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Ebaid NY, Mouffokes A, Yasen NS, Elrosasy AM, Philip KG, Assy MM, Alsowey AM. Diagnostic accuracy of dual-energy computed tomography in the diagnosis of neurological complications after endovascular treatment of acute ischaemic stroke: a systematic review and meta-analysis. Br J Radiol 2024; 97:73-92. [PMID: 38263833 PMCID: PMC11027317 DOI: 10.1093/bjr/tqad007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 09/28/2023] [Accepted: 10/22/2023] [Indexed: 01/25/2024] Open
Abstract
OBJECTIVES To investigate dual-energy computed tomography's (DECT) diagnostic performance in detecting neurological complications following endovascular therapy (EVT) of acute ischaemic stroke (AIS). METHODS We performed the literature search using Web of Science, Scopus, PubMed, EBSCO, and Science Direct databases for published related studies. The selected studies estimated the validity of DECT in the detection of neurological complications after EVT for AIS. Study quality assessment was performed utilizing the Quality of Diagnostic Accuracy Studies-2 Tool. Our meta-analysis calculated the pooled sensitivity, negative likelihood ratio, specificity, and positive likelihood ratio for each detected complication. The summary receiver operating characteristics (sROC) curve was utilized to estimate the area under the curve (AUC). RESULTS Of 22 studies, 21 were included in the quantitative synthesis. In the detection of intracerebral haemorrhage (ICH), DECT pooled overall sensitivity and specificity were 69.9% (95% CI, 44.5%-86.8%) and 100% (95% CI, 92.1%-100%); whereas, in the detection of ischaemia, they were 85.9% (95% CI, 80.4%-90%) and 90.7% (95% CI, 87%-93.5%), respectively. On the sROC curve, AUC values of 0.954 and 0.952 were recorded for the detection of ICH and ischaemia, respectively. CONCLUSIONS DECT demonstrated high accuracy and specificity in the detection of neurological complications post-endovascular treatment of AIS. However, further prospective studies with a standardized reference test and a larger sample size are recommended to support these findings. ADVANCES IN KNOWLEDGE DECT is a rapid and valid imaging tool for the prediction of ICH and cerebral ischaemia after the EVT of AIS.
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Affiliation(s)
- Noha Yahia Ebaid
- Radiodiagnosis Department, Faculty of Medicine, Zagazig University, Zagazig 40511, Egypt
- Medical Research Group of Egypt, Cairo 11511, Egypt
| | - Adel Mouffokes
- Medical Research Group of Egypt, Cairo 11511, Egypt
- Faculty of Medicine, University of Oran 1 Ahmed Ben Bella, Oran 31020, Algeria
| | - Noha S Yasen
- Medical Research Group of Egypt, Cairo 11511, Egypt
- Faculty of Applied Medical Sciences, Misr University for Science and Technology, Cairo 11511, Egypt
| | - Amr M Elrosasy
- Medical Research Group of Egypt, Cairo 11511, Egypt
- Faculty of Medicine, Cairo University, Cairo 11511, Egypt
| | - Kerollos George Philip
- Medical Research Group of Egypt, Cairo 11511, Egypt
- Faculty of Medicine, Sohag University, Sohag 82511, Egypt
| | - Mostafa Mohamad Assy
- Radiodiagnosis Department, Faculty of Medicine, Zagazig University, Zagazig 40511, Egypt
| | - Ahmed Mohamed Alsowey
- Radiodiagnosis Department, Faculty of Medicine, Zagazig University, Zagazig 40511, Egypt
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2
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Pham J, Gan C, Dabboucy J, Stella DL, Dowling R, Yan B, Bush S, Williams C, Mitchell PJ, Desmond P, Thijs V, Asadi H, Brooks M, Maingard J, Jhamb A, Pavlin-Premrl D, Campbell BC, Ng FC. Occult contrast retention post-thrombectomy on 24-h follow-up dual-energy CT: Associations and impact on imaging analysis. Int J Stroke 2023; 18:1228-1237. [PMID: 37260232 DOI: 10.1177/17474930231182018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Following reperfusion treatment in ischemic stroke, computed tomography (CT) imaging at 24 h is widely used to assess radiological outcomes. Even without visible hyperattenuation, occult angiographic contrast may persist in the brain and confound Hounsfield unit-based imaging metrics, such as net water uptake (NWU). AIMS We aimed to assess the presence and factors associated with retained contrast post-thrombectomy on 24-h imaging using dual-energy CT (DECT), and its impact on the accuracy of NWU as a measure of cerebral edema. METHODS Consecutive patients with anterior circulation large vessel occlusion who had post-thrombectomy DECT performed 24-h post-treatment from two thrombectomy stroke centers were retrospectively studied. NWU was calculated by interside comparison of HUs of the infarct lesion and its mirror homolog. Retained contrast was quantified by the difference in NWU values with and without adjustment for iodine. Patients with visible hyperdensities from hemorrhagic transformation or visible contrast retention and bilateral infarcts were excluded. Cerebral edema was measured by relative hemispheric volume (rHV) and midline shift (MLS). RESULTS Of 125 patients analyzed (median age 71 (IQR = 61-80), baseline National Institutes of Health Stroke Scale (NIHSS) 16 (IQR = 9.75-21)), reperfusion (defined as extended-Thrombolysis-In-Cerebral-Infarction 2b-3) was achieved in 113 patients (90.4%). Iodine-subtracted NWU was significantly higher than unadjusted NWU (17.1% vs 10.8%, p < 0.001). In multivariable median regression analysis, increased age (p = 0.024), number of passes (p = 0.006), final infarct volume (p = 0.023), and study site (p = 0.021) were independently associated with amount of retained contrast. Iodine-subtracted NWU correlated with rHV (rho = 0.154, p = 0.043) and MLS (rho = 0.165, p = 0.033) but unadjusted NWU did not (rHV rho = -0.035, p = 0.35; MLS rho = 0.035, p = 0.347). CONCLUSIONS Angiographic iodine contrast is retained in brain parenchyma 24-h post-thrombectomy, even without visually obvious hyperdensities on CT, and significantly affects NWU measurements. Adjustment for retained iodine using DECT is required for accurate NWU measurements post-thrombectomy. Future quantitative studies analyzing CT after thrombectomy should consider occult contrast retention.
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Affiliation(s)
- Jenny Pham
- Department of Neurology, The Royal Melbourne Hospital, Parkville, VIC, Australia
| | - Calvin Gan
- Department of Radiology, The Royal Melbourne Hospital, Parkville, VIC, Australia
| | - Jasmin Dabboucy
- Department of Neurology, Austin Health, Heidelberg, VIC, Australia
| | - Damien L Stella
- Department of Radiology, The Royal Melbourne Hospital, Parkville, VIC, Australia
| | - Richard Dowling
- Department of Radiology, The Royal Melbourne Hospital, Parkville, VIC, Australia
| | - Bernard Yan
- Department of Radiology, The Royal Melbourne Hospital, Parkville, VIC, Australia
- Department of Radiology, Austin Health, Heidelberg, VIC, Australia
| | - Steven Bush
- Department of Radiology, The Royal Melbourne Hospital, Parkville, VIC, Australia
| | - Cameron Williams
- Department of Radiology, The Royal Melbourne Hospital, Parkville, VIC, Australia
| | - Peter J Mitchell
- Department of Radiology, The Royal Melbourne Hospital, Parkville, VIC, Australia
| | - Patricia Desmond
- Department of Radiology, The Royal Melbourne Hospital, Parkville, VIC, Australia
- The University of Melbourne, Parkville, VIC, Australia
| | - Vincent Thijs
- Department of Neurology, Austin Health, Heidelberg, VIC, Australia
- Division of Stroke, Florey Institute of Neuroscience and Mental Health, Heidelberg, VIC, Australia
| | - Hamed Asadi
- Department of Radiology, Austin Health, Heidelberg, VIC, Australia
| | - Mark Brooks
- Department of Radiology, Austin Health, Heidelberg, VIC, Australia
| | - Julian Maingard
- Department of Radiology, Austin Health, Heidelberg, VIC, Australia
| | - Ash Jhamb
- Department of Radiology, Austin Health, Heidelberg, VIC, Australia
| | - Davor Pavlin-Premrl
- Department of Radiology, Austin Health, Heidelberg, VIC, Australia
- Melbourne Brain Centre, Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC, Australia
| | - Bruce Cv Campbell
- Department of Neurology, The Royal Melbourne Hospital, Parkville, VIC, Australia
- Melbourne Brain Centre, Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC, Australia
| | - Felix C Ng
- Department of Neurology, The Royal Melbourne Hospital, Parkville, VIC, Australia
- Department of Neurology, Austin Health, Heidelberg, VIC, Australia
- Melbourne Brain Centre, Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC, Australia
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van der Steen W, van der Ende NAM, Luijten SPR, Rinkel LA, van Kranendonk KR, van Voorst H, Roosendaal SD, Beenen LFM, Coutinho JM, Emmer BJ, van Oostenbrugge RJ, Majoie CBLM, Lingsma HF, van der Lugt A, Dippel DWJ, Roozenbeek B. Type of intracranial hemorrhage after endovascular stroke treatment: association with functional outcome. J Neurointerv Surg 2023; 15:971-976. [PMID: 36261280 PMCID: PMC10511981 DOI: 10.1136/jnis-2022-019474] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 10/03/2022] [Indexed: 11/04/2022]
Abstract
BACKGROUND Intracranial hemorrhage (ICH) is a frequent complication after endovascular stroke treatment. OBJECTIVE To assess the association of the occurrence and type of ICH after endovascular treatment (EVT) with functional outcome. METHODS We analyzed data from the MR CLEAN-NO IV and MR CLEAN-MED trials. Both trials included adult patients with ischemic stroke with a large vessel occlusion in the anterior circulation, who were eligible for EVT. ICH was classified (1) as asymptomatic or symptomatic (concomitant neurological deterioration of ≥4 points on the NIHSS, or ≥2 points on 1 NIHSS item), and (2) according to the Heidelberg Bleeding Classification. We used multivariable ordinal logistic regression analyses to assess the association of the occurrence and type of ICH with the modified Rankin Scale score at 90 days. RESULTS Of 1017 included patients, 331 (33%) had an asymptomatic ICH, and 90 (9%) had a symptomatic ICH. Compared with no ICH, both asymptomatic (adjusted common OR (acOR)=0.76; 95% CI 0.58 to 0.98) and symptomatic (acOR=0.07; 95% CI 0.04 to 0.14) ICH were associated with worse functional outcome. In particular, isolated parenchymal hematoma type 2 (acOR=0.37; 95% CI 0.14 to 0.95), combined parenchymal hematoma with hemorrhage outside infarcted brain tissue (acOR=0.17; 95% CI 0.10 to 0.30), and combined hemorrhages outside infarcted brain tissue (acOR=0.14; 95% CI 0.03 to 0.74) were associated with worse functional outcome than no ICH.Strength of the association of ICH with functional outcome depends on the type of ICH. Although the association is stronger for symptomatic ICH, asymptomatic ICH after EVT is also associated with worse functional outcome.
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Affiliation(s)
- Wouter van der Steen
- Department of Neurology, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Radiology and Nuclear Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Nadinda A M van der Ende
- Department of Neurology, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Radiology and Nuclear Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Sven P R Luijten
- Department of Radiology and Nuclear Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Leon A Rinkel
- Department of Neurology, Amsterdam UMC Locatie AMC, Amsterdam, The Netherlands
| | - Katinka R van Kranendonk
- Department of Radiology and Nuclear Medicine, Amsterdam UMC Locatie AMC, Amsterdam, The Netherlands
| | - Henk van Voorst
- Department of Radiology and Nuclear Medicine, Amsterdam UMC Locatie AMC, Amsterdam, The Netherlands
- Department of Biomedical Engineering and Physics, Amsterdam UMC Locatie AMC, Amsterdam, The Netherlands
| | - Stefan D Roosendaal
- Department of Radiology and Nuclear Medicine, Amsterdam UMC Locatie AMC, Amsterdam, The Netherlands
| | - Ludo F M Beenen
- Department of Radiology and Nuclear Medicine, Amsterdam UMC Locatie AMC, Amsterdam, The Netherlands
| | - Jonathan M Coutinho
- Department of Neurology, Amsterdam UMC Locatie AMC, Amsterdam, The Netherlands
| | - Bart J Emmer
- Department of Radiology and Nuclear Medicine, Amsterdam UMC Locatie AMC, Amsterdam, The Netherlands
| | | | - Charles B L M Majoie
- Department of Radiology and Nuclear Medicine, Amsterdam UMC Locatie AMC, Amsterdam, The Netherlands
| | - Hester F Lingsma
- Department of Public Health, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Aad van der Lugt
- Department of Radiology and Nuclear Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | | | - Bob Roozenbeek
- Department of Neurology, Erasmus Medical Center, Rotterdam, The Netherlands
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Tabaac B, Dickstein L, Gurnea K, Hillis AE. Follow-up Imaging After Thrombolysis: FIAT, A Randomized Trial. J Stroke Cerebrovasc Dis 2023; 32:107092. [PMID: 37068325 DOI: 10.1016/j.jstrokecerebrovasdis.2023.107092] [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: 12/07/2022] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 04/19/2023] Open
Abstract
TRIAL DESIGN Current protocols for treatment of acute ischemic stroke with intravenous thrombolytics, such as alteplase (tPA) and tenecteplase (tNK), recommend the completion of a routine non-contrast head CT at 24 hours post treatment to evaluate for hemorrhage prior to the initiation of antiplatelet therapy for secondary stroke prevention. This guideline was instituted because it had been part of the protocol in the NINDS multicenter randomized placebo-controlled trial that showed the benefit of IV thrombolytics within 3 hours of stroke onset. Recent observational studies indicate that the repeat (stability) head CT rarely alters clinical management, in the absence of neurological worsening or evidence of clinical signs of hemorrhagic conversion, such as seizures, severe headache, or novel acute deficits. A solitary CT carries with it a non-negligible dose of radiation with additive cost to the medical system at large. METHODS We aimed to identify, with a randomized, blinded outcome assessment trial, if a routine head CT at 24 hours, in the absence of clinical indication, negatively influences clinical outcomes. We enrolled 58 patients, and evaluated differences between groups with t-tests. We also evaluated differences between outcomes (90 day modified Rankin Scale, mRS and change in National Institutes of Health Stroke Scale, NIHSS) from pretreatment to discharge using multivariable logistic regression, including age, baseline NIHSS, and group as independent variables. RESULTS We found no added benefit of routine CT on either outcome measure. CONCLUSION It is likely safe to forgo follow up imaging after thrombolysis in the absence of clinical decompensation.
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Affiliation(s)
- Burton Tabaac
- University of Nevada, Reno School of Medicine, Reno, NV, USA; Carson Tahoe Health, Carson City, NV, USA.
| | - Leah Dickstein
- NYU Langone Health, Department of Neurocritical Care, New York, NY, USA.
| | - Kristen Gurnea
- Clinical Trials Administration, Renown Health, Reno, NV, USA.
| | - Argye E Hillis
- Department of Neurology, Cerebrovascular Division, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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DiNitto J, Feldman M, Grimaudo H, Mummareddy N, Ahn S, Bhamidipati A, Anderson D, Ramirez-Giraldo JC, Fusco M, Chitale R, Froehler MT. Flat-panel dual-energy head computed tomography in the angiography suite after thrombectomy for acute stroke: A clinical feasibility study. Interv Neuroradiol 2023:15910199231157462. [PMID: 36788203 DOI: 10.1177/15910199231157462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
Abstract
BACKGROUND Management of large vessel occlusion (LVO) patients after thrombectomy is affected by the presence of intracranial hemorrhage (ICH) on post-procedure imaging. Differentiating contrast staining from hemorrhage on post-procedural imaging has been facilitated by dual-energy computed tomography (DECT), traditionally performed in dedicated computed tomography (CT) scanners with subsequent delays in treatment. We employed a novel method of DECT using the Siemens cone beam CT (DE-CBCT) in the angiography suite to evaluate for post-procedure ICH and contrast extravasation. METHODS After endovascular treatment for LVO was performed and before the patient was removed from the operating table, DE-CBCT was performed using the Siemens Q-biplane system, with two separate 20-second CBCT scans at two energy levels: 70 keV (standard) and 125 keV with tin filtration (nonstandard). Post-procedurally, patients also underwent a standard DECT using Siemens SOMATOM Force CT scanner. Two independent reviewers blindly evaluated the DE-CBCT and DECT for hemorrhage and contrast extravasation. RESULTS We successfully performed intra-procedural DE-CBCT in 10 subjects with no technical failure. The images were high-quality and subjectively useful to differentiate contrast from hemorrhage. The one hemorrhage seen on standard DECT was very small and clinically silent. The interrater reliability was 100% for both contrast and hemorrhage detection. CONCLUSION We demonstrate that intra-procedural DE-CBCT after thrombectomy is feasible and provides clinically meaningful images. There was close agreement between findings on DE-CBCT and standard DECT. Our findings suggest that DE-CBCT could be used in the future to improve stroke thrombectomy patient workflow and to more efficiently guide the postoperative management of these patients.
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Affiliation(s)
- Julie DiNitto
- 33573Siemens Medical Solutions, Malvern, PA, USA
- Department of Neurosurgery, 12326University of Tennessee Health and Science Center, Memphis, TN, USA
| | - Michael Feldman
- Department of Neurological Surgery, 12328Vanderbilt University Medical Center, Nashville, TN, USA
| | - Heather Grimaudo
- Department of Neurological Surgery, 12328Vanderbilt University Medical Center, Nashville, TN, USA
| | - Nishit Mummareddy
- Department of Neurological Surgery, 12328Vanderbilt University Medical Center, Nashville, TN, USA
| | - Seoiyoung Ahn
- 12327Vanderbilt University School of Medicine, Nashville, TN, USA
| | | | - Drew Anderson
- Cerebrovascular Program, 12328Vanderbilt University Medical Center, Nashville, TN, USA
| | | | - Matthew Fusco
- Department of Neurological Surgery, 12328Vanderbilt University Medical Center, Nashville, TN, USA
- Cerebrovascular Program, 12328Vanderbilt University Medical Center, Nashville, TN, USA
| | - Rohan Chitale
- Department of Neurological Surgery, 12328Vanderbilt University Medical Center, Nashville, TN, USA
- Cerebrovascular Program, 12328Vanderbilt University Medical Center, Nashville, TN, USA
| | - Michael T Froehler
- Department of Neurological Surgery, 12328Vanderbilt University Medical Center, Nashville, TN, USA
- Cerebrovascular Program, 12328Vanderbilt University Medical Center, Nashville, TN, USA
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Nayab A, Wijdicks EF, Luetmer PH, Lehman VT. Value of dual energy CT in post resuscitation coma. Differentiating contrast retention and ischemic brain parenchyma. Radiol Case Rep 2022; 17:3722-3726. [PMID: 35965920 PMCID: PMC9363949 DOI: 10.1016/j.radcr.2022.07.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/05/2022] [Accepted: 07/08/2022] [Indexed: 11/18/2022] Open
Affiliation(s)
- Asra Nayab
- Division of Neuroradiology Department of Radiology, Mayo Clinic Rochester, MN, USA
- Radiology Education Office MA 2-00C Mayo Clinic 200 First Street SW Rochester, MN 55905, USA
- Corresponding author.
| | - Eelco F. Wijdicks
- Department of Neurology and Neurocritical Care, Mayo Clinic Rochester, MN, USA
- Division of Neurology and Neurocritical Care Mayo Clinic Rochester, MN, USA
| | - Patrick H. Luetmer
- Division of Neuroradiology Department of Radiology, Mayo Clinic Rochester, MN, USA
- Radiology Education Office MA 2-00C Mayo Clinic 200 First Street SW Rochester, MN 55905, USA
| | - Vance T. Lehman
- Division of Neuroradiology Department of Radiology, Mayo Clinic Rochester, MN, USA
- Radiology Education Office MA 2-00C Mayo Clinic 200 First Street SW Rochester, MN 55905, USA
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Charbonnier G, Bonnet L, Biondi A, Moulin T. Intracranial Bleeding After Reperfusion Therapy in Acute Ischemic Stroke. Front Neurol 2021; 11:629920. [PMID: 33633661 PMCID: PMC7900408 DOI: 10.3389/fneur.2020.629920] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 12/29/2020] [Indexed: 12/16/2022] Open
Abstract
Intracranial hemorrhage is one of the most feared complications following brain infarct. Ischemic tissues have a natural tendency to bleed. Moreover, the first recanalization trials using intravenous thrombolysis have shown an increase in mild to severe intracranial hemorrhage. Symptomatic intracerebral hemorrhage is strongly associated with poor outcomes and is an important factor in recanalization decisions. Stroke physicians have to weigh the potential benefit of recanalization therapies, first, with different risks of intracranial hemorrhage described in randomized controlled trials, and second with numerous risk markers that have been found to be associated with intracranial hemorrhage in retrospective series. These decisions have become quite complex with different intravenous thrombolytics and mechanical thrombectomy. This review aims to outline some elements of the pathophysiological mechanisms and classifications, describe most of the risk factors identified for each reperfusion therapy, and finally suggest future research directions that could help physicians dealing with these complications.
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Affiliation(s)
- Guillaume Charbonnier
- Neurology Department, Besançon University Hospital, Besançon, France.,Interventional Neuroradiology Department, Besançon University Hospital, Besançon, France.,EA 481 Neurosciences laboratory, Franche-Comté University, Besançon, France
| | - Louise Bonnet
- Neurology Department, Besançon University Hospital, Besançon, France
| | - Alessandra Biondi
- Interventional Neuroradiology Department, Besançon University Hospital, Besançon, France.,CIC-1431 Inserm, Besançon, France
| | - Thierry Moulin
- Neurology Department, Besançon University Hospital, Besançon, France.,EA 481 Neurosciences laboratory, Franche-Comté University, Besançon, France.,CIC-1431 Inserm, Besançon, France
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