Evidence map›Paper›PMID 33389034›Full record

ArticleEuropean radiology2021

Comparison of various reconstructions derived from dual-energy CT immediately after endovascular treatment of acute ischemic stroke in predicting hemorrhage.

Jinsong Cai, Ying Zhou, Yuqi Zhao, Chao Xu, Shenqiang Yan, Xinfa Ding, Min Lou

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In one paragraph

Article in European radiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 4 pooled it
1.3field-weighted citation impact, top 23% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 4 syntheses or guidelines pooled it, 20 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Jinsong CaiDepartment of Radiology, The Second Affiliated Hospital of Zhejiang University, School of Medicine, 88# Jiefang Road, 310009, Hangzhou, China.
Ying ZhouDepartment of Neurology, The Second Affiliated Hospital of Zhejiang University, School of Medicine, 88# Jiefang Road, Hangzhou, 310009, China.
Yuqi ZhaoDepartment of Neurology, The Second Affiliated Hospital of Zhejiang University, School of Medicine, 88# Jiefang Road, Hangzhou, 310009, China.
Chao XuDepartment of Neurology, The Second Affiliated Hospital of Zhejiang University, School of Medicine, 88# Jiefang Road, Hangzhou, 310009, China.
Shenqiang YanDepartment of Neurology, The Second Affiliated Hospital of Zhejiang University, School of Medicine, 88# Jiefang Road, Hangzhou, 310009, China.
Xinfa DingDepartment of Radiology, The Second Affiliated Hospital of Zhejiang University, School of Medicine, 88# Jiefang Road, 310009, Hangzhou, China.
Min LouDepartment of Neurology, The Second Affiliated Hospital of Zhejiang University, School of Medicine, 88# Jiefang Road, Hangzhou, 310009, China. lm99@zju.edu.cn.ORCID http://orcid.org/0000-0002-6627-064X
Second Affiliated Hospital of Zhejiang University · CN

Funding

National Natural Science Foundation of China 81971101Science Technology Department of Zhejiang Province 2018C04011
6 · The paper itself

Abstract

objectivesPredicting 24-h hemorrhage immediately after endovascular treatment (EVT) of ischemic stroke is important but difficult for clinicians. We thus aimed to identify better image markers in predicting hemorrhage from different reconstructions derived from dual-energy CT.

methodsWe reviewed our prospectively collected database for anterior circulation ischemic stroke patients who received EVT and analyzed patients who underwent dual-energy CT immediately after EVT. Parenchymal hyperdensities were assessed on non-contrast CT and virtual non-contrast (VNC) which was constructed from dual-energy CT, respectively. Metallic hyperdensity sign was defined when a maximum density > 90 Hounsfield units was identified within the nonpetechial intracerebral hyperdense lesion in the basal ganglia on non-contrast CT.

resultsA total of 147 patients were included. Hemorrhagic transformation (HT) was identified in 81 (55.1%) patients, and parenchymal hemorrhage (PH) in 35 (23.8%) patients. The rate of HT at 24 h was higher in patients with parenchymal hyperdensities on non-contrast CT or VNC or with metallic hyperdensity sign than those without (72.4% vs 11.9%, p < 0.001; 82.0% vs 41.2%, p < 0.001; 100.0% vs 44.5%, p < 0.001). Parenchymal hyperdensities on non-contrast CT had a higher accuracy in predicting HT than those on VNC (76.9% vs 66.7%). Metallic hyperdensity sign on non-contrast CT also had a higher accuracy in predicting PH than parenchymal hyperdensities on VNC (88.4% vs 69.4%).

conclusionsImage markers on non-contrast CT (parenchymal hyperdensities and metallic hyperdensity sign) performed immediately post-EVT of ischemic stroke might be not inferior to dual-energy CT (parenchymal hyperdensities) to predict follow-up hemorrhage. KEY POINTS: • Image markers (parenchymal hyperdensities and metallic hyperdensity sign) on NCCT performed immediately post-EVT of ischemic stroke can predict follow-up hemorrhage. • Metallic hyperdensity sign on NCCT can accurately predict parenchymal hemorrhage. • Parenchymal hyperdensities on NCCT can accurately predict hemorrhagic transformation.

Indexed as

Brain IschemiaEndovascular ProceduresIschemic StrokeStrokeCerebral HemorrhageHumansRetrospective StudiesTomography, X-Ray ComputedEndovascular proceduresHemorrhageStroke

Identifiers

PMID33389034
OpenAlexW3118989783

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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.