1
|
Nakagawa I, Kotsugi M, Yokoyama S, Maeoka R, Takeshima Y, Matsuda R, Yamada S, Nakase H. Parenchymal Blood Volume Changes Immediately After Endovascular Thrombectomy Predict Futile Recanalization in Patients with Emergent Large Vessel Occlusion. World Neurosurg 2023; 176:e711-e718. [PMID: 37295462 DOI: 10.1016/j.wneu.2023.06.006] [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: 01/15/2023] [Revised: 06/01/2023] [Accepted: 06/02/2023] [Indexed: 06/12/2023]
Abstract
OBJECTIVE More than one third of acute ischemic stroke (AIS) patients do not recover to functional independence even if endovascular thrombectomy (EVT) is performed rapidly and successfully. This suggests that angiographic recanalization does not necessarily lead to tissue reperfusion. Although recognition of reperfusion status after EVT is pivotal for optimal postoperative management, reperfusion imaging assessment immediately after recanalization has not been fully investigated. The present study aimed to evaluate whether reperfusion status based on parenchymal blood volume (PBV) assessment after angiographic recanalization influences infarct growth and functional outcome in patients who have undergone EVT following AIS. METHODS Seventy-nine patients who underwent successful EVT for AIS were retrospectively analyzed. PBV maps were acquired from flat-panel detector computed tomography (CT) perfusion images before and after angiographic recanalization. Reperfusion status was assessed from PBV values and their changes in regions of interest and collateral score. RESULTS Post-EVT PBV ratio and ΔPBV ratio, as PBV parameters indicating the degree of reperfusion, were significantly lower in the unfavorable prognosis group (P < 0.01 each). Poor reperfusion on PBV mapping was associated with significantly longer puncture-to-recanalization time, lower collateral score, and higher frequency of infarct growth. Logistic regression analysis identified low collateral score and low ΔPBV ratio as associated with poor prognosis after EVT (odds ratios, 2.48, 3.72; 95% confidence intervals, 1.06-5.81, 1.20-11.53; P = 0.04, 0.02, respectively). CONCLUSIONS Poor reperfusion in severely hypoperfused territories on PBV mapping immediately after recanalization may predict infarct growth and unfavorable prognosis in patients who undergo EVT following AIS.
Collapse
Affiliation(s)
- Ichiro Nakagawa
- Department of Neurosurgery, Nara Medical University, Nara, Japan.
| | - Masashi Kotsugi
- Department of Neurosurgery, Nara Medical University, Nara, Japan
| | - Shohei Yokoyama
- Department of Neurosurgery, Nara Medical University, Nara, Japan
| | - Ryosuke Maeoka
- Department of Neurosurgery, Nara Medical University, Nara, Japan
| | | | - Ryosuke Matsuda
- Department of Neurosurgery, Nara Medical University, Nara, Japan
| | - Shuichi Yamada
- Department of Neurosurgery, Nara Medical University, Nara, Japan
| | - Hiroyuki Nakase
- Department of Neurosurgery, Nara Medical University, Nara, Japan
| |
Collapse
|
2
|
van der Zijden T, Mondelaers A, Loos C, Voormolen M, Franck C, Niekel M, Jardinet T, Van Thielen T, d'Archambeau O, Menovsky T, Parizel PM. Can angiographic Flat Detector Computed Tomography blood volume measurement be used to predict final infarct size in acute ischemic stroke? Eur J Radiol 2023; 158:110650. [PMID: 36549171 DOI: 10.1016/j.ejrad.2022.110650] [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: 06/24/2022] [Revised: 10/30/2022] [Accepted: 12/10/2022] [Indexed: 12/15/2022]
Abstract
INTRODUCTION AND PURPOSE Flat detector computed tomography (FD-CT) technology is becoming more widely available in the angiography suites of comprehensive stroke centers. In patients with acute ischemic stroke (AIS), who are referred for endovascular therapy (EVT), FD-CT generates cerebral pooled blood volume (PBV) maps, which might help in predicting the final infarct area. We retrospectively analyzed pre- and post-recanalization therapy quantitative PBV measurements in both the infarcted and hypoperfused brain areas of AIS patients referred for EVT. MATERIALS AND METHODS We included AIS patients with large vessel occlusion in the anterior circulation referred for EVT from primary stroke centers to our comprehensive stroke center. The pre- and post-recanalization FD-CT regional relative PBV (rPBV) values were measured between ipsilateral lesional and contralateral non-lesional areas based on final infarct area on post EVT follow-up cross-sectional imaging. Statistical analysis was performed to identify differences in PBV values between infarcted and non-infarcted, recanalized brain areas. RESULTS We included 20 AIS patients. Mean age was 63 years (ranging from 36 to 86 years). The mean pre- EVT rPBV value was 0.57 (±0.40) for infarcted areas and 0.75 (±0.43) for hypoperfusion areas. The mean differences (Δ) between pre- and post-EVT rPBV values for infarcted and hypoperfused areas were respectively 0.69 (±0.59) and 0.69 (±0.90). We found no significant differences (p > 0.05) between pre-EVT rPBV and ΔrPBV values of infarct areas and hypoperfusion areas. CONCLUSION Angiographic PBV mapping is useful for the detection of cerebral perfusion deficits, especially in combination with the fill run images. However, we were not able to distinguish irreversibly infarcted tissue from potentially salvageable, hypoperfused brain tissue based on quantitative PBV measurement in AIS patients.
Collapse
Affiliation(s)
- Thijs van der Zijden
- Department of Radiology, Antwerp University Hospital (UZA), 2650 Edegem, Belgium; Department of Medical Imaging, AZ KLINA, 2930 Brasschaat, Belgium.
| | - Annelies Mondelaers
- Department of Radiology, Antwerp University Hospital (UZA), 2650 Edegem, Belgium; Research Group mVision, Faculty of Medicine and Health Sciences, University of Antwerp (UA), 2610 Wilrijk, Belgium
| | - Caroline Loos
- Department of Neurology, Antwerp University Hospital (UZA), 2650 Edegem, Belgium; Research Group Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, (UA), 2610 Wilrijk, Belgium
| | - Maurits Voormolen
- Department of Radiology, Antwerp University Hospital (UZA), 2650 Edegem, Belgium; Research Group mVision, Faculty of Medicine and Health Sciences, University of Antwerp (UA), 2610 Wilrijk, Belgium
| | - Caro Franck
- Department of Radiology, Antwerp University Hospital (UZA), 2650 Edegem, Belgium; Research Group mVision, Faculty of Medicine and Health Sciences, University of Antwerp (UA), 2610 Wilrijk, Belgium
| | - Maarten Niekel
- Department of Radiology, Antwerp University Hospital (UZA), 2650 Edegem, Belgium
| | - Thomas Jardinet
- Department of Radiology, Antwerp University Hospital (UZA), 2650 Edegem, Belgium
| | - Thomas Van Thielen
- Department of Radiology, Antwerp University Hospital (UZA), 2650 Edegem, Belgium; Department of Medical Imaging, AZ KLINA, 2930 Brasschaat, Belgium
| | - Olivier d'Archambeau
- Department of Radiology, Antwerp University Hospital (UZA), 2650 Edegem, Belgium
| | - Tomas Menovsky
- Research Group Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, (UA), 2610 Wilrijk, Belgium; Department of Neurosurgery, Antwerp University Hospital (UZA), 2650 Edegem, Belgium
| | - Paul M Parizel
- Research Group mVision, Faculty of Medicine and Health Sciences, University of Antwerp (UA), 2610 Wilrijk, Belgium; Department of Radiology, Royal Perth Hospital and University of Western Australia Medical School, Perth, WA, Australia; Director, Western Australia National Imaging Facility (WA NIF) Node, Perth, WA, Australia
| |
Collapse
|
3
|
Flat Detector CT with Cerebral Pooled Blood Volume Perfusion in the Angiography Suite: From Diagnostics to Treatment Monitoring. Diagnostics (Basel) 2022; 12:diagnostics12081962. [PMID: 36010312 PMCID: PMC9406673 DOI: 10.3390/diagnostics12081962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/09/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
C-arm flat-panel detector computed tomographic (CT) imaging in the angiography suite increasingly plays an important part during interventional neuroradiological procedures. In addition to conventional angiographic imaging of blood vessels, flat detector CT (FD CT) imaging allows simultaneous 3D visualization of parenchymal and vascular structures of the brain. Next to imaging of anatomical structures, it is also possible to perform FD CT perfusion imaging of the brain by means of cerebral blood volume (CBV) or pooled blood volume (PBV) mapping during steady state contrast administration. This enables more adequate decision making during interventional neuroradiological procedures, based on real-time insights into brain perfusion on the spot, obviating time consuming and often difficult transportation of the (anesthetized) patient to conventional cross-sectional imaging modalities. In this paper we review the literature about the nature of FD CT PBV mapping in patients and demonstrate its current use for diagnosis and treatment monitoring in interventional neuroradiology.
Collapse
|
4
|
Potreck A, Falbesaner A, Seker F, Weyland CS, Mundiyanapurath S, Heiland S, Bendszus M, Pfaff JAR. Accuracy and reliability of PBV ASPECTS, CBV ASPECTS and NCCT ASPECTS in acute ischaemic stroke: a matched-pair analysis. Neuroradiol J 2021; 34:585-592. [PMID: 34014792 PMCID: PMC8649194 DOI: 10.1177/19714009211015771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND AND PURPOSE To investigate the reliability and accuracy of Alberta Stroke Program Early Computed Tomography Scores (ASPECTS) derived from flatpanel detector computed tomography pooled blood volume maps compared to non-contrast computed tomography and multidetector computed tomography perfusion cerebral blood volume maps. METHODS ASPECTS from pooled blood volume maps were evaluated retrospectively by two experienced readers for 37 consecutive patients with acute middle cerebral artery (MCA) M1 occlusion who underwent flatpanel detector computed tomography perfusion imaging before mechanical thrombectomy between November 2016 and February 2019. For comparison with ASPECTS from non-contrast computed tomography and cerebral blood volume maps, a matched-pair analysis according to pre-stroke modified Rankin scale, age, stroke severity, site of occlusion, time from stroke onset to imaging and final modified thrombolysis in cerebral infarction (mTICI) was performed in a separate group of patients who underwent multimodal computed tomography prior to mechanical thrombectomy between June 2015 and February 2019. Follow-up ASPECTS were derived from either non-contrast computed tomography or from magnetic resonance imaging (in seven patients) one day after mechanical thrombectomy. RESULTS Interrater agreement was best for non-contrast computed tomography ASPECTS (w-kappa = 0.74, vs. w-kappa = 0.63 for cerebral blood volume ASPECTS and w-kappa = 0.53 for pooled blood volume ASPECTS). Also, accuracy, defined as correlation between acute and follow-up ASPECTS, was best for non-contrast computed tomography ASPECTS (Spearman ρ = 0.86 (0.65-0.97), P < 0.001), while it was lower and comparable for pooled blood volume ASPECTS (ρ = 0.58 (0.32-0.79), P < 0.001) and cerebral blood volume ASPECTS (ρ = 0.52 (0.17-0.80), P = 0.001). It was noteworthy that cases of relevant infarct overestimation by two or more ASPECTS regions (compared to follow-up imaging) were observed for both acute pooled blood volume and cerebral blood volume ASPECTS but occurred more often for acute pooled blood volume ASPECTS (25% vs. 5%, P = 0.02). CONCLUSION Non-contrast computed tomography ASPECTS outperformed both pooled blood volume ASPECTS and cerebral blood volume ASPECTS in accuracy and reliability. Importantly, relevant infarct overestimation was observed more often in pooled blood volume ASPECTS than cerebral blood volume ASPECTS, limiting its present clinical applicability for acute stroke imaging.
Collapse
Affiliation(s)
- Arne Potreck
- Department of Neuroradiology,
University Hospital Heidelberg, Heidelberg, Germany
| | - Alina Falbesaner
- Department of Neuroradiology,
University Hospital Heidelberg, Heidelberg, Germany
| | - Fatih Seker
- Department of Neuroradiology,
University Hospital Heidelberg, Heidelberg, Germany
| | - Charlotte S Weyland
- Department of Neuroradiology,
University Hospital Heidelberg, Heidelberg, Germany
| | | | - Sabine Heiland
- Department of Neuroradiology,
University Hospital Heidelberg, Heidelberg, Germany
| | - Martin Bendszus
- Department of Neuroradiology,
University Hospital Heidelberg, Heidelberg, Germany
| | - Johannes AR Pfaff
- Department of Neuroradiology,
University Hospital Heidelberg, Heidelberg, Germany
- Department of Neuroradiology,
University Hospital Salzburg, Christian-Doppler-Klinik, Salzburg, Austria
| |
Collapse
|
5
|
Nozaki T, Noda M, Ishibashi T, Otani K, Kogiku M, Abe K, Kishi H, Morita A. Distal Vessel Imaging via Intra-arterial Flat Panel Detector CTA during Mechanical Thrombectomy. AJNR Am J Neuroradiol 2021; 42:306-312. [PMID: 33361373 DOI: 10.3174/ajnr.a6906] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 09/05/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Obtaining information on invisible vasculature distal to the occlusion site helps to deploy a stent retriever safely during mechanical thrombectomy for large-vessel occlusion. It is essential to reduce the amount of contrast used for detecting the vessels distal to the occlusion site because acute ischemic stroke patients tend to have chronic kidney disease and patients with severe chronic kidney disease are at an increased risk of contrast-associated acute kidney injury. We assessed whether vessels distal to the occlusion site during acute ischemic stroke with large-vessel occlusion could be visualized on angiographic images using flat panel detector CT acquired following intra-arterial diluted contrast injection, compared with MRA findings. MATERIALS AND METHODS Between May 2019 and January 2020, we enrolled 28 consecutive patients with large-vessel occlusions of the anterior circulation eligible for mechanical thrombectomy following MR imaging. The patients underwent CBV imaging using flat panel detector CT with an intra-arterial diluted contrast injection instead of intravenous injection. Flat panel detector CT angiographic images reconstructed from the same dataset were evaluated for image quality, collateral status of the MCA territory, and visualization of the vessels distal to the occlusion site. These findings were compared with MRA findings. RESULTS Twenty-two patients were retrospectively examined. Flat panel detector CT angiographic image quality in 20 patients (91%) was excellent or good. The distal portion of the occluded vessel segment was visualized in 14 patients (70%), while the proximal portion of the segment adjacent to the occluded vessel in 3 (15%) was visualized. No visualization was observed in only 1 patient (5%) with no collateral supply. Flat panel detector CT angiographic images were shown to evaluate vessels distal to the occlusion site more accurately than MRA. CONCLUSIONS In acute ischemic stroke with large-vessel occlusion, flat panel detector CT angiographic images could successfully visualize vessels distal to the occlusion site with a small amount of contrast material.
Collapse
Affiliation(s)
- T Nozaki
- From the Department of Neurosurgery (T.N., M.N., M.K., K.A., H.K.), Yokohama Shin-Midori General Hospital, Kanagawa, Japan
- Department of Neurological Surgery (T.N., A.M.), Nippon Medical School Hospital, Tokyo, Japan
| | - M Noda
- From the Department of Neurosurgery (T.N., M.N., M.K., K.A., H.K.), Yokohama Shin-Midori General Hospital, Kanagawa, Japan
| | - T Ishibashi
- Department of Neurosurgery (T.I.), Jikei University School of Medicine, Tokyo, Japan
| | - K Otani
- Siemens Healthcare K.K. (K.O.), Tokyo, Japan
| | - M Kogiku
- From the Department of Neurosurgery (T.N., M.N., M.K., K.A., H.K.), Yokohama Shin-Midori General Hospital, Kanagawa, Japan
| | - K Abe
- From the Department of Neurosurgery (T.N., M.N., M.K., K.A., H.K.), Yokohama Shin-Midori General Hospital, Kanagawa, Japan
| | - H Kishi
- From the Department of Neurosurgery (T.N., M.N., M.K., K.A., H.K.), Yokohama Shin-Midori General Hospital, Kanagawa, Japan
| | - A Morita
- Department of Neurological Surgery (T.N., A.M.), Nippon Medical School Hospital, Tokyo, Japan
| |
Collapse
|
6
|
Broocks G, Hanning U, Faizy TD, Scheibel A, Nawabi J, Schön G, Forkert ND, Langner S, Fiehler J, Gellißen S, Kemmling A. Ischemic lesion growth in acute stroke: Water uptake quantification distinguishes between edema and tissue infarct. J Cereb Blood Flow Metab 2020; 40:823-832. [PMID: 31072174 PMCID: PMC7168794 DOI: 10.1177/0271678x19848505] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 03/11/2019] [Accepted: 04/02/2019] [Indexed: 01/31/2023]
Abstract
Infarct growth from the early ischemic core to the total infarct lesion volume (LV) is often used as an outcome variable of treatment effects, but can be overestimated due to vasogenic edema. The purpose of this study was (1) to assess two components of early lesion growth by distinguishing between water uptake and true net infarct growth and (2) to investigate potential treatment effects on edema-corrected net lesion growth. Sixty-two M1-MCA-stroke patients with acute multimodal and follow-up CT (FCT) were included. Ischemic lesion growth was calculated by subtracting the initial CTP-derived ischemic core volume from the LV in the FCT. To determine edema-corrected net lesion growth, net water uptake of the ischemic lesion on FCT was quantified and subtracted from the volume of uncorrected lesion growth. The mean lesion growth without edema correction was 20.4 mL (95% CI: 8.2-32.5 mL). The mean net lesion growth after edema correction was 7.3 mL (95% CI: -2.1-16.7 mL; p < 0.0001). Lesion growth was significantly overestimated due to ischemic edema when determined in early-FCT imaging. In 18 patients, LV was lower than the initial ischemic core volume by CTP. These apparently "reversible" core lesions were more likely in patients with shorter times from symptom onset to imaging and higher recanalization rates.
Collapse
Affiliation(s)
- Gabriel Broocks
- Department of Diagnostic and Interventional
Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Uta Hanning
- Department of Diagnostic and Interventional
Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Tobias D Faizy
- Department of Diagnostic and Interventional
Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Alexandra Scheibel
- Department of Diagnostic and Interventional
Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jawed Nawabi
- Department of Diagnostic and Interventional
Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Gerhard Schön
- Institute of Medical Biometry and
Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Nils D Forkert
- Department of Radiology, Hotchkiss Brain
Institute, University of Calgary, Calgary, Canada
| | - Soenke Langner
- Department of Neuroradiology, University of
Rostock, Rostock, Germany
| | - Jens Fiehler
- Department of Diagnostic and Interventional
Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Susanne Gellißen
- Department of Diagnostic and Interventional
Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Andre Kemmling
- Department of Neuroradiology, University
Hospital Schleswig-Holstein, Luebeck, Germany
- Department of Neurology, University Hospital
Münster, Münster, Germany
| |
Collapse
|
7
|
Subacute Infarct Volume With Edema Correction in Computed Tomography Is Equivalent to Final Infarct Volume After Ischemic Stroke: Improving the Comparability of Infarct Imaging Endpoints in Clinical Trials. Invest Radiol 2019; 53:472-476. [PMID: 29668493 DOI: 10.1097/rli.0000000000000475] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES Final infarct volume is regularly used as an end point of tissue outcome in stroke trials; however, the reported volumes are most commonly derived from early follow-up imaging. Those volumes are significantly impaired by ischemic edema, which causes an overestimation of the true final lesion volume. As net water uptake within ischemic brain can be quantified densitometrically in computed tomography (CT) as recently described, we hypothesized that the final lesion volume can be better estimated by correcting the lesion volume in early follow-up for the corresponding proportion of edema. MATERIALS AND METHODS After retrospective consecutive screening of the local registry, 20 patients with acute middle cerebral artery large vessel occlusion met the inclusion criteria with early and late follow-up CT; the latter acquired at least 4 weeks after admission. In early follow-up imaging 24 hours after onset, the proportion of edema contributing to the infarct lesion was calculated by quantifying the total volume of ischemic net water uptake. Edema volume was then subtracted from the total lesion volume to obtain edema-corrected lesion volumes. Finally, these corrected lesion volumes were compared with the final lesion volume on late follow-up serving as ground truth. RESULTS The median lesion volume in the early follow-up was 115.1 mL (range, 21.9-539.9 mL) and significantly exceeded the median final lesion volume in the late follow-up CT, which was 86.6 mL (range, 11.2-399.0 mL; p < 0.001). The calculated mean proportion of edema within the early lesion volume was 25.8% (±5.9%; range, 11.1%-35.9%. The median edema-corrected lesion volume measured after 24 hours was 87.1 mL (range, 18.2-376.3 mL). The estimation of final lesion volume in the early follow-up CT was therefore improved by a mean of 31.4% (±2.1%) when correcting for the proportion of edema and did not differ significantly from the true final infarct volume (p = 0.2). CONCLUSIONS Edema-corrected volumes of early follow-up infarct lesion in CT were in close agreement with the actual final infarct volumes. Computed tomography-based edema correction of subacute infarct lesions improves the estimation of final tissue outcome. This could especially improve the comparability of imaging end points and facilitate patient recruitment in clinical trials.
Collapse
|
8
|
Broocks G, Rajput F, Hanning U, Faizy TD, Leischner H, Schön G, Gellißen S, Sporns P, Deb-Chatterji M, Thomalla G, Kemmling A, Fiehler J, Flottmann F. Highest Lesion Growth Rates in Patients With Hyperacute Stroke: When Time Is Brain Particularly Matters. Stroke 2019; 50:189-192. [PMID: 30580711 DOI: 10.1161/strokeaha.118.023457] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background and Purpose- The early growth of ischemic lesions has been described as being nonlinear, with lesion growth rates at their highest during the earliest period after stroke onset. We hypothesized that the time gap from imaging to revascularization results in higher lesion growth in patients with hyperacute presentation. Methods- Fifty-one patients with ischemic stroke with initial multimodal computed tomography (CT), follow-up CT after 24 hours, and successful endovascular recanalization were included and separated into 2 groups according to their median time from symptom onset to imaging (eg, hyperacute versus acute). The difference in Alberta Stroke Program Early CT Score (ASPECTS) between initial CT and follow-up CT was assessed, as well as volumetric lesion growth from early ischemic core in admission perfusion CT and total lesion volume in follow-up CT. Results- The median time from onset to imaging was 1.85 hours. There was no significant difference in admission ASPECTS (mean, 8.5 versus 8.2) or time from imaging to recanalization in both groups (median, 2.7 versus 2.4 hours; P=0.4). The mean (SD) lesion growth assessed by ASPECTS difference was 2.7 (2.3) in the hyperacute group and 1.6 (1.3) in the acute group (P=0.03). The mean (SD) volumetric difference in the hyperacute group was 26.6 mL (43.2 mL) and 17.2 mL (26.3 mL; P=0.36) in the acute group, respectively. For every passing hour after onset, ASPECTS lesion growth was reduced by 0.4. Conclusions- Patients in the hyperacute phase showed increased ASPECTS lesion growth from imaging to recanalization suggesting a particular benefit of faster recanalization times in this group of patients with stroke.
Collapse
Affiliation(s)
- Gabriel Broocks
- From the Department of Diagnostic and Interventional Neuroradiology (G.B., F.R., U.H., T.D.F., H.L., S.G., J.F., F.F.), University Medical Center Hamburg-Eppendorf, Germany
| | - Furqan Rajput
- From the Department of Diagnostic and Interventional Neuroradiology (G.B., F.R., U.H., T.D.F., H.L., S.G., J.F., F.F.), University Medical Center Hamburg-Eppendorf, Germany
| | - Uta Hanning
- From the Department of Diagnostic and Interventional Neuroradiology (G.B., F.R., U.H., T.D.F., H.L., S.G., J.F., F.F.), University Medical Center Hamburg-Eppendorf, Germany
| | - Tobias Djamsched Faizy
- From the Department of Diagnostic and Interventional Neuroradiology (G.B., F.R., U.H., T.D.F., H.L., S.G., J.F., F.F.), University Medical Center Hamburg-Eppendorf, Germany
| | - Hannes Leischner
- From the Department of Diagnostic and Interventional Neuroradiology (G.B., F.R., U.H., T.D.F., H.L., S.G., J.F., F.F.), University Medical Center Hamburg-Eppendorf, Germany
| | - Gerhard Schön
- Institute of Medical Biometry and Epidemiology (G.S.), University Medical Center Hamburg-Eppendorf, Germany
| | - Susanne Gellißen
- From the Department of Diagnostic and Interventional Neuroradiology (G.B., F.R., U.H., T.D.F., H.L., S.G., J.F., F.F.), University Medical Center Hamburg-Eppendorf, Germany
| | - Peter Sporns
- Department of Clinical Radiology, University Hospital Münster, Germany (P.S., A.K.)
| | - Milani Deb-Chatterji
- Department of Neurology (M.D.-C., G.T.), University Medical Center Hamburg-Eppendorf, Germany
| | - Götz Thomalla
- Department of Neurology (M.D.-C., G.T.), University Medical Center Hamburg-Eppendorf, Germany
| | - Andre Kemmling
- Department of Clinical Radiology, University Hospital Münster, Germany (P.S., A.K.)
| | - Jens Fiehler
- From the Department of Diagnostic and Interventional Neuroradiology (G.B., F.R., U.H., T.D.F., H.L., S.G., J.F., F.F.), University Medical Center Hamburg-Eppendorf, Germany
| | - Fabian Flottmann
- From the Department of Diagnostic and Interventional Neuroradiology (G.B., F.R., U.H., T.D.F., H.L., S.G., J.F., F.F.), University Medical Center Hamburg-Eppendorf, Germany
| |
Collapse
|
9
|
Lanfermann H, de Rochemont RD, Berkefeld J. Prof. Dr. F. E. Zanella—A Training and Development Mentor in Neuroradiology. Clin Neuroradiol 2017; 27:405-407. [DOI: 10.1007/s00062-017-0643-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|