ArticleJournal of computer assisted tomography
Collateral Status in Ischemic Stroke: A Comparison of Computed Tomography Angiography, Computed Tomography Perfusion, and Digital Subtraction Angiography.
Article in Journal of computer assisted tomography. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed, 33 citations in OpenAlex.
- Time Since Stroke Onset, Quantitative Collateral Score, and Functional Outcome After Endovascular Treatment for Acute Ischemic Stroke.Neurology · 2022Trial
- Endovascular treatment and clinical outcomes in minor ischemic stroke due to large-vessel disease: a retrospective study.Frontiers in neuroscience · 2026Article
- Development and validation of a prognostic nomogram incorporating automated collateral score and computed tomography perfusion parameters for patients with acute ischemic stroke undergoing endovascular thrombectomy.Quantitative imaging in medicine and surgery · 2025Article
- Assessment of collaterals on multiphase CTA in stroke patients with a large vessel occlusion: an interrater and intrarater agreement study.Neuroradiology · 2025Article
- MRI-based Quantitative Collateral Assessment in Acute Stroke : A Comparison with Single-phase CTA in Drip-and-ship Patients with Serial Imaging.Clinical neuroradiology · 2025Article
- Multi-phase CT-Angiography outperforms angiographic careggi collateral score and predicts functional outcome in acute ischemic stroke.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025Article
- Pretreatment CTP Collateral Parameters Predict Good Outcomes in Successfully Recanalized Middle Cerebral Artery Distal Medium Vessel Occlusions.Clinical neuroradiology · 2024Article
- Perfusion Collateral Index versus Hypoperfusion Intensity Ratio in Assessment of Collaterals in Patients with Acute Ischemic Stroke.AJNR. American journal of neuroradiology · 2023Article
- Computational modeling of multiscale collateral blood supply in a whole-brain-scale arterial network.PLoS computational biology · 2023Article
- Inter-Rater Reliability of Collateral Status Assessment Based on CT Angiography: A Retrospective Study of Middle Cerebral Artery Ischaemic Stroke.Journal of clinical medicine · 2023Article
- Pivotal role of multiphase computed tomography angiography for collateral assessment in patients with acute ischemic stroke.La Radiologia medica · 2023Review
- Automated LVO detection and collateral scoring on CTA using a 3D self-configuring object detection network: a multi-center study.Scientific reports · 2023Article
- Collateral Circulation in Ischemic Stroke: An Updated Review.Journal of stroke · 2023Review
- A Short Review on Advances in Early Diagnosis and Treatment of Ischemic Stroke.Galen medical journal · 2023Review
- A deep learning approach to predict collateral flow in stroke patients using radiomic features from perfusion images.Frontiers in neurology · 2023Article
- Value of CT Perfusion for Collateral Status Assessment in Patients with Acute Ischemic Stroke.Diagnostics (Basel, Switzerland) · 2022Article
- Inter-rater reliability for assessing intracranial collaterals in patients with acute ischemic stroke: comparing 29 raters and an artificial intelligence-based software.Neuroradiology · 2022Article
- Correlation of Collateral Scores Derived from Whole-Brain Time-Resolved Flat Panel Detector Imaging in Acute Ischemic Stroke.AJNR. American journal of neuroradiology · 2022Article
- MR Angiography in Assessment of Collaterals in Patients with Acute Ischemic Stroke: A Comparative Analysis with Digital Subtraction Angiography.Brain sciences · 2022Article
- Evaluation of T2-FLAIR combined with ASL on the collateral circulation of acute ischemic stroke.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2022Article
Corrections and comments
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Authors and funding
11 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo compare assessment of collaterals by single-phase computed tomography (CT) angiography (CTA) and CT perfusion-derived 3-phase CTA, multiphase CTA and temporal maximum-intensity projection (tMIP) images to digital subtraction angiography (DSA), and relate collateral assessments to clinical outcome in patients with acute ischemic stroke.
methodsConsecutive acute ischemic stroke patients who underwent CT perfusion, CTA, and DSA before thrombectomy with occlusion of the internal carotid artery, the M1 or the M2 segments were included. Two observers assessed all CT images and one separate observer assessed DSA (reference standard) with static and dynamic (modified American Society of Interventional and Therapeutic Neuroradiology) collateral grading methods. Interobserver agreement and concordance were quantified with Cohen-weighted κ and concordance correlation coefficient, respectively. Imaging assessments were related to clinical outcome (modified Rankin Scale, ≤ 2).
resultsInterobserver agreement (n = 101) was 0.46 (tMIP), 0.58 (3-phase CTA), 0.67 (multiphase CTA), and 0.69 (single-phase CTA) for static assessments and 0.52 (3-phase CTA) and 0.54 (multiphase CTA) for dynamic assessments. Concordance correlation coefficient (n = 80) was 0.08 (3-phase CTA), 0.09 (single-phase CTA), and 0.23 (multiphase CTA) for static assessments and 0.10 (3-phase CTA) and 0.27 (multiphase CTA) for dynamic assessments. Higher static collateral scores on multiphase CTA (odds ratio [OR], 1.7; 95% confidence interval [CI], 1.1-2.7) and tMIP images (OR, 2.0; 95% CI, 1.1-3.4) were associated with modified Rankin Scale of 2 or less as were higher modified American Society of Interventional and Therapeutic Neuroradiology scores on 3-phase CTA (OR, 1.5; 95% CI, 1.1-2.2) and multiphase CTA (OR, 1.7; 95% CI, 1.1-2.6).
conclusionsConcordance between assessments on CT and DSA was poor. Collateral status evaluated on 3-phase CTA and multiphase CTA, but not on DSA, was associated with clinical outcome.
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