ArticleJournal of clinical medicine2021
Hypoperfusion Index Ratio as a Surrogate of Collateral Scoring on CT Angiogram in Large Vessel Stroke.
Article in Journal of clinical medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed, 33 citations in OpenAlex.
- Hypoperfusion Intensity Ratio as an Independent Predictor of Functional Outcome After Mechanical Thrombectomy for Large Vessel Occlusion Stroke.Medicina (Kaunas, Lithuania) · 2026Article
- Quantitative venous outflow profiles based on four-dimensional computed tomography angiography are associated with tissue level collaterals and clinical outcomes of acute ischemic stroke patients.Quantitative imaging in medicine and surgery · 2026Article
- Predicting severe disability or death in endovascular thrombectomy with large computed tomography perfusion core infarction and limited penumbra.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2026Article
- Association of Computed Tomography Perfusion Parameters with 90-Day Functional Independence After Endovascular Thrombectomy.Journal of clinical medicine · 2025Article
- On old dogs and new tricks: CT perfusion predicts hemorrhagic transformation after thrombectomy.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2025Article
- Real-world functional outcomes and predictors of futile recanalization in patients meeting criteria for SELECT2.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2025Article
- Role of Hypoperfusion Intensity Ratio in Vessel Occlusions: A Review on Safety and Clinical Outcomes.AJNR. American journal of neuroradiology · 2025Review
- Validation of the Charlotte large artery occlusion endovascular therapy outcome score using Viz.ai-derived cerebral blood volume index.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2025Article
- Clinical study of colorViz fusion image vascular grading based on multi-phase CTA reconstruction in acute ischemic stroke.BMC medical imaging · 2025Article
- Perfusion patterns as a tool for emergency stroke diagnosis: differentiating proximal and distal MCA occlusions.BMJ neurology open · 2025Article
- Development and validation of an interpretable machine learning model to predict malignant cerebral edema after endovascular treatment in acute anterior circulation large vessel occlusion stroke.Frontiers in neurology · 2025Article
- Radiomics-Based Prediction of Collateral Status from CT Angiography of Patients Following a Large Vessel Occlusion Stroke.Diagnostics (Basel, Switzerland) · 2024Article
- Larger ischemic cores and poor collaterals among large vessel occlusions presenting in the late evening.Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association · 2023Article
- The Compensation Index Is Better Associated with DSA ASITN Collateral Score Compared to the Cerebral Blood Volume Index and Hypoperfusion Intensity Ratio.Journal of clinical medicine · 2023Article
- Perfusion Collateral Index versus Hypoperfusion Intensity Ratio in Assessment of Collaterals in Patients with Acute Ischemic Stroke.AJNR. American journal of neuroradiology · 2023Article
- Elevated Hypoperfusion Intensity Ratio (HIR) observed in patients with a large vessel occlusion (LVO) presenting in the evening.Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association · 2023Observational
- Thrombectomy Outcomes With General vs Nongeneral Anesthesia: A Pooled Patient-Level Analysis From the EXTEND-IA Trials and SELECT Study.Neurology · 2023Article
- Baseline Characteristics Associated with Good Collateral Status Using Hypoperfusion Index as an Outcome.Tomography (Ann Arbor, Mich.) · 2022Article
- RAPID CT Perfusion-Based Relative CBF Identifies Good Collateral Status Better Than Hypoperfusion Intensity Ratio, CBV-Index, and Time-to-Maximum in Anterior Circulation Stroke.AJNR. American journal of neuroradiology · 2022Article
- Prognostic Accuracy of CTP Summary Maps in Patients with Large Vessel Occlusive Stroke and Poor Revascularization after Mechanical Thrombectomy-Comparison of Three Automated Perfusion Software Applications.Tomography (Ann Arbor, Mich.) · 2022Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
backgroundThis study was to evaluate the correlation of the hypoperfusion intensity ratio (HIR) with the collateral score from multiphase computed tomography angiography (mCTA) among patients with large vessel stroke.
methodFrom February 2019 to May 2020, we retrospectively reviewed the patients with large vessel strokes (intracranial carotid artery or proximal middle cerebral artery occlusion). HIR was defined as a Tmax > 10 s lesion volume divided by a Tmax > 6 s lesion volume, which was calculated by automatic software (Syngo.via, Siemens). The correlation between the HIR and mCTA score was evaluated by Pearson's correlation. The cutoff value predicting the mCTA score was evaluated by receiver operating characteristic analysis.
resultNinety-four patients were enrolled in the final analysis. The patients with good collaterals had a smaller core volume (37.3 ± 24.7 vs. 116.5 ± 70 mL,
conclusionHIR is a good surrogate of collateral circulation in patients with acute large artery occlusion.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.