
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Hebant B, Simmonet L, Moal JL, Guegan-Massardier E. Solving the conundrum. A migrainous infarction or an infarct-induced migrainous attack? J Postgrad Med 2020; 65:181-183. [PMID: 31210144 PMCID: PMC6659434 DOI: 10.4103/jpgm.jpgm_21_19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Solving the conundrum between a migrainous infarction (MI) and an infarct-induced migrainous attack (MA) is challenging. A 35-year-old woman with previous history of migraine with visual auras was addressed for acute aphasia followed by progressive right hemibody paresthesia and then by positive visual symptoms in her right visual field. These phenomena were followed by a migrainous headache. A perfusion CT performed during symptoms showed an extended hypoperfusion in the left temporo-occipital region corresponding to a migraine during an aura attack. An ASL sequence brain MRI undertaken 12 hours later (while the patient was only cephalalgic) showed an area of diffuse hyper-perfusion in the left hemisphere. DWI sequence showed a left middle cerebral artery territory infarction. We believe our case was most likely to have been an infarct-induced MA. To conclude, it is crucial to rule out cerebral infarction in cases where a patient experiences an atypical aura even in the context of established migraine.
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Affiliation(s)
- B Hebant
- Department of Neurology, Rouen University Hospital and University of Rouen, Rouen, France
| | - L Simmonet
- Department of Neurology, Rouen University Hospital and University of Rouen, Rouen, France
| | - J Le Moal
- Department of Neuroradiology, Rouen University Hospital and University of Rouen, Rouen, France
| | - E Guegan-Massardier
- Department of Neurology, Rouen University Hospital and University of Rouen, Rouen, France
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Breiding PS, Kellner-Weldon F, Grunder L, Scutelnic A, Fischer U, Meinel TR, Slavova N, Gralla J, El-Koussy M, Denier N. Quantification of cerebral veins in patients with acute migraine with aura: A fully automated quantification algorithm using susceptibility-weighted imaging. PLoS One 2020; 15:e0233992. [PMID: 32492059 PMCID: PMC7269254 DOI: 10.1371/journal.pone.0233992] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 05/16/2020] [Indexed: 12/02/2022] Open
Abstract
Introduction Susceptibility weighted imaging (SWI) is a very sensitive technique that often depicts prominent focal veins (PFV) in patients with acute migraine with aura (MwA). Interpretation of visual venous asymmetry (VVA) between brain hemispheres on SWI may help support the clinical diagnosis of MwA. Our goal was to develop an automated algorithm for segmentation and quantification of cerebral veins using SWI. Materials and methods Expert readers visually evaluated SWI of patients with acute MwA for VVA. Subsequently a fully automated algorithm based on 3D normalization and 2D imaging processing using SPM and MATLAB image processing software including top-hat transform was used to quantify cerebral veins and to calculate volumetric differences between hemispheres. Results Fifty patients with MwA were examined with SWI. VVA was present in 20 of 50 patients (40%). In 95% of patients with VVA, the fully automated calculation agreed with the side that visually harboured more PFV. Our algorithm showed a sensitivity of 95%, specificity of 90% and accuracy of 92% for detecting VVA. Patients with VVA had significantly larger vein volume on the hemisphere with more PFV compared to patients without (15.90 ± 5.38 ml vs 11.93 ± 5.31 ml; p = 0.013). The mean difference in venous volume between hemispheres in patients with VVA was larger compared to patients without VVA (16.34 ± 7.76% vs 4.31 ± 3.26% p < 1E-10). The average time between aura onset and SWI correlated negatively with venous volume of the dominant brain hemisphere (r = -0.348; p = 0.038). Conclusion A fully automated algorithm can accurately identify and quantify cerebral venous distribution on SWI. Absolute quantification may be useful for the future assessment of patients with suspected diseases, which may be associated with a unilateral abnormal degree of venous oxygenation.
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Affiliation(s)
- Philipe Sebastian Breiding
- Institute of Diagnostic and Interventional Radiology, Cantonal Hospital Frauenfeld, Spital Thurgau AG, Frauenfeld, Switzerland
- * E-mail:
| | - Frauke Kellner-Weldon
- Institute of Diagnostic and Interventional Radiology, Cantonal Hospital Luzern, Luzern, Switzerland
- Support Center for Advanced Neuroimaging (SCAN), University Institute of Diagnostic and Interventional Neuroradiology, University of Bern, Inselspital, Bern, Switzerland
| | - Lorenz Grunder
- University Institute of Diagnostic and Interventional Radiology, University of Bern, Inselspital, Bern, Switzerland
| | - Adrian Scutelnic
- Department of Neurology, University of Bern, Inselspital, Bern, Switzerland
| | - Urs Fischer
- Department of Neurology, University of Bern, Inselspital, Bern, Switzerland
| | | | - Nedelina Slavova
- Support Center for Advanced Neuroimaging (SCAN), University Institute of Diagnostic and Interventional Neuroradiology, University of Bern, Inselspital, Bern, Switzerland
- University Institute of Diagnostic and Interventional Neuroradiology, University of Bern, Inselspital, Bern, Switzerland
| | - Jan Gralla
- University Institute of Diagnostic and Interventional Neuroradiology, University of Bern, Inselspital, Bern, Switzerland
| | - Marwan El-Koussy
- Support Center for Advanced Neuroimaging (SCAN), University Institute of Diagnostic and Interventional Neuroradiology, University of Bern, Inselspital, Bern, Switzerland
- University Institute of Diagnostic and Interventional Neuroradiology, University of Bern, Inselspital, Bern, Switzerland
| | - Niklaus Denier
- Support Center for Advanced Neuroimaging (SCAN), University Institute of Diagnostic and Interventional Neuroradiology, University of Bern, Inselspital, Bern, Switzerland
- Department of Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland
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Slavova N, Denier N, El-Koussy M, Wiest R, Kellner-Weldon F, Fischer U, Schankin CJ. The index vein pointing to the origin of the migraine aura symptom. Neurology 2020; 94:e2577-e2580. [DOI: 10.1212/wnl.0000000000009493] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Accepted: 12/05/2019] [Indexed: 11/15/2022] Open
Abstract
ObjectiveThis case series describes and discusses the potential clinical utility of a prominent vein (index vein) found on susceptibility-weighted MRI during migraine aura that drains the cortical area responsible for patients' symptoms.MethodsSix patients with acute migraine aura had a prominent draining sulcal vein on emergency MRI done initially for suspected stroke. The location of the prominent vein was correlated to patients' symptoms, and the diameter was compared to the corresponding contralateral vein.ResultsIn our patients with typical migraine aura, an accentuated sulcal vein pointed towards the cortical area correlating with the clinical presentation. Such an index vein outstands the ipsilateral area of hypoperfusion and exceeds the corresponding contralateral vessel in diameter by a factor 2.0 ± 1.6 (mean ± SD).ConclusionThis case series provides a definition of an index vein in MRI pointing to the area where the patients' symptoms originate. Although confirmation in a larger systematic study is necessary, the presence of such an index vein might support that, in patients with an acute neurologic deficit, migraine aura is the underlying etiology.
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Antonucci MU, Yazdani M. A Helpful Tool in Diagnosing Stroke Mimics: Arterial Spin Labeled Perfusion Magnetic Resonance Imaging. J Emerg Med 2020; 58:439-443. [PMID: 32197894 DOI: 10.1016/j.jemermed.2019.12.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 12/10/2019] [Accepted: 12/16/2019] [Indexed: 11/25/2022]
Abstract
BACKGROUND Prompt and effective management of acute ischemic stroke in the emergency setting requires a high level of suspicion and accurate diagnosis. Conversely, identifying stroke mimics can be challenging, given the similarity of their clinical symptomatology, the necessary rapid assessment and triage, and the overall frenetic pace inherent in the goal of rapid thrombolysis ("time is brain"). CASE REPORT We describe a case that involves an elderly patient with acute hemiplegia and dysarthria. Given these concerning symptoms, and multiple preexisting cerebrovascular risk factors (including paroxysmal atrial fibrillation), a "stroke alert" was issued. Imaging was negative for infarct and she was ultimately diagnosed with hemiplegic migraine based on her symptoms and impressive findings on a novel magnetic resonance sequence called arterial spin labeled (ASL) perfusion. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Identifying a nonischemic etiology in a presumed stroke patient, while often difficult, can obviate unnecessary treatment, improve patient care, and promote appropriate resource allocation. As imaging and treatment of cerebrovascular disease advances, the optimization of multidisciplinary care should incorporate neuroradiologists informing and availing their clinical colleagues of applications of an ever-expanding imaging armamentarium. This case is an excellent example of both a common challenging stroke mimic and the potential benefits of ASL perfusion imaging in refining and expediting accurate diagnosis. In addition, it serves as a more general introduction to the particular strengths of this noninvasive, noncontrast magnetic resonance technique, which can be employed to assess varied emergent neuropathology.
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Affiliation(s)
- Michael U Antonucci
- Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, South Carolina
| | - Milad Yazdani
- Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, South Carolina
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21
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Michels L, Villanueva J, O'Gorman R, Muthuraman M, Koirala N, Büchler R, Gantenbein AR, Sandor PS, Luechinger R, Kollias S, Riederer F. Interictal Hyperperfusion in the Higher Visual Cortex in Patients With Episodic Migraine. Headache 2019; 59:1808-1820. [PMID: 31680242 DOI: 10.1111/head.13646] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/06/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND Migraine pathophysiology is complex and probably involves cortical and subcortical alterations. Structural and functional brain imaging studies indicate alterations in the higher order visual cortex in patients with migraine. Arterial spin labeling magnetic resonance imaging (ASL-MRI) is a non-invasive imaging method for assessing changes in cerebral blood flow (CBF) in vivo. OBJECTIVE To examine if interictal CBF differs between patients with episodic migraine (EM) with or without aura and healthy controls (HC). METHODS We assessed interictal CBF using 2D pseudo-continuous ASL-MRI on a 3 Tesla Philips scanner (University Hospital Zurich, Switzerland) in EM (N = 17, mean age 32.7 ± 9.9, 13 females) and HC (N = 19, mean age 31.0 ± 9.3, 11 females). RESULTS Compared to HC, EM showed exclusively hyperperfusion in the right MT+ and Cohen's d effect size was 0.99 (HC mean CBF ± SD: 33.1 ± 5.9 mL/100 g/minutes; EM mean CBF: 40.9 ± 9.4 mL/100 g/minutes). EM with aura (N = 13, MwA) revealed hyperperfusion compared to HC in the right MT+ and superior temporal gyrus. For MT, Cohen's d effect size was 1.34 (HC mean CBF ± SD: 33.1 ± 5.9 mL/100 g/minutes; MwA mean CBF: 43.3 ± 8.6 mL/100 g/minutes). For the superior temporal gyrus, Cohen's d effect size was 1.28 (HC mean CBF ± SD: 40.1 ± 4.9 mL/100 g/minutes; MwA mean CBF: 47.4 ± 6.4 mL/100 g/minutes). In EM, anxiety was positively associated with CBF in the parietal operculum and angular gyrus. CONCLUSIONS Our results suggest that extrastriate brain regions probably involved in cortical spreading depression are associated with CBF changes in the interictal state. We conclude that ASL-MRI is a sensitive method to identify local neuro-functional abnormalities in CBF in patients with EM in the interictal state.
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Affiliation(s)
- Lars Michels
- Department of Neuroradiology, University Hospital Zurich, Zurich, Switzerland.,Center for MR-Research, University Children's Hospital Zurich, Zurich, Switzerland
| | - Jeanette Villanueva
- Department of Neuroradiology, University Hospital Zurich, Zurich, Switzerland
| | - Ruth O'Gorman
- Center for MR-Research, University Children's Hospital Zurich, Zurich, Switzerland
| | - Muthuraman Muthuraman
- Biomedical Statistics and Multimodal Signal Processing Unit, Movement Disorders and Neurostimulation, Department of Neurology, Focus Program Translational Neuroscience (FTN), Johannes-Gutenberg-University Hospital, Mainz, Germany
| | - Nabin Koirala
- Biomedical Statistics and Multimodal Signal Processing Unit, Movement Disorders and Neurostimulation, Department of Neurology, Focus Program Translational Neuroscience (FTN), Johannes-Gutenberg-University Hospital, Mainz, Germany
| | - Roman Büchler
- Department of Neuroradiology, University Hospital Zurich, Zurich, Switzerland
| | - Andreas R Gantenbein
- University of Zurich, Zurich, Switzerland.,RehaClinic Bad Zurzach, Bad Zurzach, Switzerland
| | - Peter S Sandor
- University of Zurich, Zurich, Switzerland.,RehaClinic Bad Zurzach, Bad Zurzach, Switzerland
| | - Roger Luechinger
- Institute for Biomedical Engineering, ETH Zurich and University of Zurich, Zurich, Switzerland
| | - Spyros Kollias
- Department of Neuroradiology, University Hospital Zurich, Zurich, Switzerland
| | - Franz Riederer
- University of Zurich, Zurich, Switzerland.,Neurological Center Rosenhuegel and Karl Landsteiner Institute for Epilepsy Research and Cognitive Neurology, Vienna, Austria
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Sansone M, Marinelli G, Piccotti E, Severino M, Nobili L. Cerebral blood flow in a case of typical aura without headache. J Neurol 2019; 266:2869-2871. [PMID: 31375989 DOI: 10.1007/s00415-019-09487-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/24/2019] [Accepted: 07/26/2019] [Indexed: 10/26/2022]
Affiliation(s)
- Miriam Sansone
- Child Neuropsychiatry Unit, IRCCS G. Gaslini Children's Hospital, Genoa, Italy
| | - Guido Marinelli
- Department of Pediatric Emergency, IRCCS G. Gaslini Children's Hospital, Genoa, Italy
| | - Emanuela Piccotti
- Department of Pediatric Emergency, IRCCS G. Gaslini Children's Hospital, Genoa, Italy
| | | | - Lino Nobili
- Child Neuropsychiatry Unit, IRCCS G. Gaslini Children's Hospital, Genoa, Italy. .,Department of Neuroscience, Ophthalmology, Genetics and Maternal Infantile Sciences (DINOGMI), University of Genoa, Genoa, Italy.
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23
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Ellingson BM, Hesterman C, Johnston M, Dudeck NR, Charles AC, Villablanca JP. Advanced Imaging in the Evaluation of Migraine Headaches. Neuroimaging Clin N Am 2019; 29:301-324. [PMID: 30926119 PMCID: PMC8765285 DOI: 10.1016/j.nic.2019.01.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The use of advanced imaging in routine diagnostic practice appears to provide only limited value in patients with migraine who have not experienced recent changes in headache characteristics or symptoms. However, advanced imaging may have potential for studying the biological manifestations and pathophysiology of migraine headaches. Migraine with aura appears to have characteristic spatiotemporal changes in structural anatomy, function, hemodynamics, metabolism, and biochemistry, whereas migraine without aura produces more subtle and complex changes. Large, controlled, multicenter imaging-based observational trials are needed to confirm the anecdotal evidence in the literature and test the scientific hypotheses thought to underscore migraine pathophysiology.
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Affiliation(s)
- Benjamin M Ellingson
- UCLA Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, 924 Westwood Boulevard, Suite 615, Los Angeles, CA 90024, USA; Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, 924 Westwood Boulevard, Suite 615, Los Angeles, CA 90024, USA; Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California Los Angeles, 760 Westwood Plaza, Los Angeles, CA 90095, USA; UCLA Brain Research Institute (BRI), David Geffen School of Medicine, University of California Los Angeles, 695 Charles E Young Dr S, Los Angeles, CA 90095, USA; UCLA Brain Tumor Imaging Laboratory (BTIL), Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, 924 Westwood Boulevard, Suite 615, Los Angeles, CA 90024, USA; UCLA Brain Tumor Imaging Laboratory (BTIL), Department of Psychiatry, David Geffen School of Medicine, University of California, Los Angeles, 924 Westwood Boulevard, Suite 615, Los Angeles, CA 90024, USA.
| | - Chelsea Hesterman
- Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, 710 Westwood Plaza, Los Angeles, CA 90095-1769, USA
| | - Mollie Johnston
- Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, 710 Westwood Plaza, Los Angeles, CA 90095-1769, USA
| | - Nicholas R Dudeck
- UCLA Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, 924 Westwood Boulevard, Suite 615, Los Angeles, CA 90024, USA; Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, 924 Westwood Boulevard, Suite 615, Los Angeles, CA 90024, USA
| | - Andrew C Charles
- Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, 710 Westwood Plaza, Los Angeles, CA 90095-1769, USA
| | - Juan Pablo Villablanca
- Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, 924 Westwood Boulevard, Suite 615, Los Angeles, CA 90024, USA
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24
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Nersesyan N, Arnold S, Krieg P. Susceptibility-Weighted Imaging Findings in Patients Suffering from Migraine with Aura. Clin Neuroradiol 2019; 29:783-785. [PMID: 30887092 DOI: 10.1007/s00062-019-00775-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 03/01/2019] [Indexed: 11/25/2022]
Affiliation(s)
- Nerses Nersesyan
- Dept. Radiology, Hospital Clínico Universitario de Valencia, Av. de Blasco Ibáñez, 17, 46010, València, Spain.
| | - Sebastian Arnold
- Dept. Radiology, Section Neuroradiology, Städtisches Klinikum Karlsruhe, Moltkestraße 90, 76133, Karlsruhe, Germany
| | - Peter Krieg
- Dept. Pediatrics, Städtisches Klinikum Karlsruhe, Moltkestraße 90, 76133, Karlsruhe, Germany
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Non-invasive assessment of placental perfusion in vivo using arterial spin labeling (ASL) MRI: A preclinical study in rats. Placenta 2019; 77:39-45. [PMID: 30827354 DOI: 10.1016/j.placenta.2019.01.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 01/13/2019] [Accepted: 01/21/2019] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Non-invasive assessment of placental perfusion is of great interest to characterize placental function in clinical practice. This article proposes a strictly non-invasive MRI technique using ASL to quantify placental blood flow in vivo. The aim of this study was to develop a fMRI tool to quantify placental blood flow (PBF) in rat, by using arterial spin labeling (ASL) MRI at 4.7 T. MATERIALS AND METHODS MRI was performed with a dedicated magnet for small animals, in pregnant rats on day 20 of the 22-day gestation period. A Look-Locker flow-sensitive alternating inversion recovery gradient echo sequence was developed as ASL technique (TE: 1.55 ms; TR: 3.5 ms, TI: 56 ms, deltaTI: 56 ms, FA: 20°, Matrix: 128 × 128, 8 segments, 4 Nex). Labeling was performed with global and slice-selective inversions, and T1 map was obtained for each mode of inversion. PBF was then derived from a compartmental model of the variation of T1 between global and slice-selective inversions. RESULTS The full protocol was completed and ASL image post-processing was successful in 18 rats. Forty-seven placentas were analyzed, with a mean PBF of 147 ± 70 ml/min/100 g of placenta, consistent with published values of placental perfusion using invasive techniques. CONCLUSION ASL MRI is feasible for the quantification of PBF in rats at 4.7 T. This technique, which requires no administration of contrast media, could have implications for non-invasive longitudinal and in vivo animal studies and may be useful for the management of human pregnancies.
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Magnetic resonance imaging of arterial stroke mimics: a pictorial review. Insights Imaging 2018; 9:815-831. [PMID: 29934921 PMCID: PMC6206386 DOI: 10.1007/s13244-018-0637-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/23/2018] [Accepted: 05/14/2018] [Indexed: 12/18/2022] Open
Abstract
Acute ischaemic stroke represents the most common cause of new sudden neurological deficit, but other diseases mimicking stroke happen in about one-third of the cases. Magnetic resonance imaging (MRI) is the best technique to identify those 'stroke mimics'. In this article, we propose a diagnostic approach of those stroke mimics on MRI according to an algorithm based on diffusion-weighted imaging (DWI), which can be abnormal or normal, followed by the results of other common additional MRI sequences, such as T2 with gradient recalled echo weighted imaging (T2-GRE) and fluid-attenuated inversion recovery (FLAIR). Analysis of the signal intensity of the parenchyma, the intracranial arteries and, overall, of the veins, is crucial on T2-GRE, while anatomic distribution of the parenchymal lesions is essential on FLAIR. Among stroke mimics with abnormal DWI, T2-GRE demonstrates obvious abnormalities in case of intracerebral haemorrhage or cerebral amyloid angiopathy, but this sequence also allows to propose alternative diagnoses when DWI is negative, such as in migraine aura or headaches with associated neurological deficits and lymphocytosis (HaNDL), in which cortical venous prominence is observed at the acute phase on T2-GRE. FLAIR is also of major interest when DWI is positive by better showing evocative distribution of cerebral lesions in case of seizure (involving the hippocampus, pulvinar and cortex), hypoglycaemia (bilateral lesions in the posterior limb of the internal capsules, corona radiata, striata or splenium of the corpus callosum) or in posterior reversible encephalopathy syndrome (PRES). Other real stroke mimics such as mitochondrial myopathy, encephalopathy, lactic acidosis, stroke-like episodes (MELAS), Susac's syndrome, brain tumour, demyelinating diseases and herpes simplex encephalitis are also included in our detailed and practical algorithm. KEY POINTS: • About 30% of sudden neurological deficits are due to non-ischaemic causes. • MRI is the best technique to identify stroke mimics. • Our practical illustrated algorithm based on DWI helps to recognise stroke mimics.
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Cobb-Pitstick KM, Munjal N, Safier R, Cummings DD, Zuccoli G. Time Course of Cerebral Perfusion Changes in Children with Migraine with Aura Mimicking Stroke. AJNR Am J Neuroradiol 2018; 39:1751-1755. [PMID: 29903927 DOI: 10.3174/ajnr.a5693] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 04/11/2018] [Indexed: 11/07/2022]
Abstract
Hemiplegic migraine is a common cause of acute brain attack in pediatrics. MR imaging sequences useful in differentiating hemiplegic migraine from other entities include arterial spin-labeling, SWI, MRA, and DWI. There has been limited exploration on the simultaneous use of these sequences in pediatrics. We present 12 pediatric patients with acute hemiplegic migraine or migraine with aura who underwent MR imaging within 12 hours of symptom onset. Quantitative and qualitative analyses were performed on arterial spin-labeling; and qualitative analysis, on SWI and MRA sequences. All 12 patients had normal DWI and abnormal arterial spin-labeling findings. Furthermore, we observed a more rapid transition from hypoperfusion to rebound hyperperfusion in 3 patients compared with prior reports. These findings support the use of multimodal MR imaging to distinguish migraine with aura from stroke and the simultaneous use of these MR imaging sequences to improve understanding of perfusion changes during migraine with aura.
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Affiliation(s)
- K M Cobb-Pitstick
- From the Department of Pediatrics (K.M.C.-P., N.M., R.S., D.D.C.), Division of Child Neurology
| | - N Munjal
- From the Department of Pediatrics (K.M.C.-P., N.M., R.S., D.D.C.), Division of Child Neurology
| | - R Safier
- From the Department of Pediatrics (K.M.C.-P., N.M., R.S., D.D.C.), Division of Child Neurology
| | - D D Cummings
- From the Department of Pediatrics (K.M.C.-P., N.M., R.S., D.D.C.), Division of Child Neurology
| | - G Zuccoli
- Division of Pediatric Neuroradiology (G.Z.), Children's Hospital of Pittsburgh of University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
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Arterial Spin Labeling Cerebral Perfusion Magnetic Resonance Imaging in Migraine Aura: An Observational Study. J Stroke Cerebrovasc Dis 2018; 27:1262-1266. [PMID: 29331612 DOI: 10.1016/j.jstrokecerebrovasdis.2017.12.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 10/27/2017] [Accepted: 12/03/2017] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Changes in cerebral perfusion during migraine with aura (MA) have been assessed mainly using dynamic susceptibility contrast (DSC) magnetic resonance perfusion imaging. A contrast agent-free method to assess these changes would be desirable. We assessed changes in cerebral perfusion during MA using arterial spin labeling (ASL) perfusion magnetic resonance imaging. METHODS We investigated 4 patients with a standardized protocol including ASL perfusion imaging during MA (n = 2) or early headache phase (n = 2) and asymptomatic follow-up. Semiquantitative evaluation was done using a region of interest (ROI) within hypoperfused or hyperperfused areas and corresponding ROIs in the contralateral hemisphere. Relative ratios of mean perfusion in the corresponding ROIs were calculated. DSC imaging was done at initial time points and compared visually with ASL findings. RESULTS In all patients, regional perfusion changes were detected in the acute phase. These abnormalities did not respect the boundaries of major cerebral vascular territories but overlapped onto adjoining regions. During MA, adjacent hypoperfused and hyperperfused areas were found, whereas during headache, regional hyperperfusion only was observed. Perfusion abnormalities normalized on follow-up. CONCLUSIONS ASL perfusion imaging is a contrast agent-free method suitable for assessment of reversible perfusion changes during or immediately after MA.
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Fujita K, Osaki Y, Miyamoto R, Shimatani Y, Abe T, Sumikura H, Murayama S, Izumi Y, Kaji R. Neurologic attack and dynamic perfusion abnormality in neuronal intranuclear inclusion disease. Neurol Clin Pract 2017; 7:e39-e42. [PMID: 29431160 DOI: 10.1212/cpj.0000000000000389] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Koji Fujita
- Institute of Biomedical Sciences (KF, YO, RM, YS, TA, YI, RK), Tokushima University Graduate School, Tokushima; and Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology (HS, SM), Tokyo, Japan
| | - Yusuke Osaki
- Institute of Biomedical Sciences (KF, YO, RM, YS, TA, YI, RK), Tokushima University Graduate School, Tokushima; and Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology (HS, SM), Tokyo, Japan
| | - Ryosuke Miyamoto
- Institute of Biomedical Sciences (KF, YO, RM, YS, TA, YI, RK), Tokushima University Graduate School, Tokushima; and Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology (HS, SM), Tokyo, Japan
| | - Yoshimitsu Shimatani
- Institute of Biomedical Sciences (KF, YO, RM, YS, TA, YI, RK), Tokushima University Graduate School, Tokushima; and Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology (HS, SM), Tokyo, Japan
| | - Takashi Abe
- Institute of Biomedical Sciences (KF, YO, RM, YS, TA, YI, RK), Tokushima University Graduate School, Tokushima; and Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology (HS, SM), Tokyo, Japan
| | - Hiroyuki Sumikura
- Institute of Biomedical Sciences (KF, YO, RM, YS, TA, YI, RK), Tokushima University Graduate School, Tokushima; and Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology (HS, SM), Tokyo, Japan
| | - Shigeo Murayama
- Institute of Biomedical Sciences (KF, YO, RM, YS, TA, YI, RK), Tokushima University Graduate School, Tokushima; and Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology (HS, SM), Tokyo, Japan
| | - Yuishin Izumi
- Institute of Biomedical Sciences (KF, YO, RM, YS, TA, YI, RK), Tokushima University Graduate School, Tokushima; and Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology (HS, SM), Tokyo, Japan
| | - Ryuji Kaji
- Institute of Biomedical Sciences (KF, YO, RM, YS, TA, YI, RK), Tokushima University Graduate School, Tokushima; and Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology (HS, SM), Tokyo, Japan
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Hougaard A, Amin FM, Christensen CE, Younis S, Wolfram F, Cramer SP, Larsson HBW, Ashina M. Increased brainstem perfusion, but no blood-brain barrier disruption, during attacks of migraine with aura. Brain 2017; 140:1633-1642. [PMID: 28430860 DOI: 10.1093/brain/awx089] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 02/24/2017] [Indexed: 01/03/2023] Open
Abstract
See Moskowitz (doi:10.1093/brain/awx099) for a scientific commentary on this article.The migraine aura is characterized by transient focal cortical disturbances causing dramatic neurological symptoms that are usually followed by migraine headache. It is currently not understood how the aura symptoms are related to the headache phase of migraine. Animal studies suggest that cortical spreading depression, the likely mechanism of migraine aura, causes disruption of the blood-brain barrier and noxious stimulation of trigeminal afferents leading to activation of brainstem nuclei and triggering of migraine headache. We used the sensitive and validated technique of dynamic contrast-enhanced high-field magnetic resonance imaging to simultaneously investigate blood-brain barrier permeability and tissue perfusion in the brainstem (at the level of the lower pons), visual cortex, and brain areas of the anterior, middle and posterior circulation during spontaneous attacks of migraine with aura. Patients reported to our institution to undergo magnetic resonance imaging during the headache phase after presenting with typical visual aura. Nineteen patients were scanned during attacks and on an attack-free day. The mean time from attack onset to scanning was 7.6 h. We found increased brainstem perfusion bilaterally during migraine with aura attacks. Perfusion also increased in the visual cortex and posterior white matter following migraine aura. We found no increase in blood-brain barrier permeability in any of the investigated regions. There was no correlation between blood-brain barrier permeability, brain perfusion, and time from symptom onset to examination or pain intensity. Our findings demonstrate hyperperfusion in brainstem during the headache phase of migraine with aura, while the blood-brain barrier remains intact during attacks of migraine with aura. These data thus contradict the preclinical hypothesis of cortical spreading depression-induced blood-brain barrier disruption as a possible mechanism linking aura and headache.awx089media15422686892001.
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Affiliation(s)
- Anders Hougaard
- Danish Headache Center and Department of Neurology, Rigshospitalet Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Faisal M Amin
- Danish Headache Center and Department of Neurology, Rigshospitalet Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Casper E Christensen
- Danish Headache Center and Department of Neurology, Rigshospitalet Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Samaira Younis
- Danish Headache Center and Department of Neurology, Rigshospitalet Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Frauke Wolfram
- Department of Radiology, Rigshospitalet, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Stig P Cramer
- Functional Imaging Unit, Department of Clinical Physiology, Nuclear Medicine and PET, Rigshospitalet, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Henrik B W Larsson
- Functional Imaging Unit, Department of Clinical Physiology, Nuclear Medicine and PET, Rigshospitalet, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.,Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Messoud Ashina
- Danish Headache Center and Department of Neurology, Rigshospitalet Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.,Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
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31
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Utility of Arterial Spin Labeling MRI in Pediatric Neuroimaging: A Pictorial Essay. CURRENT RADIOLOGY REPORTS 2017. [DOI: 10.1007/s40134-017-0232-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Haller S, Zaharchuk G, Thomas DL, Lovblad KO, Barkhof F, Golay X. Arterial Spin Labeling Perfusion of the Brain: Emerging Clinical Applications. Radiology 2017; 281:337-356. [PMID: 27755938 DOI: 10.1148/radiol.2016150789] [Citation(s) in RCA: 332] [Impact Index Per Article: 47.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Arterial spin labeling (ASL) is a magnetic resonance (MR) imaging technique used to assess cerebral blood flow noninvasively by magnetically labeling inflowing blood. In this article, the main labeling techniques, notably pulsed and pseudocontinuous ASL, as well as emerging clinical applications will be reviewed. In dementia, the pattern of hypoperfusion on ASL images closely matches the established patterns of hypometabolism on fluorine 18 fluorodeoxyglucose (FDG) positron emission tomography (PET) images due to the close coupling of perfusion and metabolism in the brain. This suggests that ASL might be considered as an alternative for FDG, reserving PET to be used for the molecular disease-specific amyloid and tau tracers. In stroke, ASL can be used to assess perfusion alterations both in the acute and the chronic phase. In arteriovenous malformations and dural arteriovenous fistulas, ASL is very sensitive to detect even small degrees of shunting. In epilepsy, ASL can be used to assess the epileptogenic focus, both in peri- and interictal period. In neoplasms, ASL is of particular interest in cases in which gadolinium-based perfusion is contraindicated (eg, allergy, renal impairment) and holds promise in differentiating tumor progression from benign causes of enhancement. Finally, various neurologic and psychiatric diseases including mild traumatic brain injury or posttraumatic stress disorder display alterations on ASL images in the absence of visualized structural changes. In the final part, current limitations and future developments of ASL techniques to improve clinical applicability, such as multiple inversion time ASL sequences to assess alterations of transit time, reproducibility and quantification of cerebral blood flow, and to measure cerebrovascular reserve, will be reviewed. © RSNA, 2016 Online supplemental material is available for this article.
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Affiliation(s)
- Sven Haller
- From Affidea Centre Diagnostique Radiologique de Carouge, Clos de la Fonderie 1, 1227 Carouge, Switzerland (S.H.); Dept of Surgical Sciences, Div of Radiology, Uppsala Univ, Sweden (S.H.); Dept of Neuroradiology, Univ Hosp Freiburg, Germany (S.H.); Faculty of Medicine Univ of Geneva, Switzerland (S.H.); Dept of Radiology, Stanford Univ, Stanford, Calif (G.Z.); Univ College London, Inst of Neurology, London, England (D.L.T., X.G.); Dept of Diagnostic and Interventional Neuroradiology, Geneva Univ Hosps,Switzerland (K.O.L.); Dept of Radiology & Nuclear Medicine and PET Research, VU Univ Medical Ctr, Amsterdam, the Netherlands (F.B.); and Insts of Neurology and Healthcare Engineering, Univ College London, England (F.B.)
| | - Greg Zaharchuk
- From Affidea Centre Diagnostique Radiologique de Carouge, Clos de la Fonderie 1, 1227 Carouge, Switzerland (S.H.); Dept of Surgical Sciences, Div of Radiology, Uppsala Univ, Sweden (S.H.); Dept of Neuroradiology, Univ Hosp Freiburg, Germany (S.H.); Faculty of Medicine Univ of Geneva, Switzerland (S.H.); Dept of Radiology, Stanford Univ, Stanford, Calif (G.Z.); Univ College London, Inst of Neurology, London, England (D.L.T., X.G.); Dept of Diagnostic and Interventional Neuroradiology, Geneva Univ Hosps,Switzerland (K.O.L.); Dept of Radiology & Nuclear Medicine and PET Research, VU Univ Medical Ctr, Amsterdam, the Netherlands (F.B.); and Insts of Neurology and Healthcare Engineering, Univ College London, England (F.B.)
| | - David L Thomas
- From Affidea Centre Diagnostique Radiologique de Carouge, Clos de la Fonderie 1, 1227 Carouge, Switzerland (S.H.); Dept of Surgical Sciences, Div of Radiology, Uppsala Univ, Sweden (S.H.); Dept of Neuroradiology, Univ Hosp Freiburg, Germany (S.H.); Faculty of Medicine Univ of Geneva, Switzerland (S.H.); Dept of Radiology, Stanford Univ, Stanford, Calif (G.Z.); Univ College London, Inst of Neurology, London, England (D.L.T., X.G.); Dept of Diagnostic and Interventional Neuroradiology, Geneva Univ Hosps,Switzerland (K.O.L.); Dept of Radiology & Nuclear Medicine and PET Research, VU Univ Medical Ctr, Amsterdam, the Netherlands (F.B.); and Insts of Neurology and Healthcare Engineering, Univ College London, England (F.B.)
| | - Karl-Olof Lovblad
- From Affidea Centre Diagnostique Radiologique de Carouge, Clos de la Fonderie 1, 1227 Carouge, Switzerland (S.H.); Dept of Surgical Sciences, Div of Radiology, Uppsala Univ, Sweden (S.H.); Dept of Neuroradiology, Univ Hosp Freiburg, Germany (S.H.); Faculty of Medicine Univ of Geneva, Switzerland (S.H.); Dept of Radiology, Stanford Univ, Stanford, Calif (G.Z.); Univ College London, Inst of Neurology, London, England (D.L.T., X.G.); Dept of Diagnostic and Interventional Neuroradiology, Geneva Univ Hosps,Switzerland (K.O.L.); Dept of Radiology & Nuclear Medicine and PET Research, VU Univ Medical Ctr, Amsterdam, the Netherlands (F.B.); and Insts of Neurology and Healthcare Engineering, Univ College London, England (F.B.)
| | - Frederik Barkhof
- From Affidea Centre Diagnostique Radiologique de Carouge, Clos de la Fonderie 1, 1227 Carouge, Switzerland (S.H.); Dept of Surgical Sciences, Div of Radiology, Uppsala Univ, Sweden (S.H.); Dept of Neuroradiology, Univ Hosp Freiburg, Germany (S.H.); Faculty of Medicine Univ of Geneva, Switzerland (S.H.); Dept of Radiology, Stanford Univ, Stanford, Calif (G.Z.); Univ College London, Inst of Neurology, London, England (D.L.T., X.G.); Dept of Diagnostic and Interventional Neuroradiology, Geneva Univ Hosps,Switzerland (K.O.L.); Dept of Radiology & Nuclear Medicine and PET Research, VU Univ Medical Ctr, Amsterdam, the Netherlands (F.B.); and Insts of Neurology and Healthcare Engineering, Univ College London, England (F.B.)
| | - Xavier Golay
- From Affidea Centre Diagnostique Radiologique de Carouge, Clos de la Fonderie 1, 1227 Carouge, Switzerland (S.H.); Dept of Surgical Sciences, Div of Radiology, Uppsala Univ, Sweden (S.H.); Dept of Neuroradiology, Univ Hosp Freiburg, Germany (S.H.); Faculty of Medicine Univ of Geneva, Switzerland (S.H.); Dept of Radiology, Stanford Univ, Stanford, Calif (G.Z.); Univ College London, Inst of Neurology, London, England (D.L.T., X.G.); Dept of Diagnostic and Interventional Neuroradiology, Geneva Univ Hosps,Switzerland (K.O.L.); Dept of Radiology & Nuclear Medicine and PET Research, VU Univ Medical Ctr, Amsterdam, the Netherlands (F.B.); and Insts of Neurology and Healthcare Engineering, Univ College London, England (F.B.)
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Burns R, De Malherbe M, Chadenat ML, Pico F, Buch D. Arterial Spin-Labeled MR Imaging Detecting Biphasic Neurovascular Changes in Migraine With Persistent Aura. Headache 2017; 57:1627-1628. [DOI: 10.1111/head.13119] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 04/18/2017] [Accepted: 04/18/2017] [Indexed: 01/03/2023]
Affiliation(s)
- Robert Burns
- Neurology Department and Stroke Centre; Mignot Hospital; Le Chesnay France
| | - Maxine De Malherbe
- Radiology Department; Centre Hospitalier de Versailles; Le Chesnay France
| | | | - Fernando Pico
- Neurology Department and Stroke Centre; Mignot Hospital; Le Chesnay France
- Université de Versailles Saint-Quentin-en-Yvelines; Versailles France
- INSERM LVTS (Laboratory for Vascular Translational Science) 1148; Paris France
| | - Dan Buch
- Neurology Department and Stroke Centre; Mignot Hospital; Le Chesnay France
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Law-ye B, Fargeot G, Leclercq D. Arterial Spin Labeling Hypoperfusion in Migraine Aura. Headache 2017; 57:935-936. [DOI: 10.1111/head.13072] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Bruno Law-ye
- Department of Neuroradiology; APHP, Hospital Pitié-Salpêtrière; Paris France
- Pierre and Marie Curie Faculty of Medicine; Sorbonne Universités; Paris France
| | - Guillaume Fargeot
- Department of Neurology; APHP, Hospital Pitié-Salpêtrière; Paris France
| | - Delphine Leclercq
- Department of Neuroradiology; APHP, Hospital Pitié-Salpêtrière; Paris France
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ASL and susceptibility-weighted imaging contribution to the management of acute ischaemic stroke. Insights Imaging 2016; 8:91-100. [PMID: 27822669 PMCID: PMC5265193 DOI: 10.1007/s13244-016-0529-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 09/19/2016] [Accepted: 10/03/2016] [Indexed: 12/04/2022] Open
Abstract
Abstract Magnetic resonance imaging (MRI) plays a central role in the early diagnosis of cerebral vascular events. Today, MRI is used not only for the detection of acute ischaemic lesions, but also to fine tune the diagnosis and improve patient selection for early therapeutic decision-making. In this perspective, new tools such as arterial spin labelling (ASL) and susceptibility-weighted imaging (SWI) sequences have been developed. These MRI sequences enable noninvasive assessment of brain damage, providing important diagnostic and prognostic information: evaluation of cerebral parenchymal perfusion; detection and aetiological assessment of thrombi; ruling out differential diagnoses. After a brief recall of the fundamental basis of these sequences, this article proposes an update on their current contribution to the early management of stroke victims. Teaching Points • These noninvasive sequences provide essential information for early management of acute stroke. • They can detect zones of parenchymal hypoperfusion. • Susceptibility-weighted sequences provide information on thrombus localisation and composition. • ASL can identify certain aetiologies of stroke mimics. • Post-therapeutic ASL perfusion status predicts outcome.
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Suspected stroke in a pregnant woman: Usefulness of arterial spin labeling MRI sequences. Presse Med 2016; 45:794-6. [DOI: 10.1016/j.lpm.2016.06.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 02/13/2016] [Accepted: 06/06/2016] [Indexed: 11/18/2022] Open
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Boulouis G, Shotar E, Dangouloff-Ros V, Grévent D, Calmon R, Brunelle F, Naggara O, Kossorotoff M, Boddaert N. Magnetic resonance imaging arterial-spin-labelling perfusion alterations in childhood migraine with atypical aura: a case-control study. Dev Med Child Neurol 2016; 58:965-9. [PMID: 27060350 DOI: 10.1111/dmcn.13123] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/28/2016] [Indexed: 11/28/2022]
Abstract
AIM Atypical migraine with aura can be challenging to diagnose. Arterial-spin-labelling (ASL) is able to non-invasively quantify brain perfusion. Our aim was to report cerebral blood flow (CBF) alterations using ASL, at the acute phase of atypical migraine with aura in children. METHOD Paediatric patients were retrospectively included if (1) referred for acute neurological deficit(s), (2) underwent brain magnetic resonance imaging (MRI) at presentation with ASL sequence, and (3) had subsequent diagnosis of migraine with aura. Neurological symptom-free controls were matched for age. Twenty-eight regions of interest (ROIs) were drawn on CBF maps for each participant/control. RESULTS Ten patients were included (median age 13y, range 8-16y). Eight of 10 had multiple aura symptoms during the episode. For every patient, CBF was decreased in a brain region consistent with symptoms when MRI was performed less than 14 hours after onset (n=7 patients) and increased if the MRI was performed 17 hours or more after (n=4 MRIs). INTERPRETATION MRI-ASL appears to be a promising tool for the diagnostic workup and differentials exclusion in paediatric migraine with aura. Constant and time-consistent non-territorial CBF modifications were found in our sample providing additional insight to migraine with aura pathophysiology. The authors encourage implementing this sequence at the acute phase of unexplained paediatric neurological deficits, with or without accompanying headache.
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Affiliation(s)
- Grégoire Boulouis
- Pediatric Radiology Department, Hôpital Necker - Enfants Malades, INSERM UMR1163 and U1000, Institut Imagine, Université Paris Descartes - Sorbonne Paris Cité, Paris, France
| | - Eimad Shotar
- Pediatric Radiology Department, Hôpital Necker - Enfants Malades, INSERM UMR1163 and U1000, Institut Imagine, Université Paris Descartes - Sorbonne Paris Cité, Paris, France
| | - Volodia Dangouloff-Ros
- Pediatric Radiology Department, Hôpital Necker - Enfants Malades, INSERM UMR1163 and U1000, Institut Imagine, Université Paris Descartes - Sorbonne Paris Cité, Paris, France
| | - David Grévent
- Pediatric Radiology Department, Hôpital Necker - Enfants Malades, INSERM UMR1163 and U1000, Institut Imagine, Université Paris Descartes - Sorbonne Paris Cité, Paris, France
| | - Raphaël Calmon
- Pediatric Radiology Department, Hôpital Necker - Enfants Malades, INSERM UMR1163 and U1000, Institut Imagine, Université Paris Descartes - Sorbonne Paris Cité, Paris, France
| | - Francis Brunelle
- Pediatric Radiology Department, Hôpital Necker - Enfants Malades, INSERM UMR1163 and U1000, Institut Imagine, Université Paris Descartes - Sorbonne Paris Cité, Paris, France
| | - Olivier Naggara
- Pediatric Radiology Department, Hôpital Necker - Enfants Malades, INSERM UMR1163 and U1000, Institut Imagine, Université Paris Descartes - Sorbonne Paris Cité, Paris, France.,Department of Neuroradiology, Centre Hospitalier Sainte-Anne, INSERM U894, Université Paris Descartes, Paris, France
| | - Manoelle Kossorotoff
- Pediatric Neurology Department and French Center for Pediatric Stroke, APHP, Hôpital Necker -Enfants Malades, Paris, France
| | - Nathalie Boddaert
- Pediatric Radiology Department, Hôpital Necker - Enfants Malades, INSERM UMR1163 and U1000, Institut Imagine, Université Paris Descartes - Sorbonne Paris Cité, Paris, France
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Li TQ, Wang Y, Hallin R, Juto JE. Resting-state fMRI study of acute migraine treatment with kinetic oscillation stimulation in nasal cavity. NEUROIMAGE-CLINICAL 2016; 12:451-9. [PMID: 27622142 PMCID: PMC5008046 DOI: 10.1016/j.nicl.2016.08.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 07/22/2016] [Accepted: 08/13/2016] [Indexed: 12/17/2022]
Abstract
Kinetic oscillatory stimulation (KOS) in the nasal cavity is a non-invasive cranial nerve stimulation method with promising efficacy for acute migraine and other inflammatory disorders. For a better understanding of the underlying neurophysiological mechanisms of KOS treatment, we conducted a resting-state functional magnetic resonance imaging (fMRI) study of 10 acute migraine patients and 10 normal control subjects during KOS treatment in a 3 T clinical MRI scanner. The fMRI data were first processed using a group independent component analysis (ICA) method and then further analyzed with a voxel-wise 3-way ANOVA modeling and region of interest (ROI) of functional connectivity metrics. All migraine participants were relieved from their acute migraine symptoms after 10–20 min KOS treatment and remained migraine free for 3–6 months. The resting-state fMRI result indicates that migraine patients have altered intrinsic functional activity in the anterior cingulate, inferior frontal gyrus and middle/superior temporal gyrus. KOS treatment gave rise to up-regulated intrinsic functional activity for migraine patients in a number of brain regions involving the limbic and primary sensory systems, while down regulating temporally the activity for normal controls in a few brain areas, such as the right dorsal posterior insula and inferior frontal gyrus. The result of this study confirms the efficacy of KOS treatment for relieving acute migraine symptoms and reducing attack frequency. Resting-state fMRI measurements demonstrate that migraine is associated with aberrant intrinsic functional activity in the limbic and primary sensory systems. KOS in the nasal cavity gives rise to the adjustment of the intrinsic functional activity in the limbic and primary sensory networks and restores the physiological homeostasis in the autonomic nervous system. Efficacy and neurological mechanisms underlying kinetic oscillatory stimulation treatment of migraine Dependence of ICA (independent component analysis) results on the number of independent components. Modulation of ANS (autonomic nervous system) function via the limbic network
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Affiliation(s)
- Tie-Qiang Li
- Department of Medical Physics, Karolinska University Hospital Huddinge, Sweden; Department of Clinical Science, Intervention and Technology, Karolinska Institute, Stockholm, Sweden
| | - Yanlu Wang
- Department of Clinical Science, Intervention and Technology, Karolinska Institute, Stockholm, Sweden
| | - Rolf Hallin
- Department of Physiology and Pharmacology, Division of Clinical Neurophysiology, Karolinska University Hospital, Huddinge, Sweden
| | - Jan-Erik Juto
- Department of Clinical Science, Intervention and Technology, Karolinska Institute, Stockholm, Sweden
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Application of Arterial Spin Labelling in the Assessment of Ocular Tissues. BIOMED RESEARCH INTERNATIONAL 2016; 2016:6240504. [PMID: 27066501 PMCID: PMC4811053 DOI: 10.1155/2016/6240504] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 02/07/2016] [Indexed: 11/17/2022]
Abstract
Arterial spin labelling (ASL) is a noninvasive magnetic resonance imaging (MRI) modality, capable of measuring blood perfusion without the use of a contrast agent. While ASL implementation for imaging the brain and monitoring cerebral blood flow has been reviewed in depth, the technique is yet to be widely used for ocular tissue imaging. The human retina is a very thin but highly stratified structure and it is also situated close to the surface of the body which is not ideal for MR imaging. Hence, the application of MR imaging and ASL in particular has been very challenging for ocular tissues and retina. That is despite the fact that almost all of retinal pathologies are accompanied by blood perfusion irregularities. In this review article, we have focused on the technical aspects of the ASL and their implications for its optimum adaptation for retinal blood perfusion monitoring. Retinal blood perfusion has been assessed through qualitative or invasive quantitative methods but the prospect of imaging flow using ASL would increase monitoring and assessment of retinal pathologies. The review provides details of ASL application in human ocular blood flow assessment.
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Perfusion imaging insights into SMART syndrome: a case report. Acta Neurol Belg 2015; 115:807-10. [PMID: 25972059 DOI: 10.1007/s13760-015-0483-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 04/28/2015] [Indexed: 10/23/2022]
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Siauve N, Chalouhi GE, Deloison B, Alison M, Clement O, Ville Y, Salomon LJ. Functional imaging of the human placenta with magnetic resonance. Am J Obstet Gynecol 2015; 213:S103-14. [PMID: 26428488 DOI: 10.1016/j.ajog.2015.06.045] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 06/15/2015] [Accepted: 06/17/2015] [Indexed: 11/29/2022]
Abstract
Abnormal placentation is responsible for most failures in pregnancy; however, an understanding of placental functions remains largely concealed from noninvasive, in vivo investigations. Magnetic resonance imaging (MRI) is safe in pregnancy for magnetic fields of up to 3 Tesla and is being used increasingly to improve the accuracy of prenatal imaging. Functional MRI (fMRI) of the placenta has not yet been validated in a clinical setting, and most data are derived from animal studies. FMRI could be used to further explore placental functions that are related to vascularization, oxygenation, and metabolism in human pregnancies by the use of various enhancement processes. Dynamic contrast-enhanced MRI is best able to quantify placental perfusion, permeability, and blood volume fractions. However, the transplacental passage of Gadolinium-based contrast agents represents a significant safety concern for this procedure in humans. There are alternative contrast agents that may be safer in pregnancy or that do not cross the placenta. Arterial spin labeling MRI relies on magnetically labeled water to quantify the blood flows within the placenta. A disadvantage of this technique is a poorer signal-to-noise ratio. Based on arterial spin labeling, placental perfusion in normal pregnancy is 176 ± 91 mL × min(-1) × 100 g(-1) and decreases in cases with intrauterine growth restriction. Blood oxygen level-dependent and oxygen-enhanced MRIs do not assess perfusion but measure the response of the placenta to changes in oxygen levels with the use of hemoglobin as an endogenous contrast agent. Diffusion-weighted imaging and intravoxel incoherent motion MRI do not require exogenous contrast agents, instead they use the movement of water molecules within tissues. The apparent diffusion coefficient and perfusion fraction are significantly lower in placentas of growth-restricted fetuses when compared with normal pregnancies. Magnetic resonance spectroscopy has the ability to extract information regarding metabolites from the placenta noninvasively and in vivo. There are marked differences in all 3 metabolites N-acetyl aspartate/choline levels, inositol/choline ratio between small, and adequately grown fetuses. Current research is focused on the ability of each fMRI technique to make a timely diagnosis of abnormal placentation that would allow for appropriate planning of follow-up examinations and optimal scheduling of delivery. These research programs will benefit from the use of well-defined sequences, standardized imaging protocols, and robust computational methods.
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Affiliation(s)
- Nathalie Siauve
- INSERM, U970, Sorbonne Paris Cite, Paris Cardiovascular Research Center-PARCC, Paris, France; EA FETUS and LUMIERE Unit, Université Paris-Descartes, Paris, France; Hôpital Européen Georges Pompidou, Paris, France
| | - Gihad E Chalouhi
- INSERM, U970, Sorbonne Paris Cite, Paris Cardiovascular Research Center-PARCC, Paris, France; EA FETUS and LUMIERE Unit, Université Paris-Descartes, Paris, France; Assistance Publique-Hôpitaux de Paris, Hôpital Necker-Enfants Malades, Paris, France
| | - Benjamin Deloison
- INSERM, U970, Sorbonne Paris Cite, Paris Cardiovascular Research Center-PARCC, Paris, France; EA FETUS and LUMIERE Unit, Université Paris-Descartes, Paris, France; Assistance Publique-Hôpitaux de Paris, Hôpital Necker-Enfants Malades, Paris, France
| | - Marianne Alison
- INSERM, U970, Sorbonne Paris Cite, Paris Cardiovascular Research Center-PARCC, Paris, France
| | - Olivier Clement
- INSERM, U970, Sorbonne Paris Cite, Paris Cardiovascular Research Center-PARCC, Paris, France; Hôpital Européen Georges Pompidou, Paris, France
| | - Yves Ville
- EA FETUS and LUMIERE Unit, Université Paris-Descartes, Paris, France; Assistance Publique-Hôpitaux de Paris, Hôpital Necker-Enfants Malades, Paris, France
| | - Laurent J Salomon
- INSERM, U970, Sorbonne Paris Cite, Paris Cardiovascular Research Center-PARCC, Paris, France; EA FETUS and LUMIERE Unit, Université Paris-Descartes, Paris, France; Assistance Publique-Hôpitaux de Paris, Hôpital Necker-Enfants Malades, Paris, France.
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Yger M, Villain N, Belkacem S, Bertrand A, Rosso C, Crozier S, Samson Y, Dormont D. [Contribution of arterial spin labeling to the diagnosis of sudden and transient neurological deficit]. Rev Neurol (Paris) 2014; 171:161-5. [PMID: 25555846 DOI: 10.1016/j.neurol.2014.10.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 08/31/2014] [Accepted: 10/08/2014] [Indexed: 10/24/2022]
Abstract
MRI is the gold standard exploration for sudden transient neurological events. If diffusion MRI is negative, there may be a diagnostic doubt between transient ischemic attack and other causes of transient neurological deficit. We illustrate how sequence arterial spin labeling (ASL), which evaluates cerebral perfusion, contributes to the exploration of transient neurological events. An ASL sequence was performed in seven patients with a normal diffusion MRI explored for a transient deficit. Cortical hyperperfusion not systematized to an arterial territory was found in three and hypoperfusion systematized to an arterial territory in four. ASL helped guide early management of these patients.
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Affiliation(s)
- M Yger
- Service d'urgences cérébrovasculaires, groupe hospitalier Pitié-Salpétrière, 47, boulevard de l'Hôpital, 75013 Paris, France.
| | - N Villain
- Service d'urgences cérébrovasculaires, groupe hospitalier Pitié-Salpétrière, 47, boulevard de l'Hôpital, 75013 Paris, France
| | - S Belkacem
- Service de neuroradiologie diagnostique et fonctionnelle, groupe hospitalier Pitié-Salpétrière, 47, boulevard de l'Hôpital, 75013 Paris, France
| | - A Bertrand
- Service de neuroradiologie diagnostique et fonctionnelle, groupe hospitalier Pitié-Salpétrière, 47, boulevard de l'Hôpital, 75013 Paris, France
| | - C Rosso
- Service d'urgences cérébrovasculaires, groupe hospitalier Pitié-Salpétrière, 47, boulevard de l'Hôpital, 75013 Paris, France
| | - S Crozier
- Service d'urgences cérébrovasculaires, groupe hospitalier Pitié-Salpétrière, 47, boulevard de l'Hôpital, 75013 Paris, France
| | - Y Samson
- Service d'urgences cérébrovasculaires, groupe hospitalier Pitié-Salpétrière, 47, boulevard de l'Hôpital, 75013 Paris, France
| | - D Dormont
- Service de neuroradiologie diagnostique et fonctionnelle, groupe hospitalier Pitié-Salpétrière, 47, boulevard de l'Hôpital, 75013 Paris, France
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Raffield LM, Cox AJ, Hugenschmidt CE, Freedman BI, Langefeld CD, Williamson JD, Hsu FC, Maldjian JA, Bowden DW. Heritability and genetic association analysis of neuroimaging measures in the Diabetes Heart Study. Neurobiol Aging 2014; 36:1602.e7-15. [PMID: 25523635 DOI: 10.1016/j.neurobiolaging.2014.11.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 11/15/2014] [Indexed: 12/24/2022]
Abstract
Patients with type 2 diabetes are at increased risk of age-related cognitive decline and dementia. Neuroimaging measures such as white matter lesion volume, brain volume, and fractional anisotropy may reflect the pathogenesis of these cognitive declines, and genetic factors may contribute to variability in these measures. This study examined multiple neuroimaging measures in 465 participants from 238 families with extensive genotype data in the type 2 diabetes enriched Diabetes Heart Study-Mind cohort. Heritability of these phenotypes and their association with candidate single-nucleotide polymorphisms (SNPs), and SNP data from genome- and exome-wide arrays were explored. All neuroimaging measures analyzed were significantly heritable (ĥ(2) = 0.55-0.99 in unadjusted models). Seventeen candidate SNPs (from 16 genes/regions) associated with neuroimaging phenotypes in prior studies showed no significant evidence of association. A missense variant (rs150706952, A432V) in PLEKHG4B from the exome-wide array was significantly associated with white matter mean diffusivity (p = 3.66 × 10(-7)) and gray matter mean diffusivity (p = 2.14 × 10(-7)). This analysis suggests genetic factors contribute to variation in neuroimaging measures in a population enriched for metabolic disease and other associated comorbidities.
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Affiliation(s)
- Laura M Raffield
- Molecular Genetics and Genomics Program, Wake Forest School of Medicine, Winston-Salem, NC, USA; Center for Genomics and Personalized Medicine Research, Wake Forest School of Medicine, Winston-Salem, NC, USA; Center for Diabetes Research, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Amanda J Cox
- Center for Genomics and Personalized Medicine Research, Wake Forest School of Medicine, Winston-Salem, NC, USA; Center for Diabetes Research, Wake Forest School of Medicine, Winston-Salem, NC, USA; Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Christina E Hugenschmidt
- Department of Gerontology and Geriatrics, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Barry I Freedman
- Department of Internal Medicine-Nephrology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Carl D Langefeld
- Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Jeff D Williamson
- Department of Gerontology and Geriatrics, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Fang-Chi Hsu
- Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Joseph A Maldjian
- Department of Radiology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Donald W Bowden
- Center for Genomics and Personalized Medicine Research, Wake Forest School of Medicine, Winston-Salem, NC, USA; Center for Diabetes Research, Wake Forest School of Medicine, Winston-Salem, NC, USA; Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC, USA.
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MR screening of candidates for thrombolysis: How to identify stroke mimics? J Neuroradiol 2014; 41:283-95. [PMID: 25451670 DOI: 10.1016/j.neurad.2014.05.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Revised: 05/24/2014] [Accepted: 05/26/2014] [Indexed: 11/21/2022]
Abstract
Stroke mimics account for up to a third of suspected strokes. The main causes are epileptic deficit, migraine aura, hypoglycemia, and functional disorders. Accurate recognition of stroke mimics is important for adequate identification of candidates for thrombolysis. This decreases the number of unnecessary treatments and invasive vascular investigations. Correctly identifying the cause of symptoms also avoids delaying proper care. Therefore, this pictorial review focuses on what the radiologist should know about the most common MRI patterns of stroke mimics in the first hours after onset of symptoms. The issues linked to the accurate diagnosis of stroke mimics in the management of candidates for thrombolysis will be discussed.
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Loehrer E, Vernooij MW, van der Lugt A, Hofman A, Ikram MA. Migraine and cerebral blood flow in the general population. Cephalalgia 2014; 35:190-8. [PMID: 25281221 DOI: 10.1177/0333102414552531] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Observations that migraine increases risk of cardiovascular disease and ischemic brain changes may suggest sustained vascular differences between migraineurs and controls. In a population-based setting, we compared cerebral blood flow between migraineurs in the attack-free period and controls. METHODS Between 2006 and 2008, 2642 participants, aged 45-65, from the Rotterdam Study completed a migraine questionnaire and had complete usable MRI data. Participants were classified into controls (N = 2033), probable migraine (N = 153), or migraine (N = 456). Using 2D phase contrast MRI, we performed a cross-sectional analysis of the effect of migraine on total cerebral blood flow (tCBF), parenchymal cerebral blood flow (pCBF), and blood flow in each intracranial arterial using linear regression. Additionally, we performed stratified analysis of subtypes of migraine. RESULTS Compared with controls, migraineurs had higher pCBF (1.07 ml/min/100 ml, 95% CI 0.08; 2.05). In particular, migraineurs had significantly higher blood flow in the basilar artery (4.70 ml/min, 95% CI 0.77; 8.62). DISCUSSION Migraineurs in the attack-free period have higher pCBF, particularly basilar artery flow, compared to controls, supporting the notion of sustained vascular differences between these groups outside of migraine attacks.
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Affiliation(s)
- Elizabeth Loehrer
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Meike W Vernooij
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, the Netherlands Department of Radiology, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Aad van der Lugt
- Department of Radiology, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Albert Hofman
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - M Arfan Ikram
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, the Netherlands Department of Radiology, Erasmus MC University Medical Center, Rotterdam, the Netherlands Department of Neurology, Erasmus MC University Medical Center, Rotterdam, the Netherlands
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Telischak NA, Detre JA, Zaharchuk G. Arterial spin labeling MRI: clinical applications in the brain. J Magn Reson Imaging 2014; 41:1165-80. [PMID: 25236477 DOI: 10.1002/jmri.24751] [Citation(s) in RCA: 136] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 08/05/2014] [Indexed: 11/05/2022] Open
Abstract
Visualization of cerebral blood flow (CBF) has become an important part of neuroimaging for a wide range of diseases. Arterial spin labeling (ASL) perfusion magnetic resonance imaging (MRI) sequences are increasingly being used to provide MR-based CBF quantification without the need for contrast administration, and can be obtained in conjunction with a structural MRI study. ASL MRI is useful for evaluating cerebrovascular disease including arterio-occlusive disease, vascular shunts, for assessing primary and secondary malignancy, and as a biomarker for neuronal metabolism in other disorders such as seizures and neurodegeneration. In this review we briefly outline the various ASL techniques including advantages and disadvantages of each, methodology for clinical interpretation, and clinical applications with specific examples.
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Affiliation(s)
- Nicholas A Telischak
- Department of Radiology, Stanford University Medical Center, Stanford, California, USA
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Watts JM, Whitlow CT, Maldjian JA. Clinical applications of arterial spin labeling. NMR IN BIOMEDICINE 2013; 26:892-900. [PMID: 23378178 DOI: 10.1002/nbm.2904] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Revised: 10/23/2012] [Accepted: 11/12/2012] [Indexed: 06/01/2023]
Abstract
MR arterial spin labeling is primarily applied as a neuroimaging method to measure cerebral blood flow. As this technique becomes more widely available, a basic understanding of the clinical applications is necessary for optimal utilization in the setting of patient care. This review focuses on the use of arterial spin labeling imaging for the evaluation of cerebrovascular disease, brain tumors and neuropsychiatric illness.
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Affiliation(s)
- Jonathan M Watts
- Wake Forest School of Medicine, Department of Radiology, Winston Salem, NC, USA
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Charles A. The evolution of a migraine attack - a review of recent evidence. Headache 2012; 53:413-9. [PMID: 23278169 DOI: 10.1111/head.12026] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/12/2012] [Indexed: 01/07/2023]
Abstract
A migraine attack is an extraordinarily complex brain event that takes place over hours to days. This review focuses on recent human studies that shed light on the evolution of a migraine attack. It begins with a constellation of premonitory symptoms that are associated with activation of the hypothalamus and may involve the neurotransmitter dopamine. Even in the premonitory phase, patients experience sensitivity to sensory stimuli, indicating that central sensitization is a primary phenomenon. The migraine attack progresses to a phase that in some patients includes aura, which involves changes in cortical function, blood flow, and neurovascular coupling. The aura phase overlaps with the headache phase, which is associated with further changes in blood flow and function of the brainstem, thalamus, hypothalamus, and cortex. Serotonin receptors, nitric oxide, calcitonin gene-related peptide, pituitary adenylate cyclase-activating polypeptide, and prostanoids are demonstrated specific chemical mediators of migraine based on therapeutic and triggered migraine studies. A number of migraine symptoms persist beyond resolution of headache into a postdromal phase, accompanied by persistent blood flow changes in several brain regions. Although these phases of migraine have substantial temporal, neurochemical, and anatomical overlap, each represents an important window onto the pathophysiology of migraine as well as a target for therapeutic intervention. A comprehensive approach to migraine requires an understanding of the entire range of mechanisms and resultant symptoms that occur throughout the evolution of an attack.
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Affiliation(s)
- Andrew Charles
- Headache Research and Treatment Program, Department of Neurology, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, CA 90095, USA
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McGehee BE, Pollock JM, Maldjian JA. Brain perfusion imaging: How does it work and what should I use? J Magn Reson Imaging 2012; 36:1257-72. [DOI: 10.1002/jmri.23645] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Accepted: 02/17/2012] [Indexed: 11/09/2022] Open
Affiliation(s)
- Blake E. McGehee
- Department of Radiology, Wake Forest University School of Medicine, Winston‐Salem, North Carolina, USA
| | - Jeffrey M. Pollock
- Department of Radiology, Oregon Health and Science University, Portland, Oregon, USA
| | - Joseph A. Maldjian
- Department of Radiology, Wake Forest University School of Medicine, Winston‐Salem, North Carolina, USA
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Floery D, Vosko MR, Fellner FA, Fellner C, Ginthoer C, Gruber F, Ransmayr G, Doerfler A, Uder M, Bradley WG. Acute-onset migrainous aura mimicking acute stroke: MR perfusion imaging features. AJNR Am J Neuroradiol 2012; 33:1546-52. [PMID: 22517281 DOI: 10.3174/ajnr.a3020] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE In a very limited number of cases, acute migrainous aura may mimic acute brain infarction. The aim of this study was to recognize patterns of MR perfusion abnormalities in this presentation. MATERIALS AND METHODS One thousand eight hundred fifty MR imaging studies performed for the suspicion of acute brain infarction were analyzed retrospectively to detect patients with acute migrainous aura not from stroke. All patients were examined clinically by 2 neurologists and underwent a standard stroke MR imaging protocol, including PWI. Two radiologists reviewed the perfusion maps visually and quantitatively for the presence, distribution, and grade of perfusion abnormalities. RESULTS Among 1850 MR imaging studies, 20 (1.08%) patients were found to have acute migrainous aura. Hypoperfusion was found in 14/20 patients (70%) with delayed rMTT and TTP, decreased rCBF, and minimal decrease in rCBV. In contrast to the typical pattern in stroke, perfusion abnormalities were not limited to a single vascular territory but extended to >1. Bilateral hypoperfusion was seen in 3/14 cases. In 11/14 cases, hypoperfusion with a posterior predominance was found. TTP and rMTT were the best maps to depict perfusion changes at visual assessment, but also rCBF maps demonstrated significant hypoperfusion in quantitative analysis. In all patients, clinical and imaging follow-up findings were negative for stroke. CONCLUSIONS Acute migrainous aura is rare but important in the differential diagnosis among patients with the suspicion of acute brain infarction. Atypical stroke perfusion abnormalities can be seen in these patients.
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Affiliation(s)
- D Floery
- Institute of Radiology, AKH Linz, Linz, Austria
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