1
|
Dagher R, Ozkara BB, Karabacak M, Dagher SA, Rumbaut EI, Luna LP, Yedavalli VS, Wintermark M. Artificial intelligence/machine learning for neuroimaging to predict hemorrhagic transformation: Systematic review/meta-analysis. J Neuroimaging 2024. [PMID: 39034604 DOI: 10.1111/jon.13223] [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: 04/14/2024] [Revised: 06/04/2024] [Accepted: 07/07/2024] [Indexed: 07/23/2024] Open
Abstract
BACKGROUND AND PURPOSE Early and reliable prediction of hemorrhagic transformation (HT) in patients with acute ischemic stroke (AIS) is crucial for treatment decisions and early intervention. The purpose of this study was to conduct a systematic review and meta-analysis on the performance of artificial intelligence (AI) and machine learning (ML) models that utilize neuroimaging to predict HT. METHODS A systematic search of PubMed, EMBASE, and Web of Science was conducted until February 19, 2024. Inclusion criteria were as follows: patients with AIS who received reperfusion therapy; AI/ML algorithm using imaging to predict HT; or presence of sufficient data on the predictive performance. Exclusion criteria were as follows: articles with less than 20 patients; articles lacking algorithms that operate solely on images; or articles not detailing the algorithm used. The quality of eligible studies was assessed using the Quality Assessment of Diagnostic Accuracy Studies-2 and Checklist for Artificial Intelligence in Medical Imaging. Pooled sensitivity, specificity, and diagnostic odds ratio (DOR) were calculated using a random-effects model, and a summary receiver operating characteristic curve was constructed using the Reitsma method. RESULTS We identified six eligible studies, which included 1640 patients. Aside from an unclear risk of bias regarding flow and timing identified in two of the studies, all studies showed low risk of bias and applicability concerns in all categories. Pooled sensitivity, specificity, and DOR were .849, .878, and 45.598, respectively. CONCLUSION AI/ML models can reliably predict the occurrence of HT in AIS patients. More prospective studies are needed for subgroup analyses and higher clinical certainty and usefulness.
Collapse
Affiliation(s)
- Richard Dagher
- Department of Neuroradiology, MD Anderson Cancer Center, Houston, Texas, USA
| | - Burak Berksu Ozkara
- Department of Neuroradiology, MD Anderson Cancer Center, Houston, Texas, USA
| | - Mert Karabacak
- Department of Neurosurgery, Mount Sinai Health System, New York, New York, USA
| | - Samir A Dagher
- Department of Neuroradiology, MD Anderson Cancer Center, Houston, Texas, USA
| | | | - Licia P Luna
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Vivek S Yedavalli
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Max Wintermark
- Department of Neuroradiology, MD Anderson Cancer Center, Houston, Texas, USA
| |
Collapse
|
2
|
Ryu JC, Kwon B, Song Y, Lee DH, Chang JY, Kang DW, Kwon SU, Kim JS, Kim BJ. Effect of Intravenous Thrombolysis Prior to Mechanical Thrombectomy According to the Location of M1 Occlusion. J Stroke 2024; 26:75-86. [PMID: 38186184 PMCID: PMC10850451 DOI: 10.5853/jos.2023.01529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 09/06/2023] [Accepted: 09/26/2023] [Indexed: 01/09/2024] Open
Abstract
BACKGROUND AND PURPOSE The additive effects of intravenous thrombolysis (IVT) before mechanical thrombectomy (MT) remain unclear. We aimed to investigate the efficacy and safety of IVT prior to MT depending on the location of M1 occlusion. METHODS We reviewed the cases of patients who underwent MT for emergent large-vessel occlusion of the M1 segment. Baseline characteristics as well as clinical and periprocedural variables were compared according to the location of M1 occlusion (i.e., proximal and distal M1 occlusion). The main outcome was the achievement of functional independence (modified Rankin Scale score, 0-2) at 3 months after stroke. The main outcomes were compared between the proximal and distal groups based on the use of IVT before MT. RESULTS Among 271 patients (proximal occlusion, 44.6%; distal occlusion, 55.4%), 33.9% (41/121) with proximal occlusion and 24.7% (37/150) with distal occlusion underwent IVT prior to MT. Largeartery atherosclerosis was more common in patients with proximal M1 occlusion; cardioembolism was more common in those with distal M1 occlusion. In patients with proximal M1 occlusion, there was no association between IVT before MT and functional independence. In contrast, there was a significant association between the use of IVT prior to MT (odds ratio=5.30, 95% confidence interval=1.56-18.05, P=0.007) and functional independence in patients with distal M1 occlusion. CONCLUSION IVT before MT was associated with improved functional outcomes in patients with M1 occlusion, especially in those with distal M1 occlusion but not in those with proximal M1 occlusion.
Collapse
Affiliation(s)
- Jae-Chan Ryu
- Department of Neurology, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
| | - Boseong Kwon
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Yunsun Song
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Deok Hee Lee
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jun Young Chang
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Dong-Wha Kang
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sun U. Kwon
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jong S. Kim
- Department of Neurology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Bum Joon Kim
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| |
Collapse
|
3
|
Koch PJ, Rudolf LF, Schramm P, Frontzkowski L, Marburg M, Matthis C, Schacht H, Fiehler J, Thomalla G, Hummel FC, Neumann A, Münte TF, Royl G, Machner B, Schulz R. Preserved Corticospinal Tract Revealed by Acute Perfusion Imaging Relates to Better Outcome After Thrombectomy in Stroke. Stroke 2023; 54:3081-3089. [PMID: 38011237 DOI: 10.1161/strokeaha.123.044221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 10/04/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND The indication for mechanical thrombectomy (MT) in stroke patients with large vessel occlusion has been constantly expanded over the past years. Despite remarkable treatment effects at the group level in clinical trials, many patients remain severely disabled even after successful recanalization. A better understanding of this outcome variability will help to improve clinical decision-making on MT in the acute stage. Here, we test whether current outcome models can be refined by integrating information on the preservation of the corticospinal tract as a functionally crucial white matter tract derived from acute perfusion imaging. METHODS We retrospectively analyzed 162 patients with stroke and large vessel occlusion of the anterior circulation who were admitted to the University Medical Center Lübeck between 2014 and 2020 and underwent MT. The ischemic core was defined as fully automatized based on the acute computed tomography perfusion with cerebral blood volume data using outlier detection and clustering algorithms. Normative whole-brain structural connectivity data were used to infer whether the corticospinal tract was affected by the ischemic core or preserved. Ordinal logistic regression models were used to correlate this information with the modified Rankin Scale after 90 days. RESULTS The preservation of the corticospinal tract was associated with a reduced risk of a worse functional outcome in large vessel occlusion-stroke patients undergoing MT, with an odds ratio of 0.28 (95% CI, 0.15-0.53). This association was still significant after adjusting for multiple confounding covariables, such as age, lesion load, initial symptom severity, sex, stroke side, and recanalization status. CONCLUSIONS A preinterventional computed tomography perfusion-based surrogate of corticospinal tract preservation or disconnectivity is strongly associated with functional outcomes after MT. If validated in independent samples this concept could serve as a novel tool to improve current outcome models to better understand intersubject variability after MT in large vessel occlusion stroke.
Collapse
Affiliation(s)
- Philipp J Koch
- Department of Neurology (P.J.K., M.M., G.R., B.M.), University Hospital Schleswig-Holstein, Campus Lübeck, Germany
- Center of Brain, Behavior and Metabolism (CBBM), University of Lübeck, Germany (P.J.K., T.F.M., G.R., B.M.)
| | - Linda F Rudolf
- Department of Neuroradiology (L.F.R., P.S., H.S., A.N.), University Hospital Schleswig-Holstein, Campus Lübeck, Germany
| | - Peter Schramm
- Department of Neuroradiology (L.F.R., P.S., H.S., A.N.), University Hospital Schleswig-Holstein, Campus Lübeck, Germany
| | - Lukas Frontzkowski
- Department of Neurology (L.F., G.T., R.S.) University Medical Center Hamburg Eppendorf, Germany
| | - Maria Marburg
- Department of Neurology (P.J.K., M.M., G.R., B.M.), University Hospital Schleswig-Holstein, Campus Lübeck, Germany
| | - Christine Matthis
- Department of Social Medicine and Epidemiology (C.M.), University Hospital Schleswig-Holstein, Campus Lübeck, Germany
| | - Hannes Schacht
- Department of Neuroradiology (L.F.R., P.S., H.S., A.N.), University Hospital Schleswig-Holstein, Campus Lübeck, Germany
| | - Jens Fiehler
- Department of Neuroradiology (J.F.) University Medical Center Hamburg Eppendorf, Germany
| | - Götz Thomalla
- Department of Neurology (L.F., G.T., R.S.) University Medical Center Hamburg Eppendorf, Germany
| | - Friedhelm C Hummel
- Neuro-X Institute and Brain Mind Institute, Swiss Federal Institute of Technology, Geneva, Switzerland (F.C.H.)
- Neuro-X Institute and Brain Mind Institute, Swiss Federal Institute of Technology (EPFL Valais), Clinique Romande de Réadaptation, Sion, Switzerland (F.C.H.)
- Clinical Neuroscience, University of Geneva Medical School, Switzerland (F.C.H.)
| | - Alexander Neumann
- Department of Neuroradiology (L.F.R., P.S., H.S., A.N.), University Hospital Schleswig-Holstein, Campus Lübeck, Germany
| | - Thomas F Münte
- Center of Brain, Behavior and Metabolism (CBBM), University of Lübeck, Germany (P.J.K., T.F.M., G.R., B.M.)
| | - Georg Royl
- Department of Neurology (P.J.K., M.M., G.R., B.M.), University Hospital Schleswig-Holstein, Campus Lübeck, Germany
- Center of Brain, Behavior and Metabolism (CBBM), University of Lübeck, Germany (P.J.K., T.F.M., G.R., B.M.)
| | - Björn Machner
- Department of Neurology (P.J.K., M.M., G.R., B.M.), University Hospital Schleswig-Holstein, Campus Lübeck, Germany
- Center of Brain, Behavior and Metabolism (CBBM), University of Lübeck, Germany (P.J.K., T.F.M., G.R., B.M.)
- Department of Neurology, Schoen Clinic Neustadt, Holstein, Germany (B.M.)
| | - Robert Schulz
- Department of Neurology (L.F., G.T., R.S.) University Medical Center Hamburg Eppendorf, Germany
| |
Collapse
|
4
|
Ni H, Hang Y, Wang CD, Jia ZY, Shi HB, Liu S, Zhao LB. Subcortical infarcts on admission CTP predict poor outcome despite excellent reperfusion in delayed time windows. Neuroradiology 2023:10.1007/s00234-023-03172-3. [PMID: 37237038 DOI: 10.1007/s00234-023-03172-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 05/21/2023] [Indexed: 05/28/2023]
Abstract
PURPOSE The effect of pretreatment infarct location on clinical outcome after successful mechanical thrombectomy is not understood. Our aim was to evaluate the association between computed tomography perfusion (CTP)-based ischemic core location and clinical outcome following excellent reperfusion in late time windows. METHODS We retrospectively reviewed patients who underwent thrombectomy for acute anterior circulation large vessel occlusion in late time windows from October 2019 to June 2021 and enrolled 65 patients with visible ischemic core on admission CTP who had received excellent reperfusion (modified thrombolysis in cerebral infarction grade 2c/3). Poor outcome was defined as a modified Rankin scale score of 3-6 at 90 days. The ischemic core infarct territories were classified into the cortical and subcortical areas. Multivariate logistic regression and receiver operating characteristic (ROC) curve analyses were used in this study. RESULTS Of the 65 patients analyzed, 38 (58.5%) had a poor outcome. Multivariable logistic analysis showed that the subcortical infarcts (OR 11.75; 95% CI 1.79-77.32; P = 0.010) and their volume (OR 1.17; 95% CI 1.04-1.32; P = 0.011) were independently associated with poor outcome. The ROC curve indicated the capacity of the subcortical infarct involvement (areas under the curve (AUC) = 0.65; 95% CI, 0.53-0.77, P < 0.001) and subcortical infarct volume (AUC = 0.72; 95% CI, 0.60-0.83, P < 0.001) in predicting poor outcome accurately. CONCLUSION Subcortical infarcts and their volume on admission CTP are associated with poor outcome after excellent reperfusion in late time windows, rather than cortical infarcts.
Collapse
Affiliation(s)
- Heng Ni
- Department of Interventional Radiology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Rd, Nanjing, 210029, China
| | - Yu Hang
- Department of Interventional Radiology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Rd, Nanjing, 210029, China
| | - Chen-Dong Wang
- Department of Interventional Radiology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Rd, Nanjing, 210029, China
| | - Zhen-Yu Jia
- Department of Interventional Radiology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Rd, Nanjing, 210029, China
| | - Hai-Bin Shi
- Department of Interventional Radiology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Rd, Nanjing, 210029, China
| | - Sheng Liu
- Department of Interventional Radiology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Rd, Nanjing, 210029, China
| | - Lin-Bo Zhao
- Department of Interventional Radiology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Rd, Nanjing, 210029, China.
| |
Collapse
|
5
|
Peretz S, Pardo K, Naftali J, Findler M, Raphaeli G, Barnea R, Khasminsky V, Auriel E. Delayed CTP-Derived Deep Venous Outflow: A Novel Predictor of Striatocapsular Infarction after M1 Thrombectomy. AJNR Am J Neuroradiol 2022; 43:1608-1614. [PMID: 36265892 PMCID: PMC9731248 DOI: 10.3174/ajnr.a7670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 09/08/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND AND PURPOSE Isolated striatocapsular infarction occurs commonly in patients with ischemic stroke following M1 thrombectomy. We aimed to explore the correlation between CTP-derived parameters of deep venous outflow at presentation and subsequent striatocapsular infarction in a retrospective cohort of such patients. MATERIALS AND METHODS TTP and peak enhancement were measured on CTP-derived time-attenuation curves of the internal cerebral and thalamostriate veins bilaterally. The difference in TTP (ΔTTP) and the relative decrease in venous enhancement between the ischemic and normal sides were calculated. NCCT performed 24 (SD, 12) hours postthrombectomy was used to determine tissue fate in the caudate head, caudate body, lentiform nucleus, and internal capsule. Striatocapsular ischemia (striatocapsular infarction-positive) was defined as infarction and striatocapsular injury as either infarction, contrast enhancement, or hemorrhagic transformation in ≥1 of these regions. A striatocapsular ischemia score was calculated (0 = no ischemic region, 1 = 1 ischemic region, 2 = ≥2 ischemic regions). RESULTS One hundred sixteen patients were included in the analysis. Sixty-one patients had striatocapsular infarction (striatocapsular infarction-positive). The mean thalamostriate ΔTTP was 1.95 (SD, 1.9) seconds for patients positive for striatocapsular infarction and 0.79 (SD, 2.1) for patients negative for it (P = .010). Results were similar for striatocapsular injury. The mean thalamostriate ΔTTP was 0.79 (SD, 2.1), 1.68 (SD, 1.4), and 2.05 (SD, 2) for striatocapsular infarction scores of 0, 1, and 2, respectively (P = .030). CONCLUSIONS CTP-derived thalamostriate ΔTTP is an excellent surrogate marker for striatocapsular infarction in patients post-M1 thrombectomy. The novel approach of extracting venous outflow parameters from CTP has numerous potential applications and should be further explored.
Collapse
Affiliation(s)
- S Peretz
- From the Departments of Neurology (S.P., K.P., J.N., M.F., G.R., R.B., E.A.)
- Sackler School of Medicine (S.P., K.P., J.N., M.F., G.R., R.B., V.K., E.A.), Tel-Aviv University, Tel-Aviv, Israel
| | - K Pardo
- From the Departments of Neurology (S.P., K.P., J.N., M.F., G.R., R.B., E.A.)
- Sackler School of Medicine (S.P., K.P., J.N., M.F., G.R., R.B., V.K., E.A.), Tel-Aviv University, Tel-Aviv, Israel
| | - J Naftali
- From the Departments of Neurology (S.P., K.P., J.N., M.F., G.R., R.B., E.A.)
- Sackler School of Medicine (S.P., K.P., J.N., M.F., G.R., R.B., V.K., E.A.), Tel-Aviv University, Tel-Aviv, Israel
| | - M Findler
- From the Departments of Neurology (S.P., K.P., J.N., M.F., G.R., R.B., E.A.)
- Sackler School of Medicine (S.P., K.P., J.N., M.F., G.R., R.B., V.K., E.A.), Tel-Aviv University, Tel-Aviv, Israel
| | - G Raphaeli
- From the Departments of Neurology (S.P., K.P., J.N., M.F., G.R., R.B., E.A.)
- Sackler School of Medicine (S.P., K.P., J.N., M.F., G.R., R.B., V.K., E.A.), Tel-Aviv University, Tel-Aviv, Israel
| | - R Barnea
- From the Departments of Neurology (S.P., K.P., J.N., M.F., G.R., R.B., E.A.)
- Sackler School of Medicine (S.P., K.P., J.N., M.F., G.R., R.B., V.K., E.A.), Tel-Aviv University, Tel-Aviv, Israel
| | - V Khasminsky
- Radiology (V.K.), Rabin Medical Center, Beilinson Hospital, Petach Tikva, Israel
- Sackler School of Medicine (S.P., K.P., J.N., M.F., G.R., R.B., V.K., E.A.), Tel-Aviv University, Tel-Aviv, Israel
| | - E Auriel
- From the Departments of Neurology (S.P., K.P., J.N., M.F., G.R., R.B., E.A.)
- Sackler School of Medicine (S.P., K.P., J.N., M.F., G.R., R.B., V.K., E.A.), Tel-Aviv University, Tel-Aviv, Israel
| |
Collapse
|
6
|
Regenhardt RW, Bonkhoff AK, Bretzner M, Etherton MR, Das AS, Hong S, Alotaibi NM, Vranic JE, Dmytriw AA, Stapleton CJ, Patel AB, Leslie-Mazwi TM, Rost NS. Association of Infarct Topography and Outcome After Endovascular Thrombectomy in Patients With Acute Ischemic Stroke. Neurology 2022; 98:e1094-e1103. [PMID: 35101908 PMCID: PMC8935439 DOI: 10.1212/wnl.0000000000200034] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 01/03/2022] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND AND OBJECTIVES The care of patients with large vessel occlusion (LVO) stroke has been revolutionized by endovascular thrombectomy (EVT). While EVT has a large effect size, most patients treated with EVT remain disabled or die within 90 days. A better understanding of outcomes may influence EVT selection criteria, novel therapies, and prognostication. We sought to identify associations between outcomes and brain regions involved in ischemic lesions. METHODS For this cohort study, consecutive patients with LVO who were treated with EVT and underwent post-EVT MRI were identified from a tertiary referral center (2011-2019). Acute ischemic lesions were manually segmented from diffusion-weighted imaging and spatially normalized. Individual lesions were parcellated (atlas-defined 94 cortical regions, 14 subcortical nuclei, 20 white matter tracts) and reduced to 10 essential lesion patterns with the use of unsupervised dimensionality reduction techniques. Ninety-day modified Rankin Scale (mRS) score (>2) was modeled via bayesian regression, taking the 10 lesion patterns as inputs and controlling for lesion size, age, sex, acute NIH Stroke Scale (NIHSS) score, alteplase, prior stroke, intracerebral hemorrhage, and good reperfusion (Thrombolysis in Cerebral Infarction 2b-3). In comparative analyses, 90-day mRS score was modeled considering covariates only, and compartment-wise relevances for acute stroke severity and 90-day mRS score were evaluated. RESULTS There were 151 patients with LVO identified (age 68 ± 15 years, 52% female). The median NIHSS score was 16 (interquartile range 13-20); 56% had mRS score >2. Lesion locations predictive of 90-day mRS score involved bilateral but left hemispherically more pronounced precentral and postcentral gyri, insular and opercular cortex, and left putamen and caudate (area under the curve 0.91, highest probability density interval [HPDI] covering 90% certainty 0.90-0.92). The lesion location model outperformed the simpler model relying on covariates only (bayesian model comparison of 97% weight to the model with vs 3% weight to the model without lesion location). While lesions affecting subcortical nuclei had the highest relevance for stroke severity (posterior distribution mean 0.75, 90% HPDI 0.256-1.31), lesions affecting white matter tracts had the highest relevance for 90-day mRS score (0.656, 90% HPDI 0.0864-1.12). DISCUSSION These data describe the significance for outcomes of specific brain regions involved in ischemic lesions on MRI after EVT. Future work in additional datasets is needed to confirm these granular findings.
Collapse
Affiliation(s)
- Robert W Regenhardt
- From the Departments of Neurology (R.W.R., A.K.B., M.B., M.R.E., A.S.D., S.H., T.M.L.-M., N.S.R.), Neurosurgery (R.W.R., N.M.A., J.E.V., A.A.D., C.J.S., A.B.P., T.M.L.-M.), and Radiology (J.E.V., A.A.D.), Massachusetts General Hospital, Harvard Medical School, Boston.
| | - Anna K Bonkhoff
- From the Departments of Neurology (R.W.R., A.K.B., M.B., M.R.E., A.S.D., S.H., T.M.L.-M., N.S.R.), Neurosurgery (R.W.R., N.M.A., J.E.V., A.A.D., C.J.S., A.B.P., T.M.L.-M.), and Radiology (J.E.V., A.A.D.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Martin Bretzner
- From the Departments of Neurology (R.W.R., A.K.B., M.B., M.R.E., A.S.D., S.H., T.M.L.-M., N.S.R.), Neurosurgery (R.W.R., N.M.A., J.E.V., A.A.D., C.J.S., A.B.P., T.M.L.-M.), and Radiology (J.E.V., A.A.D.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Mark R Etherton
- From the Departments of Neurology (R.W.R., A.K.B., M.B., M.R.E., A.S.D., S.H., T.M.L.-M., N.S.R.), Neurosurgery (R.W.R., N.M.A., J.E.V., A.A.D., C.J.S., A.B.P., T.M.L.-M.), and Radiology (J.E.V., A.A.D.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Alvin S Das
- From the Departments of Neurology (R.W.R., A.K.B., M.B., M.R.E., A.S.D., S.H., T.M.L.-M., N.S.R.), Neurosurgery (R.W.R., N.M.A., J.E.V., A.A.D., C.J.S., A.B.P., T.M.L.-M.), and Radiology (J.E.V., A.A.D.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Sungmin Hong
- From the Departments of Neurology (R.W.R., A.K.B., M.B., M.R.E., A.S.D., S.H., T.M.L.-M., N.S.R.), Neurosurgery (R.W.R., N.M.A., J.E.V., A.A.D., C.J.S., A.B.P., T.M.L.-M.), and Radiology (J.E.V., A.A.D.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Naif M Alotaibi
- From the Departments of Neurology (R.W.R., A.K.B., M.B., M.R.E., A.S.D., S.H., T.M.L.-M., N.S.R.), Neurosurgery (R.W.R., N.M.A., J.E.V., A.A.D., C.J.S., A.B.P., T.M.L.-M.), and Radiology (J.E.V., A.A.D.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Justin E Vranic
- From the Departments of Neurology (R.W.R., A.K.B., M.B., M.R.E., A.S.D., S.H., T.M.L.-M., N.S.R.), Neurosurgery (R.W.R., N.M.A., J.E.V., A.A.D., C.J.S., A.B.P., T.M.L.-M.), and Radiology (J.E.V., A.A.D.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Adam A Dmytriw
- From the Departments of Neurology (R.W.R., A.K.B., M.B., M.R.E., A.S.D., S.H., T.M.L.-M., N.S.R.), Neurosurgery (R.W.R., N.M.A., J.E.V., A.A.D., C.J.S., A.B.P., T.M.L.-M.), and Radiology (J.E.V., A.A.D.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Christopher J Stapleton
- From the Departments of Neurology (R.W.R., A.K.B., M.B., M.R.E., A.S.D., S.H., T.M.L.-M., N.S.R.), Neurosurgery (R.W.R., N.M.A., J.E.V., A.A.D., C.J.S., A.B.P., T.M.L.-M.), and Radiology (J.E.V., A.A.D.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Aman B Patel
- From the Departments of Neurology (R.W.R., A.K.B., M.B., M.R.E., A.S.D., S.H., T.M.L.-M., N.S.R.), Neurosurgery (R.W.R., N.M.A., J.E.V., A.A.D., C.J.S., A.B.P., T.M.L.-M.), and Radiology (J.E.V., A.A.D.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Thabele M Leslie-Mazwi
- From the Departments of Neurology (R.W.R., A.K.B., M.B., M.R.E., A.S.D., S.H., T.M.L.-M., N.S.R.), Neurosurgery (R.W.R., N.M.A., J.E.V., A.A.D., C.J.S., A.B.P., T.M.L.-M.), and Radiology (J.E.V., A.A.D.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Natalia S Rost
- From the Departments of Neurology (R.W.R., A.K.B., M.B., M.R.E., A.S.D., S.H., T.M.L.-M., N.S.R.), Neurosurgery (R.W.R., N.M.A., J.E.V., A.A.D., C.J.S., A.B.P., T.M.L.-M.), and Radiology (J.E.V., A.A.D.), Massachusetts General Hospital, Harvard Medical School, Boston
| |
Collapse
|
7
|
Kaesmacher J, Kaesmacher M, Berndt M, Maegerlein C, Mönch S, Wunderlich S, Meinel TR, Fischer U, Zimmer C, Boeckh-Behrens T, Kleine JF. Early Thrombectomy Protects the Internal Capsule in Patients With Proximal Middle Cerebral Artery Occlusion. Stroke 2021; 52:1570-1579. [PMID: 33827247 PMCID: PMC8078129 DOI: 10.1161/strokeaha.120.031977] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE Proximal middle cerebral artery (MCA) occlusions impede blood flow to the noncollateralized lenticulostriate artery territory. Previous work has shown that this almost inevitably leads to infarction of the dependent gray matter territories in the striate even if perfusion is restored by mechanical thrombectomy. Purpose of this analysis was to evaluate potential sparing of neighboring fiber tracts, ie, the internal capsule. METHODS An observational single-center study of patients with proximal MCA occlusions treated with mechanical thrombectomy and receiving postinterventional high-resolution diffusion-weighted imaging was conducted. Patients were classified according to internal capsule ischemia (IC+ versus IC-) at the postero-superior level of the MCA lenticulostriate artery territory (corticospinal tract correlate). Associations of IC+ versus IC- with baseline variables as well as its clinical impact were evaluated using multivariable logistic or linear regression analyses adjusting for potential confounders. RESULTS Of 92 included patients with proximal MCA territory infarctions, 45 (48.9%) had an IC+ pattern. Longer time from symptom-onset to groin-puncture (adjusted odds ratio, 2.12 [95% CI, 1.19-3.76] per hour), female sex and more severe strokes were associated with IC+. Patients with IC+ had lower rates of substantial neurological improvement and functional independence (adjusted odds ratio, 0.26 [95% CI, 0.09-0.81] and adjusted odds ratio, 0.25 [95% CI, 0.07-0.86]) after adjustment for confounders. These associations remained unchanged when confining analyses to patients without ischemia in the corona radiata or the motor cortex and here, IC+ was associated with higher National Institutes of Health Stroke Scale motor item scores (β, +2.8 [95% CI, 1.5 to 4.1]) without a significant increase in nonmotor items (β, +0.8 [95% CI, -0.2 to 1.9). CONCLUSIONS Rapid mechanical thrombectomy with successful reperfusion of the lenticulostriate arteries often protects the internal capsule from subsequent ischemia despite early basal ganglia damage. Salvage of this eloquent white matter tract within the MCA lenticulostriate artery territory seems strongly time-dependent, which has clinical and pathophysiological implications.
Collapse
Affiliation(s)
- Johannes Kaesmacher
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Germany (J.K., M.K., M.B., C.M., S.M., C.Z., T.B.-B., J.F.K.).,University Institute of Diagnostic and Interventional Neuroradiology (J.K.), University Hospital Bern, Inselspital, University of Bern, Switzerland.,University Institute of Diagnostic and Interventional and Pediatric Radiology (J.K.), University Hospital Bern, Inselspital, University of Bern, Switzerland
| | - Mirjam Kaesmacher
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Germany (J.K., M.K., M.B., C.M., S.M., C.Z., T.B.-B., J.F.K.)
| | - Maria Berndt
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Germany (J.K., M.K., M.B., C.M., S.M., C.Z., T.B.-B., J.F.K.).,Department of Radiology, DONAUISAR Hospital, Deggendorf, Germany (M.B.)
| | - Christian Maegerlein
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Germany (J.K., M.K., M.B., C.M., S.M., C.Z., T.B.-B., J.F.K.)
| | - Sebastian Mönch
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Germany (J.K., M.K., M.B., C.M., S.M., C.Z., T.B.-B., J.F.K.)
| | - Silke Wunderlich
- Department of Neurology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Germany (S.W.)
| | - Thomas R Meinel
- Department of Neurology (T.R.M., U.F.), University Hospital Bern, Inselspital, University of Bern, Switzerland
| | - Urs Fischer
- Department of Neurology (T.R.M., U.F.), University Hospital Bern, Inselspital, University of Bern, Switzerland
| | - Claus Zimmer
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Germany (J.K., M.K., M.B., C.M., S.M., C.Z., T.B.-B., J.F.K.)
| | - Tobias Boeckh-Behrens
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Germany (J.K., M.K., M.B., C.M., S.M., C.Z., T.B.-B., J.F.K.)
| | - Justus F Kleine
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Germany (J.K., M.K., M.B., C.M., S.M., C.Z., T.B.-B., J.F.K.).,Department of Neuroradiology, Charité Universitätsmedizin Berlin, Germany (J.F.K.)
| |
Collapse
|
8
|
Al-Dasuqi K, Payabvash S, Torres-Flores GA, Strander SM, Nguyen CK, Peshwe KU, Kodali S, Silverman A, Malhotra A, Johnson MH, Matouk CC, Schindler JL, Sansing LH, Falcone GJ, Sheth KN, Petersen NH. Effects of Collateral Status on Infarct Distribution Following Endovascular Therapy in Large Vessel Occlusion Stroke. Stroke 2020; 51:e193-e202. [PMID: 32781941 DOI: 10.1161/strokeaha.120.029892] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND PURPOSE We aim to examine effects of collateral status and post-thrombectomy reperfusion on final infarct distribution and early functional outcome in patients with anterior circulation large vessel occlusion ischemic stroke. METHODS Patients with large vessel occlusion who underwent endovascular intervention were included in this study. All patients had baseline computed tomography angiography and follow-up magnetic resonance imaging. Collateral status was graded according to the criteria proposed by Miteff et al and reperfusion was assessed using the modified Thrombolysis in Cerebral Infarction (mTICI) system. We applied a multivariate voxel-wise general linear model to correlate the distribution of final infarction with collateral status and degree of reperfusion. Early favorable outcome was defined as a discharge modified Rankin Scale score ≤2. RESULTS Of the 283 patients included, 129 (46%) had good, 97 (34%) had moderate, and 57 (20%) had poor collateral status. Successful reperfusion (mTICI 2b/3) was achieved in 206 (73%) patients. Poor collateral status was associated with infarction of middle cerebral artery border zones, whereas worse reperfusion (mTICI scores 0-2a) was associated with infarction of middle cerebral artery territory deep white matter tracts and the posterior limb of the internal capsule. In multivariate regression models, both mTICI (P<0.001) and collateral status (P<0.001) were among independent predictors of final infarct volumes. However, mTICI (P<0.001), but not collateral status (P=0.058), predicted favorable outcome at discharge. CONCLUSIONS In this cohort of patients with large vessel occlusion stroke, both the collateral status and endovascular reperfusion were strongly associated with middle cerebral artery territory final infarct volumes. Our findings suggesting that baseline collateral status predominantly affected middle cerebral artery border zones infarction, whereas higher mTICI preserved deep white matter and internal capsule from infarction; may explain why reperfusion success-but not collateral status-was among the independent predictors of favorable outcome at discharge. Infarction of the lentiform nuclei was observed regardless of collateral status or reperfusion success.
Collapse
Affiliation(s)
- Khalid Al-Dasuqi
- Division of Neuroradiology (K.A.-D., S.P., G.A.T.-F., A.M., M.H.J.), Yale University School of Medicine, New Haven, CT
| | - Seyedmehdi Payabvash
- Division of Neuroradiology (K.A.-D., S.P., G.A.T.-F., A.M., M.H.J.), Yale University School of Medicine, New Haven, CT
| | - Gerardo A Torres-Flores
- Division of Neuroradiology (K.A.-D., S.P., G.A.T.-F., A.M., M.H.J.), Yale University School of Medicine, New Haven, CT
| | - Sumita M Strander
- Department of Radiology and Biomedical Imaging, Division of Neurocritical Care and Emergency Neurology, Department of Neurology (S.M.S., C.K.N., K.U.P., S.K., A.S., G.J.F., K.N.S., N.H.P.), Yale University School of Medicine, New Haven, CT
| | - Cindy Khanh Nguyen
- Department of Radiology and Biomedical Imaging, Division of Neurocritical Care and Emergency Neurology, Department of Neurology (S.M.S., C.K.N., K.U.P., S.K., A.S., G.J.F., K.N.S., N.H.P.), Yale University School of Medicine, New Haven, CT
| | - Krithika U Peshwe
- Department of Radiology and Biomedical Imaging, Division of Neurocritical Care and Emergency Neurology, Department of Neurology (S.M.S., C.K.N., K.U.P., S.K., A.S., G.J.F., K.N.S., N.H.P.), Yale University School of Medicine, New Haven, CT
| | - Sreeja Kodali
- Department of Radiology and Biomedical Imaging, Division of Neurocritical Care and Emergency Neurology, Department of Neurology (S.M.S., C.K.N., K.U.P., S.K., A.S., G.J.F., K.N.S., N.H.P.), Yale University School of Medicine, New Haven, CT
| | - Andrew Silverman
- Department of Radiology and Biomedical Imaging, Division of Neurocritical Care and Emergency Neurology, Department of Neurology (S.M.S., C.K.N., K.U.P., S.K., A.S., G.J.F., K.N.S., N.H.P.), Yale University School of Medicine, New Haven, CT
| | - Ajay Malhotra
- Division of Neuroradiology (K.A.-D., S.P., G.A.T.-F., A.M., M.H.J.), Yale University School of Medicine, New Haven, CT
| | - Michele H Johnson
- Division of Neuroradiology (K.A.-D., S.P., G.A.T.-F., A.M., M.H.J.), Yale University School of Medicine, New Haven, CT
| | - Charles C Matouk
- Division of Neurovascular Surgery, Department of Neurosurgery (C.C.M.), Yale University School of Medicine, New Haven, CT
| | - Joseph L Schindler
- Division of Vascular Neurology, Department of Neurology (J.L.S., L.H.S.), Yale University School of Medicine, New Haven, CT
| | - Lauren H Sansing
- Division of Vascular Neurology, Department of Neurology (J.L.S., L.H.S.), Yale University School of Medicine, New Haven, CT
| | - Guido J Falcone
- Department of Radiology and Biomedical Imaging, Division of Neurocritical Care and Emergency Neurology, Department of Neurology (S.M.S., C.K.N., K.U.P., S.K., A.S., G.J.F., K.N.S., N.H.P.), Yale University School of Medicine, New Haven, CT
| | - Kevin N Sheth
- Department of Radiology and Biomedical Imaging, Division of Neurocritical Care and Emergency Neurology, Department of Neurology (S.M.S., C.K.N., K.U.P., S.K., A.S., G.J.F., K.N.S., N.H.P.), Yale University School of Medicine, New Haven, CT
| | - Nils H Petersen
- Department of Radiology and Biomedical Imaging, Division of Neurocritical Care and Emergency Neurology, Department of Neurology (S.M.S., C.K.N., K.U.P., S.K., A.S., G.J.F., K.N.S., N.H.P.), Yale University School of Medicine, New Haven, CT
| |
Collapse
|
9
|
Liu F, Chen C, Hong L, Shen H, Cao W, Dong Q, Yang X, Guo M, Li Y, Xiao Y, Cheng X, Li G. Lenticulostriate arteries appearance before thrombectomy predicts good outcome in acute middle cerebral artery occlusion. BMC Neurol 2020; 20:139. [PMID: 32299387 PMCID: PMC7161229 DOI: 10.1186/s12883-020-01716-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 04/02/2020] [Indexed: 12/27/2022] Open
Abstract
Background Endovascular therapy is widely used in acute large vessel occlusion. This study investigated whether imaging of lateral lenticulostriate arteries (LSAs) before thrombectomy would potentially be helpful for predicting prognosis of patients with acute M1 segment of middle cerebral artery occlusion (MCAO). Methods 59 consecutive patients with acute M1 segment of MCAO treated with mechanical thrombectomy at two comprehensive stroke centers were analyzed. Patients were categorized into LSA+ (appearing of lateral LSAs) and LSA- (sparing of lateral LSAs) group according to preprocedural digital substraction angiography (DSA). Baseline data and clinical outcomes were compared. A good clinical outcome was defined as a modified Rankin Scale score of 0 to 2 at 3 months. The association between clinical and imaging parameters and functional outcome was evaluated with logistic regression analysis. Results LSA+ was shown in 36 patients (61%). LSA+ group had a significantly higher proportion of good outcome (72.2% vs. 8.7%, OR 27.3,95% CI 5.38–138.4, P < 0.001), lower risk of symptomatic intracranial haemorrhages (sICH) (8.3% vs. 47.8%,OR 0.10,95% CI 0.02–0.42, P = 0.001) and lower mortality in hospital (5.6% vs. 34.8%, OR 0.11,95% CI 0.02–0.58, P < 0.004) compared with LSA- group. Patients in LSA+ group had lower baseline NIHSS score(P < 0.01) and NIHSS score at 14 days(P < 0.01) and smaller infarct core volume (P = 0.016) on computed tomography perfusion imaging (CTP) compared to the LSA- group. Multivariate logistic regression analysis showed that a small infarct core volume (OR 6.74,95% CI 1.148–39.569, P = 0.035) and LSA+(OR 22.114,95% CI 3.339–146.470, P = 0.001) were associated with a good clinical outcome. Conclusions Our data suggest that appearance of lateral LSAs before mechanical thrombectomy would be potentially helpful for predicting favorable prognosis of patients with acute M1 segment of MCAO.
Collapse
Affiliation(s)
- Feifeng Liu
- Department of Neurology, Shanghai East Hospital, Tongji University, Shanghai, China
| | - Chen Chen
- Department of Neurology, Shanghai East Hospital, Tongji University, Shanghai, China
| | - Lan Hong
- Department of Neurology, Shanghai huashan hospital, Fudan University, Shanghai, China
| | - Hao Shen
- Department of Neurology, Shanghai East Hospital, Tongji University, Shanghai, China
| | - Wenjie Cao
- Department of Neurology, Shanghai huashan hospital, Fudan University, Shanghai, China
| | - Qiang Dong
- Department of Neurology, Shanghai huashan hospital, Fudan University, Shanghai, China
| | - Xinyi Yang
- Department of Neurology, Shanghai East Hospital, Tongji University, Shanghai, China
| | - Mengruo Guo
- Department of Neurology, Shanghai East Hospital, Tongji University, Shanghai, China
| | - Ying Li
- Department of Neurology, Shanghai East Hospital, Tongji University, Shanghai, China
| | - Yaping Xiao
- Department of Neurology, Shanghai East Hospital, Tongji University, Shanghai, China
| | - Xin Cheng
- Department of Neurology, Shanghai huashan hospital, Fudan University, Shanghai, China
| | - Gang Li
- Department of Neurology, Shanghai East Hospital, Tongji University, Shanghai, China.
| |
Collapse
|
10
|
Kim J, Kim CH, Kang J, Kwon OY. Predicting parenchymal hematoma associated with endovascular thrombectomy for acute occlusion of anterior circulation large vessel: the GuEss-MALiGn scale. JOURNAL OF NEUROCRITICAL CARE 2020. [DOI: 10.18700/jnc.190104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
|
11
|
Predictors for basal ganglia viability after mechanical thrombectomy in proximal middle cerebral artery occlusion. Clin Imaging 2019; 57:1-6. [DOI: 10.1016/j.clinimag.2019.04.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 03/30/2019] [Accepted: 04/23/2019] [Indexed: 11/18/2022]
|
12
|
Dobrocky T, Kaesmacher J, Bellwald S, Piechowiak E, Mosimann PJ, Zibold F, Jung S, Arnold M, Fischer U, Gralla J, Mordasini P. Stent-Retriever Thrombectomy and Rescue Treatment of M1 Occlusions Due to Underlying Intracranial Atherosclerotic Stenosis: Cohort Analysis and Review of the Literature. Cardiovasc Intervent Radiol 2019; 42:863-872. [DOI: 10.1007/s00270-019-02187-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 02/16/2019] [Indexed: 11/28/2022]
|
13
|
Baek BH, Yoon W, Lee YY, Park I, Kim SK. Impact of isolated basal ganglia infarction at pretreatment DWI on outcomes after endovascular thrombectomy in acute anterior circulation stroke. Neuroradiology 2018; 61:89-96. [PMID: 30402745 DOI: 10.1007/s00234-018-2126-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 10/30/2018] [Indexed: 01/19/2023]
Abstract
PURPOSE Acute infarction confined to the basal ganglia (BG) is occasionally observed on baseline imaging before endovascular thrombectomy. This study aimed to investigate the impact of isolated BG infarction revealed on pretreatment DWI in a large cohort of patients with acute anterior circulation stroke who underwent thrombectomy. METHODS We retrospectively analyzed clinical and DWI data from 328 patients who underwent thrombectomy for emergent occlusions of the intracranial internal carotid artery or the middle cerebral artery. Characteristics and treatment outcomes were compared between patients with isolated BG infarction and those with non-isolated BG infarction. Binary logistic regression analyses were performed to identify independent predictors of good outcome (90-day mRS 0-2). RESULTS Isolated BG infarction was found in 57 patients (17.4%). Patients with isolated BG infarction had a higher incidence of underlying severe intracranial atherosclerotic stenosis (21.1% vs. 10.7%, P = 0.032) than those with non-isolated BG infarction. Successful reperfusion occurred more frequently in patients with isolated BG infarction than those with non-isolated BG infarction (93% vs. 79%, odds ratio 3.529, 95% confidence interval 1.226-10.161, P = 0.014). On multivariate logistic regression analysis, independent predictors of good outcome were age, DWI-ASPECTS, and admission NIHSS score. There was no significant difference in the rate of good outcome between the two groups (54.4% vs. 42.8%, P = 0.110). CONCLUSION Isolated BG infarction on pretreatment DWI may predict successful reperfusion after endovascular thrombectomy in patients with acute anterior circulation stroke. In addition, our study suggested a novel finding that isolated BG infarction was more frequently associated with underlying severe ICAS than non-isolated BG infarction.
Collapse
Affiliation(s)
- Byung Hyun Baek
- Department of Radiology, Chonnam National University Medical School, 42 Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea
| | - Woong Yoon
- Department of Radiology, Chonnam National University Medical School, 42 Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea.
| | - Yun Young Lee
- Department of Radiology, Chonnam National University Medical School, 42 Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea
| | - Ilwoo Park
- Department of Radiology, Chonnam National University Medical School, 42 Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea
| | - Seul Kee Kim
- Department of Radiology, Chonnam National University Medical School, 42 Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea
| |
Collapse
|
14
|
Yu Y, Guo D, Lou M, Liebeskind D, Scalzo F. Prediction of Hemorrhagic Transformation Severity in Acute Stroke From Source Perfusion MRI. IEEE Trans Biomed Eng 2017; 65:2058-2065. [PMID: 29989941 DOI: 10.1109/tbme.2017.2783241] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
OBJECTIVE Hemorrhagic transformation (HT) is the most severe complication of reperfusion therapy in acute ischemic stroke (AIS) patients. Management of AIS patients could benefit from accurate prediction of upcoming HT. While prediction of HT occurrence has recently provided encouraging results, the prediction of the severity and territory of the HT could bring valuable insights that are beyond current methods. METHODS This study tackles these issues and aims to predict the spatial occurrence of HT in AIS from perfusion-weighted magnetic resonance imaging (PWI) combined with diffusion weighted imaging. In all, 165 patients were included in this study and analyzed retrospectively from a cohort of AIS patients treated with reperfusion therapy in a single stroke center. RESULTS Machine learning models are compared within our framework; support vector machines, linear regression, decision trees, neural networks, and kernel spectral regression were applied to the dataset. Kernel spectral regression performed best with an accuracy of $\text{83.7} \pm \text{2.6}\%$. CONCLUSION The key contribution of our framework formalize HT prediction as a machine learning problem. Specifically, the model learns to extract imaging markers of HT directly from source PWI images rather than from pre-established metrics. SIGNIFICANCE Predictions visualized in terms of spatial likelihood of HT in various territories of the brain were evaluated against follow-up gradient recalled echo and provide novel insights for neurointerventionalists prior to endovascular therapy.
Collapse
|
15
|
Sugiura Y, Yamagami H, Sakai N, Yoshimura S. Predictors of Symptomatic Intracranial Hemorrhage after Endovascular Therapy in Acute Ischemic Stroke with Large Vessel Occlusion. J Stroke Cerebrovasc Dis 2017; 26:766-771. [DOI: 10.1016/j.jstrokecerebrovasdis.2016.10.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 09/14/2016] [Accepted: 10/15/2016] [Indexed: 10/20/2022] Open
|
16
|
Kaesmacher J, Kaesmacher M, Maegerlein C, Zimmer C, Gersing AS, Wunderlich S, Friedrich B, Boeckh-Behrens T, Kleine JF. Hemorrhagic Transformations after Thrombectomy: Risk Factors and Clinical Relevance. Cerebrovasc Dis 2017; 43:294-304. [PMID: 28343220 DOI: 10.1159/000460265] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 01/28/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Hemorrhagic transformation (HT) is a major complication of acute ischemic stroke, potentially associated with clinical deterioration. We attempted to identify risk factors and evaluated clinical relevance of minor and major HTs following endovascular thrombectomy (ET) in isolated middle cerebral artery (MCA) occlusions. METHODS This is a retrospective single-center analysis of 409 patients with isolated MCA occlusion treated with ET. Patients' and procedural characteristics, severity of HT according to the European Cooperative Acute Stroke Study criteria, and clinical outcomes were analyzed. Multivariate logistic regression models with standard retention criteria (p < 0.1) were used to determine risk factors and clinical relevance of HT. Results are shown as adjusted OR (aOR) and respective 95% CIs. Good neurologic short-term outcome was defined as National Institutes of Health Stroke Scale (NIHSS) score <5 at the day of discharge. RESULTS Of 299 patients included, hemorrhagic infarction (HI) was detected in 87 patients, while 13 patients developed parenchymal hematoma (PH). Higher age (aOR 0.970, 95% CI 0.947-0.993, p = 0.012), eligibility for intravenous recombinant tissue plasminogen activator (IV rtPA; aOR 0.512, 95% CI 0.267-0.982, p = 0.044), and complete recanalization (TICI 3, aOR 0.408, 95% CI 0.210-0.789, p = 0.008) were associated with a lower risk of HI. Risk factors for HI included higher admission NIHSS score (aOR 1.080, 95% CI 1.010-1.153, p = 0.024) and higher admission glucose levels (aOR 1.493, 95% CI 1.170-1.904, p = 0.001). Further, female sex tended to be associated with a lower risk of HI (aOR 0.601, 95% CI 0.316-1.143, p = 0.121), while a statistical trend was observable for proximal MCA occlusion (aOR 1.856, 95% CI 0.945-3.646, p = 0.073) and a history of hypertension (aOR 2.176, 95% CI 0.932-5.080, p = 0.072) to increase risk of HI. Longer intervals from symptom onset to first digital subtraction angiography runs (aOR 1.013, 95% CI 1.003-1.022, p = 0.009), lower preinterventional Alberta Stroke Program Early CT score (aOR 0.536, 95% CI 0.307-0.936, p = 0.028) and wake-up stroke (aOR 18.540, 95% CI 1.352-254.276, p = 0.029) were associated with PH. Both, PH and HI were independently associated with lower rates of good neurologic outcome (aOR 0.086, 95% CI 0.008-0.902, p = 0.041 and aOR 0.282, 95% CI 0.131-0.606, p = 0.001). CONCLUSION Risk of HI following MCA occlusion and subsequent ET is mainly determined by factors influencing infarct severity. Good recanalization results seem to be protective against subsequent HI. Our results support the notion that occurrence of PH after ET is time dependent and risk increases with more extensive early ischemic damage. Both, HI and PH do not seem to be facilitated by bridging therapy with IV rtPA or the use of oral anticoagulants, but were independently associated with more severe neurologic disability. These results support the notion that HI is not a "benign" imaging sign.
Collapse
Affiliation(s)
- Johannes Kaesmacher
- Department of Neuroradiology, Klinikum rechts der Isar, TU München, Munich, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Hungerford JP, Hyer M, Turk AS, Turner RD, Chaudry MI, Fargen KM, Spiotta AM. Impact of ASPECT scores and infarct distribution on outcomes among patients undergoing thrombectomy for acute ischemic stroke with the ADAPT technique. J Neurointerv Surg 2016; 9:823-829. [DOI: 10.1136/neurintsurg-2016-012528] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 07/20/2016] [Accepted: 07/29/2016] [Indexed: 11/03/2022]
Abstract
ObjectiveTo investigate the associations between Alberta Stroke Program Early CT Score (ASPECTS) or distribution and sidedness of acute infarction and clinical outcomes following intervention with a direct aspiration first pass technique (ADAPT).MethodsA review was performed of patients who had undergone thrombectomy with ADAPT for emergent large vessel occlusions of the middle cerebral artery (MCA) between December 2012 and May 2015. Preintervention CT scans were reviewed by a blinded radiologist to calculate ASPECTS and determine the distribution of infarction. Clinical outcomes were compared for subsets of patients depending upon ASPECTS and regional infarction distribution (cortical, subcortical, or both).ResultsOne hundred and fifty-four patients (50% female, mean age 67) underwent thrombectomy using ADAPT for MCA emergent large vessel occlusion. The median presenting National Institute of Health Stroke Scale score was 15. Fifty-five per cent of patients had left-side occlusions. Similar good outcomes were achieved for patients with perfect and non-perfect ASPECTS (modified Rankin Scale (mRS) 0–2: 63% vs 51%, respectively; p=0.20). Similar outcomes were also achieved for patients with ‘poor’ ASPECTS (≤6) compared with those with ASPECTS >6 (mRS 0–2: 52% vs 53%, respectively; p=0.91). Regional distribution and sidedness of core infarction on preintervention CT also did not correlate with worse outcomes.ConclusionsPatients with moderate-sized core infarcts involving various distributions in either hemisphere can potentially achieve similar good outcomes compared with those with no core infarction at presentation. A treatment algorithm for acute ischemic stroke, which employs hardline ASPECTS thresholds or excludes patients with basal ganglia infarcts, might preclude patients who would potentially benefit from mechanical thrombectomy with ADAPT.
Collapse
|
18
|
Kleine JF, Beller E, Zimmer C, Kaesmacher J. Lenticulostriate infarctions after successful mechanical thrombectomy in middle cerebral artery occlusion. J Neurointerv Surg 2016; 9:234-239. [PMID: 26940316 DOI: 10.1136/neurintsurg-2015-012243] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 02/10/2016] [Accepted: 02/11/2016] [Indexed: 11/03/2022]
Abstract
BACKGROUND In stroke due to middle cerebral artery (MCA) occlusion, collaterals may sustain tissue in the peripheral MCA territory, extending the time window for recanalizing therapies. However, MCA occlusions often block some or all of the 'lenticulostriate' (LS) arteries originating from the M1 segment, eliminating blood flow to dependent territories in the striatum, which have no collateral supply. This study examines whether mechanical thrombectomy (MTE) can avert imminent striatal infarction in patients with acute MCA occlusion. METHODS 279 patients with isolated MCA occlusion subjected to MTE were included. Actual LS occlusions and infarctions were assigned to predefined 'LS occlusion' and 'LS infarct' patterns derived from known LS vascular anatomy. The predictive performance of LS occlusion patterns regarding ensuing infarction in striatal subterritories was assessed by standard statistical measures. RESULTS LS occlusion patterns predicted infarction in associated striatal subterritories with a positive predictive value (PPV) of 91% and a negative predictive value of 81%. In 15 of the 22 patients who did not develop the predicted striatal infarctions, reassessment of angiographies revealed LS vascular supply variants that explained these 'false positive' LS occlusion patterns, raising the PPV to 96%. Symptom onset to recanalization times were relatively short, but this alone could not account for the false positive LS occlusion patterns in the remaining seven of these patients. CONCLUSIONS With currently achievable symptom onset to recanalization times, striatal infarctions are determined by MCA occlusion sites and individual vascular anatomy, and cannot normally be averted by MTE, but there are exceptions. Further study of such exceptional cases may yield important insights into the determinants of infarct growth in the hyperacute phase of infarct evolution.
Collapse
Affiliation(s)
- Justus F Kleine
- Department of Neuroradiology, Klinikum Rechts der Isar, TU München, München, Germany
| | - Ebba Beller
- Department of Neuroradiology, Klinikum Rechts der Isar, TU München, München, Germany
| | - Claus Zimmer
- Department of Neuroradiology, Klinikum Rechts der Isar, TU München, München, Germany
| | - Johannes Kaesmacher
- Department of Neuroradiology, Klinikum Rechts der Isar, TU München, München, Germany
| |
Collapse
|
19
|
Raychev R, Jahan R, Liebeskind D, Clark W, Nogueira RG, Saver J. Determinants of Intracranial Hemorrhage Occurrence and Outcome after Neurothrombectomy Therapy: Insights from the Solitaire FR With Intention For Thrombectomy Randomized Trial. AJNR Am J Neuroradiol 2015; 36:2303-7. [PMID: 26316567 DOI: 10.3174/ajnr.a4482] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 04/16/2015] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Intracranial hemorrhage is the most dreaded complication of neurothrombectomy therapy for acute ischemic stroke. The determinants of intracranial hemorrhage and its impact on clinical course remain incompletely delineated. The purpose of this study is to further investigate the clinical and procedural factors leading to intracranial hemorrhage and to define the clinical impact of different hemorrhagic subtypes. MATERIALS AND METHODS We analyzed data prospectively collected in the Solitaire FR With Intention for Thrombectomy randomized clinical trial. A multivariable logistic regression model was used to identify independent clinical, imaging, and procedural predictors of any intracranial hemorrhage and of 7 intracranial hemorrhage subtypes. Univariate analysis was used to determine the impact of each of the intracranial hemorrhage subtypes on clinical outcome. RESULTS Among the 144 enrolled patients, any radiologic intracranial hemorrhage (21.3% versus 38.2%, P = .035), symptomatic intracranial hemorrhage (1.1% versus 10.9%, P = .012), and subarachnoid hemorrhage (2.2% versus 12.7%, P = .027) occurred less frequently in the Solitaire FR than in the Merci retriever arms. The most common independent determinant of hemorrhage occurrence was rescue therapy with intra-arterial rtPA, which was associated with any intracranial hemorrhage and 4 subtypes and tended to be used more frequently in the Merci group (10.9% versus 3.4%; P = .09). Among the hemorrhage subtypes, basal ganglionic hemorrhage had the strongest impact on good clinical outcome at 90 days (OR, 0.30; P = .025) and was associated with higher reperfusion, prolonged time to treatment, and rescue therapy with intra-arterial rtPA. CONCLUSIONS Intracranial hemorrhage, especially subarachnoid and symptomatic intracerebral hemorrhage, occurs less frequently with the Solitaire FR than the Merci retriever, in part due to less frequent use of rescue therapy with intra-arterial rtPA. Basal ganglionic hemorrhage strongly affects clinical outcome and is distinctively related to late reperfusion.
Collapse
Affiliation(s)
- R Raychev
- From the Department of Neurology (R.R., D.L., J.S.) Stroke Center (R.R., R.J., D.L., J.S.), University of California, Los Angeles, Los Angeles, California
| | - R Jahan
- Division of Interventional Neuroradiology (R.J.) Stroke Center (R.R., R.J., D.L., J.S.), University of California, Los Angeles, Los Angeles, California
| | - D Liebeskind
- From the Department of Neurology (R.R., D.L., J.S.) Stroke Center (R.R., R.J., D.L., J.S.), University of California, Los Angeles, Los Angeles, California
| | - W Clark
- Oregon Stroke Center (W.C.), Oregon Health and Sciences University, Portland, Oregon
| | - R G Nogueira
- Department of Neurology (R.G.N.), Emory University, Atlanta, Georgia
| | - J Saver
- From the Department of Neurology (R.R., D.L., J.S.) Stroke Center (R.R., R.J., D.L., J.S.), University of California, Los Angeles, Los Angeles, California
| | | |
Collapse
|
20
|
Tateishi Y, Wisco D, Aoki J, George P, Katzan I, Toth G, Hui F, Hussain MS, Uchino K. Large deep white matter lesions may predict futile recanalization in endovascular therapy for acute ischemic stroke. INTERVENTIONAL NEUROLOGY 2015; 3:48-55. [PMID: 25999992 DOI: 10.1159/000369835] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
OBJECTIVE This study investigated whether large ischemic lesions in the deep white matter (DWM) on pretreatment diffusion-weighted MRI (DWI) predict futile recanalization. METHODS Consecutive acute stroke patients with anterior circulation ischemia who underwent successful arterial recanalization with thrombolysis in cerebral infarction grade 2b or 3 were enrolled. A large DWI-DWM lesion was defined as a hyperintense lesion in the DWM on initial DWI, located mainly between the anterior and posterior horns of the lateral ventricle. The Alberta Stroke Program Early CT score on CT and DWI and stroke volume on initial DWI were recorded. Stroke severity was assessed using the National Institutes of Health Stroke Scale (NIHSS) score. Futile recanalization was defined as a 30-day modified Rankin scale score of 3-6 despite successful recanalization. Univariate and multivariate regression analyses were performed to identify predictors of futile recanalization. RESULTS In 35 of 46 patients (76%) with successful recanalization, futile recanalization was observed in 20 patients (57%). Patients with futile recanalization were older (median age 74 vs. 58 years; p = 0.053), had higher initial NIHSS scores (median 17 vs. 9; p = 0.042), and a higher prevalence of large DWI-DWM lesions (45 vs. 9%; p = 0.022). Logistic regression analysis showed that a large DWI-DWM lesion was an independent predictor of futile recanalization (OR 13.97; 95% CI 1.32-147.73; p = 0.028). CONCLUSION Patients with large preintervention DWI-DWM lesions may be poor candidates for endovascular therapy.
Collapse
Affiliation(s)
- Yohei Tateishi
- Cerebrovascular Center, Department of Neurology and Strokology, Nagasaki University Hospital, Nagasaki City, Tokyo, Japan ; Cerebrovascular Center, Cleveland Clinic, Cleveland, Ohio, USA
| | - Dolora Wisco
- Cerebrovascular Center, Cleveland Clinic, Cleveland, Ohio, USA
| | - Junya Aoki
- Department of Neurological Science, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Pravin George
- Cerebrovascular Center, Cleveland Clinic, Cleveland, Ohio, USA
| | - Irene Katzan
- Cerebrovascular Center, Cleveland Clinic, Cleveland, Ohio, USA
| | - Gabor Toth
- Cerebrovascular Center, Cleveland Clinic, Cleveland, Ohio, USA
| | - Ferdinand Hui
- Cerebrovascular Center, Cleveland Clinic, Cleveland, Ohio, USA
| | | | - Ken Uchino
- Cerebrovascular Center, Cleveland Clinic, Cleveland, Ohio, USA
| |
Collapse
|
21
|
Presence of anterior temporal artery associates with good outcome in acute atherosclerotic M1-middle cerebral artery occlusion. Neuroradiology 2014; 56:1023-30. [PMID: 25200620 DOI: 10.1007/s00234-014-1422-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 08/25/2014] [Indexed: 10/24/2022]
Abstract
INTRODUCTION We aim to investigate the correlation between presence of anterior temporal artery (ATA), the first major branch of middle cerebral artery (MCA), on conventional angiography and clinical outcome in patients with acute atherosclerotic M1-MCA occlusion. METHODS Consecutive patients with acute atherosclerotic M1-MCA occlusion from Nanjing Stroke Registry Program (NSRP) between January 2007 and December 2012 were included in this study. All patients underwent MRI followed by conventional angiography. From their data, we analyzed baseline characteristics, infarction patterns, DWI-ASPECTS, and collateral circulation. The correlation of ATA presence and good clinical outcome, modified Rankin Scale (mRS) score ≤ 2, at 3 months was also calculated. RESULTS In 98 patients meeting entry criteria, the presence of ATA was found in 44 patients. Patients with ATA present were found to have less hypertension (p = 0.042), lower baseline National Institutes of Health Stroke Scale (NIHSS) (p = 0.043), more small infarcts in perforating artery territory (p = 0.013), and a higher number of DWI-ASPECTS ≥ 7 (p = 0.034). Binary logistic regression analysis showed an adjusted odds ratio of 4.45 for a good outcome in patients with ATA presence (95% CI 1.52 to 13.03, p = 0.007). CONCLUSION The presence of ATA can be used as a predictor of good outcome in patients with acute atherosclerotic M1-MCA occlusion.
Collapse
|
22
|
Spiotta AM, Vargas J, Hawk H, Turner R, Chaudry MI, Battenhouse H, Turk AS. Impact of the ASPECT scores and distribution on outcome among patients undergoing thrombectomy for acute ischemic stroke. J Neurointerv Surg 2014; 7:551-8. [PMID: 24916415 DOI: 10.1136/neurintsurg-2014-011195] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 05/19/2014] [Indexed: 11/03/2022]
Abstract
INTRODUCTION This study investigates whether the Alberta Stroke Program Early CT Score (ASPECTS) quantification is associated with outcome following mechanical thrombectomy. OBJECTIVE To determine whether preintervention non-perfect ASPECT scores involving cortical or subcortical regions and the side of the non-perfect ASPECT score affects outcomes. METHODS A retrospective review of a prospectively maintained database of patients with acute ischemic stroke involving the anterior circulation who underwent thrombectomy between May 2008 and August 2012 at a single tertiary care center. The device for mechanical thrombectomy used was the penumbra aspiration system (Penumbra Inc, Alameda, California, USA) and the Solitaire stent retriever (ev3, Irvine, California, USA). A 'blinded' neuroradiologist obtained ASPECTS quantification and noted each region demonstrating early changes. RESULTS 149 patients (51.7% female, mean age 66.1±15.1 years) were included with an average National Institutes of Health Stroke Scale of 16.2±6.7. Patients with non-perfect ASPECT scores on pretreatment imaging were more likely to have a hemorrhagic conversion (p=0.04) evident on post-procedure CT. However, functional outcomes were the same. Patients with both cortical and basal ganglia non-perfect ASPECT scores were more likely to be in a persistent vegetative state or expire. No differences were identified in outcome among patients with left- versus right-sided infarcts affecting the basal ganglia or cortical regions. CONCLUSIONS These findings support a strategy of selecting candidacy for thrombectomy that does not exclude patients with non-perfect ASPECT scores involving either the basal ganglia or cortical regions. Outcomes were identical among patients with no non-perfect ASPECT scores and those with cortical or subcortical infarcts, despite a higher incidence of hemorrhagic conversion found among those with non-perfect ASPECT scores.
Collapse
Affiliation(s)
- Alejandro M Spiotta
- Division of Neurosurgery, Department of Neurosciences, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Jan Vargas
- Division of Neurosurgery, Department of Neurosciences, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Harris Hawk
- Department of Radiology, Neurointerventional, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Raymond Turner
- Division of Neurosurgery, Department of Neurosciences, Medical University of South Carolina, Charleston, South Carolina, USA
| | - M Imran Chaudry
- Department of Radiology, Neurointerventional, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Holly Battenhouse
- Data Coordination Unit, Department of Public Health Services, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Aquilla S Turk
- Department of Radiology, Neurointerventional, Medical University of South Carolina, Charleston, South Carolina, USA
| |
Collapse
|
23
|
Natarajan SK, Eller JL, Snyder KV, Hopkins LN, Levy EI, Siddiqui AH. Endovascular treatment of acute ischemic stroke. Neuroimaging Clin N Am 2013; 23:673-94. [PMID: 24156858 DOI: 10.1016/j.nic.2013.03.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Endovascular stroke therapy has revolutionized the management of patients with acute ischemic stroke in the last decade and has facilitated the development of sophisticated stroke imaging techniques and a multitude of thrombectomy devices. This article reviews the scientific basis and current evidence available to support endovascular revascularization and provides brief technical details of the various methods of endovascular thrombectomy with case examples.
Collapse
Affiliation(s)
- Sabareesh K Natarajan
- Department of Neurosurgery, School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, 100 High Street, Suite B4, Buffalo, NY 14203, USA; Department of Neurosurgery, Kaleida Health, 100 High Street, Suite B4, Buffalo, NY 14203, USA
| | | | | | | | | | | |
Collapse
|
24
|
Patel VN, Gupta R, Horn CM, Thomas TT, Nogueira RG. The neuro-critical care management of the endovascular stroke patient. Curr Treat Options Neurol 2013; 15:113-24. [PMID: 23319133 DOI: 10.1007/s11940-012-0216-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OPINION STATEMENT Acute ischemic stroke carries high morbidity and mortality. The advent of intravenous thrombolysis and endovascular reperfusion techniques have helped improve clinical outcomes for patients with large vessel acute ischemic stroke. The care of the post-endovascular stroke patient is complex and encompasses almost all aspects of medicine. Hemodynamics should be optimized post procedure to ensure adequate cerebral perfusion and strict hemodynamic parameters must be adhered to minimize reperfusion injury. Though no studies have specifically examined hemodynamic goals, our practice is to maintain a mean arterial pressure (MAP) > 70 and systolic blood pressure (SBP) < 140 for patients following successful recanalization. Early anti-thrombotic therapy is indicated in patients with stent placement. It remains less clear which patients may benefit from additional anticoagulation or therapy with IIb/IIIa inhibitors. Careful consideration must be paid to volume status to reduce risk of contrast nephropathy and maximize cerebral perfusion. Oral care and attention to dysphagia are key in preventing aspiration pneumonia. Glycemic control should be optimized to avoid excessive hyper and hypoglycemia. In the absence of data to guide treatment of anemia, our practice is to transfuse asymptomatic anemia when Hgb < 7 mg/dL, or if the patient is symptomatic or hemodynamically unstable. Neuro-protective strategies should be considered in the context of clinical trials until further studies are complete. At a minimum, fever should be treated aggressively. Young patients with good pre-morbid functional status who continue to have large volume infarcts may benefit from decompressive hemicraniectomy. When appropriate, aggressive and early mobilization is recommended to prepare patients for acute rehabilitation. Because randomized prospective data is lacking, patients should be encouraged to enroll in clinical trials to optimize care of this growing patient population.
Collapse
Affiliation(s)
- Vishal N Patel
- Department of Neurology, Marcus Stroke and Neuroscience Center, Grady Memorial Hospital, Emory University School of Medicine, Emory Faculty Office Building, 80 Jessee Hill Jr Drive, SE Room 398, Atlanta, GA, 30303, USA
| | | | | | | | | |
Collapse
|
25
|
Shi ZS, Duckwiler GR, Loh Y, Liebeskind DS, Gonzalez NR, Tateshima S, Jahan R, Saver JL, Viñuela F. Impact of Merci device fracture on clinical outcome of acute ischemic stroke after mechanical thrombectomy. CNS Neurosci Ther 2012; 18:841-6. [PMID: 22900956 DOI: 10.1111/j.1755-5949.2012.00377.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Revised: 06/15/2012] [Accepted: 06/19/2012] [Indexed: 11/30/2022] Open
Abstract
AIMS To investigate the frequency and predictors of Merci device fracture in patients with acute ischemic stroke treated with mechanical thrombectomy and its impact on clinical outcome. METHODS We retrospectively analyzed patients with acute ischemic stroke treated by thrombectomy with the Merci Retriever and identified the presence of device fracture. The predictors of device fracture were assessed. We evaluated the impact of device fracture on hemorrhage and clinical outcome. RESULTS Of 136 patients treated by thrombectomy, 6 (4.4%) experienced intraprocedural Merci device fracture. Internal carotid artery occlusion was associated with device fracture. The fractured X and L series Merci Retrievers were successfully ensnared in four patients. Patients with fractured devices had similar rates of successful revascularization with those without. In patients with fractured devices, no parenchymal hematomas were found, while hemorrhagic infarction and subarachnoid hemorrhage were found in three and two patients, respectively. Patients with fractured devices tended to be more dependent (modified Rankin Scale ≥ 3) at discharge, but had similar rates of in-hospital mortality. CONCLUSIONS Merci device fracture is relatively infrequent in patients with acute ischemic stroke treated with thrombectomy. This complication may not increase the risk of parenchymal hematoma but tends to be associated with poor outcome.
Collapse
Affiliation(s)
- Zhong-Song Shi
- Department of Neurosurgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
| | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Shi ZS, Loh Y, Liebeskind DS, Saver JL, Gonzalez NR, Tateshima S, Jahan R, Feng L, Vespa PM, Starkman S, Salamon N, Villablance JP, Ali LK, Ovbiagele B, Kim D, Viñuela F, Duckwiler GR. Leukoaraiosis predicts parenchymal hematoma after mechanical thrombectomy in acute ischemic stroke. Stroke 2012; 43:1806-11. [PMID: 22581819 DOI: 10.1161/strokeaha.111.649152] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE The purpose of this study was to determine whether leukoaraiosis (LA) predicts hemorrhagic transformation and poor outcome in patients with acute ischemic stroke treated by mechanical thrombectomy. METHODS We retrospectively analyzed patients with anterior circulation stroke treated with Merci devices and identified LA in the deep white matter (DWM) and periventricular white matter on the preintervention MR images. We dichotomized patients into those with moderate or severe LA in the DWM versus those without. Hemorrhage rates and outcomes were evaluated between 2 groups. We analyzed the association of moderate or severe LA with hemorrhagic transformation and poor outcome. RESULTS Twenty-six of 105 patients had moderate or severe LA in the DWM. Patients with moderate or severe LA in the DWM were older, had more severe neurological deficits and worse outcome, had higher rates of hemorrhagic transformation and parenchymal hematoma, but had equivalent rates of hemorrhagic infarct and subarachnoid hemorrhage when compared with those without. Patients with only periventricular LA did not have a higher rate of parenchymal hematoma. Moderate or severe LA in the DWM was an independent predictor of hemorrhagic transformation (OR, 3.4; P=0.019) and parenchymal hematoma (OR, 6.3; P=0.005). Patients with parenchymal hematoma were less often independent (modified Rankin Scale≤2, 3.8% versus 32.5%; P=0.003) and had greater in-hospital mortality (50% versus 10.4%; P<0.001). CONCLUSIONS Moderate or severe LA in the DWM increases the risk of parenchymal hematoma after Merci thrombectomy for patients with acute stroke. These findings require validation in a larger prospective study.
Collapse
Affiliation(s)
- Zhong-Song Shi
- Department of Neurosurgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Loh Y, Shi Z, Liebeskind D, Jahan R, Gonzalez N, Vespa PM, Starkman S, Saver JL, Tateshima S, Vinuela F, Duckwiler G. Incomplete mechanical recanalization of middle cerebral artery occlusions facilitates endogenous recanalization within 5 h. J Neurointerv Surg 2012; 5:217-20. [PMID: 22315286 DOI: 10.1136/neurintsurg-2011-010207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND AND PURPOSE Successful revascularization can often improve functional outcome after large intracranial arterial occlusions. However, incomplete or unsuccessful recanalization is often the end result after attempted mechanical thrombectomy. A study was undertaken to determine whether partial recanalization of proximal isolated middle cerebral artery (MCA) occlusions facilitates endogenous thrombolysis and spontaneous recanalization. METHODS We retrospectively analyzed consecutive patients with acute ischemic stroke undergoing mechanical thrombectomy using the Merci Retriever System for occlusions involving any portion of the M1 segment of the MCA. Only those patients with a residual obstruction of the proximal MCA segments were included. The rates of facilitated endogenous recanalization (FER₅) by imaging within the 5 h following intervention were compared in patients with partial proximal recanalization and those in whom recanalization was unsuccessful. RESULTS Forty-two patients were included in the analysis. Twenty-six patients had good recanalization of the proximal aspect of the target lesion with an arterial occlusive lesion score of 2 or 3 but a residual partial or total occlusion of the MCA, while 16 patients failed to recanalize any portion of the target occlusion. Twelve patients (46%) in the first group and only one (5.9%) in the second group had facilitated endogenous recanalization on interval imaging 5 h after intervention (OR 12.9, 95% CI 1.5 to 112.2). Nine patients with proximal recanalization had good clinical outcomes at discharge (mRS ≤2) compared with none without recanalization (p=0.01), but FER did not have a relationship with clinical outcome. CONCLUSIONS Despite initially incomplete proximal mechanical thrombectomy, nearly half of all patients with residual M1 occlusions will undergo further endogenous recanalization within the subsequent 5 h.
Collapse
Affiliation(s)
- Yince Loh
- Department of Medicine, Madigan Army Medical Center, Tacoma, Washington 98431, USA.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Amar AP. Brain and vascular imaging of acute stroke. World Neurosurg 2012; 76:S3-8. [PMID: 22182269 DOI: 10.1016/j.wneu.2011.07.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2011] [Revised: 06/07/2011] [Accepted: 07/06/2011] [Indexed: 11/25/2022]
Abstract
Contemporary imaging technologies permit the rapid and accurate assessment of the acute stroke patient. These studies form the underpinning of all therapeutic approaches. Although unenhanced computed tomography remains the principal diagnostic examination to exclude hemorrhagic stroke, multimodal computed tomography and magnetic resonance imaging can be use to assess cerebral perfusion and may reveal the ischemic penumbra, thus leading to better patient selection for intravenous or intra-arterial reperfusion strategies.
Collapse
Affiliation(s)
- Arun Paul Amar
- Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
| |
Collapse
|
29
|
Tenser MS, Amar AP, Mack WJ. Mechanical thrombectomy for acute ischemic stroke using the MERCI retriever and penumbra aspiration systems. World Neurosurg 2012; 76:S16-23. [PMID: 22182267 DOI: 10.1016/j.wneu.2011.07.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2011] [Revised: 06/08/2011] [Accepted: 07/06/2011] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Intracranial large-vessel ischemia is associated with poor clinical outcome and increased mortality. Early reperfusion of ischemic tissue remains the goal of treatment of stroke. Intravenous tissue plasminogen activator (IV tPA) has been shown to improve clinical outcomes for patients who experience ischemic stroke, but it has been shown to be less efficacious for large-vessel occlusions. Mechanical clot extraction provides a therapeutic option for those who are ineligible for, or who do not respond to, conventional ischemic stroke treatment. METHODS We reviewed the initial studies of the Merci Retriever and Penumbra System for mechanical clot extraction. Baseline patient characteristics, as well as revascularization rates and clinical outcome, were examined. RESULTS Baseline National Institutes of Health Stroke Scale scores were greater than those observed in previous IV tPA studies, consistent with large-vessel occlusion. Successful recanalization occurred more frequently than with IV tPA and was associated with improved clinical outcome and mortality. Symptomatic intracranial hemorrhage and mortality rates were greater than those seen with IV tPA. CONCLUSIONS Mechanical clot extraction can be performed safely in patients with large-vessel occlusions, and successful recanalization resulted in better clinical outcomes than those without. Mechanical thrombectomy provides a therapeutic option for ischemic stroke patients who are ineligible for, or who do not respond to, IV thrombolytics. Further studies, including randomized clinical trials, are needed to validate these findings.
Collapse
Affiliation(s)
- Matthew S Tenser
- Department of Neurosurgery, University of Southern California, Los Angeles, California, USA.
| | | | | |
Collapse
|
30
|
Rosso C, Colliot O, Valabrègue R, Crozier S, Dormont D, Lehéricy S, Samson Y. Tissue at risk in the deep middle cerebral artery territory is critical to stroke outcome. Neuroradiology 2011; 53:763-71. [DOI: 10.1007/s00234-011-0916-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2011] [Accepted: 07/08/2011] [Indexed: 10/18/2022]
|
31
|
Abstract
This review summarizes the current state-of-the-art regarding the endovascular management of acute ischemic stroke. Beginning with intravenous tissue plasminogen activator, this paper traces the gradual shift of systemic thrombolysis from a competing to complementary treatment modality. Intra-arterial thrombolysis, mechanical thrombectomy with the Merci (Concentric Medical, Mountain View, California) and Penumbra (Penumbra, Inc., Alameda, California) systems, angioplasty, primary intracranial stenting, and emerging stentriever devices are sequentially reviewed. Ultimately, this paper lays the foundation for current endovascular stroke management and considers future areas of progress and research.
Collapse
|
32
|
|
33
|
Loh Y, Liebeskind DS, Towfighi A, Vespa P, Starkman S, Saver JL, Gonzalez NR, Tateshima S, Jahan R, Shi ZS, Viñuela F, Duckwiler GR. Preprocedural Basal Ganglionic Infarction Increases the Risk of Hemorrhagic Transformation but Not Worse Outcome Following Successful Recanalization of Acute Middle Cerebral Artery Occlusions. World Neurosurg 2010; 74:636-40. [DOI: 10.1016/j.wneu.2010.06.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2010] [Accepted: 06/04/2010] [Indexed: 11/27/2022]
|
34
|
Reperfusion for acute ischemic stroke: arterial revascularization and collateral therapeutics. Curr Opin Neurol 2010; 23:36-45. [PMID: 19926989 DOI: 10.1097/wco.0b013e328334da32] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
PURPOSE OF REVIEW Reperfusion of the ischemic territory forms the basis of most acute stroke treatments. This overview of the literature relating to reperfusion in acute ischemic stroke published within the last year provides a snapshot of a rapidly evolving aspect of cerebrovascular disease. RECENT FINDINGS Arterial revascularization from systemic thrombolysis to combination endovascular procedures to achieve recanalization has proliferated. Stroke imaging continues to discern features of critical pathophysiology that may influence tissue fate and clinical outcome. Balancing the risk of hemorrhagic transformation against the therapeutic aim to salvage the ischemic penumbra remains a formidable challenge. Collateral therapeutics that enhance perfusion outside the ischemic core present novel dimension to acute stroke therapy, focused on ischemia and not just the clot or plaque. SUMMARY These timely findings illustrate the essential role of reperfusion in acute stroke, delineating aspects of arterial revascularization and collateral therapeutics to be refined in coming years.
Collapse
|