Evidence map›Paper›PMID 31619150›Full record

Observational studyStroke2019

Contralateral Hemispheric Cerebral Blood Flow Measured With Arterial Spin Labeling Can Predict Outcome in Acute Stroke.

Thoralf Thamm, Jia Guo, Jarrett Rosenberg, Tie Liang, Michael P Marks, Soren Christensen, Huy M Do, Stephanie M Kemp, Emma Adair, Irina Eyngorn and 7 more

Abstract readMulticenter StudyObservational Study
In one paragraph

Observational study in Stroke, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

27 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Article
  5. Contralateral hemispheric cerebral blood flow can predict short-term clinical outcomes in patients with recent small subcortical infarcts.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
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  14. Recent advances in arterial spin labeling perfusion MRI in patients with vascular cognitive impairment.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2023
    Review
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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

17 authors.

Thoralf ThammFrom the Department of Radiology, Stanford University, CA (T.T., J.G., J.R., T.L., M.P.M., H.M.D., G.Z.).
Jia GuoFrom the Department of Radiology, Stanford University, CA (T.T., J.G., J.R., T.L., M.P.M., H.M.D., G.Z.).
Jarrett RosenbergFrom the Department of Radiology, Stanford University, CA (T.T., J.G., J.R., T.L., M.P.M., H.M.D., G.Z.).
Tie LiangFrom the Department of Radiology, Stanford University, CA (T.T., J.G., J.R., T.L., M.P.M., H.M.D., G.Z.).
Michael P MarksFrom the Department of Radiology, Stanford University, CA (T.T., J.G., J.R., T.L., M.P.M., H.M.D., G.Z.).
Soren ChristensenDepartment of Neurology and Neurological Sciences, Stanford Stroke Center, Stanford University, CA (S.C., S.M.K., E.A., I.E., M.M., M.G.L., G.W.A.).
Huy M DoFrom the Department of Radiology, Stanford University, CA (T.T., J.G., J.R., T.L., M.P.M., H.M.D., G.Z.).
Stephanie M KempDepartment of Neurology and Neurological Sciences, Stanford Stroke Center, Stanford University, CA (S.C., S.M.K., E.A., I.E., M.M., M.G.L., G.W.A.).
Emma AdairDepartment of Neurology and Neurological Sciences, Stanford Stroke Center, Stanford University, CA (S.C., S.M.K., E.A., I.E., M.M., M.G.L., G.W.A.).
Irina EyngornDepartment of Neurology and Neurological Sciences, Stanford Stroke Center, Stanford University, CA (S.C., S.M.K., E.A., I.E., M.M., M.G.L., G.W.A.).
Michael MlynashDepartment of Neurology and Neurological Sciences, Stanford Stroke Center, Stanford University, CA (S.C., S.M.K., E.A., I.E., M.M., M.G.L., G.W.A.).
Tudor G JovinDepartment of Neurology, Cooper Neurological Institute, Cooper University Hospital, Camden, NJ (T.G.J.).
Bart P KeoghDepartment of Radiology, Swedish Neuroscience Institute, Swedish Medical Center, Seattle, WA (B.P.K.).
Hui J ChenDepartment of Radiology, Eden Medical Center, Castro Valley, CA (H.J.C.).
Maarten G LansbergDepartment of Neurology and Neurological Sciences, Stanford Stroke Center, Stanford University, CA (S.C., S.M.K., E.A., I.E., M.M., M.G.L., G.W.A.).
Gregory W AlbersDepartment of Neurology and Neurological Sciences, Stanford Stroke Center, Stanford University, CA (S.C., S.M.K., E.A., I.E., M.M., M.G.L., G.W.A.).
Greg ZaharchukFrom the Department of Radiology, Stanford University, CA (T.T., J.G., J.R., T.L., M.P.M., H.M.D., G.Z.).

Funding

Quantifying Collateral Perfusion in Cerebrovascular DiseaseR01NS066506 · NINDS · STANFORD UNIVERSITY · PI ZAHARCHUK, GREGORY GEORGE · 2009 to 2017
$4.9M
NINDS NIH HHS R01 NS066506
6 · The paper itself

Abstract

Background and Purpose- Imaging is frequently used to select acute stroke patients for intra-arterial therapy. Quantitative cerebral blood flow can be measured noninvasively with arterial spin labeling magnetic resonance imaging. Cerebral blood flow levels in the contralateral (unaffected) hemisphere may affect capacity for collateral flow and patient outcome. The goal of this study was to determine whether higher contralateral cerebral blood flow (cCBF) in acute stroke identifies patients with better 90-day functional outcome. Methods- Patients were part of the prospective, multicenter iCAS study (Imaging Collaterals in Acute Stroke) between 2013 and 2017. Consecutive patients were enrolled after being diagnosed with anterior circulation acute ischemic stroke. Inclusion criteria were ischemic anterior circulation stroke, baseline National Institutes of Health Stroke Scale score ≥1, prestroke modified Rankin Scale score ≤2, onset-to-imaging time <24 hours, with imaging including diffusion-weighted imaging and arterial spin labeling. Patients were dichotomized into high and low cCBF groups based on median cCBF. Outcomes were assessed by day-1 and day-5 National Institutes of Health Stroke Scale; and day-30 and day-90 modified Rankin Scale. Multivariable logistic regression was used to test whether cCBF predicted good neurological outcome (modified Rankin Scale score, 0-2) at 90 days. Results- Seventy-seven patients (41 women) met the inclusion criteria with median (interquartile range) age of 66 (55-76) yrs, onset-to-imaging time of 4.8 (3.6-7.7) hours, and baseline National Institutes of Health Stroke Scale score of 13 (9-20). Median cCBF was 38.9 (31.2-44.5) mL per 100 g/min. Higher cCBF predicted good outcome at day 90 (odds ratio, 4.6 [95% CI, 1.4-14.7];

Indexed as

AgedBrainBrain IschemiaCerebrovascular CirculationFemaleHumansMagnetic Resonance ImagingMaleMiddle AgedNeuroimagingProspective StudiesStrokeTreatment Outcomecerebrovascular circulationmagnetic resonance imagingperfusion imagingprognosisprospective studiesstroke

Identifiers

PMID31619150
PMCPMC7041883

What OpenQuestion holds

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Registered trials

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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.