Evidence map›Paper›PMID 17082470›Full record

ArticleStroke2006

Intra- and interrater reliability of ischemic lesion volume measurements on diffusion-weighted, mean transit time and fluid-attenuated inversion recovery MRI.

Marie Luby, Julie L Bykowski, Peter D Schellinger, José G Merino, Steven Warach

Erratum issuedAbstract readComparative StudyValidation Study
In one paragraph

Article in Stroke, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 44 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 1 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

44 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Hypoperfusion intensity ratio is associated with follow-up infarct volume in medium vessel occlusions: A multicenter multinational study.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Tissue outcome prediction in hyperacute ischemic stroke: Comparison of machine learning models.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2021
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. An MRI Hyperintense Acute Reperfusion Marker Is Related to Elevated Peripheral Monocyte Count in Acute Ischemic Stroke.Journal of neuroimaging : official journal of the American Society of Neuroimaging · 2018
    Article
  17. Article
  18. Review
  19. A benchmarking tool to evaluate computer tomography perfusion infarct core predictions against a DWI standard.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2016
    Article
  20. Magnetic Resonance Imaging in Acute Ischemic Stroke Patients with Mild Symptoms: An Opportunity to Standardize Intravenous Thrombolysis.Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association · 2015
    Article
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

5 authors.

Marie LubySection on Stroke Diagnostics and Therapeutics, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 10 Center Drive, Rm. B1D733, MSC 1063, Bethesda, MD 20892, USA. lubym@ninds.nih.gov
Julie L Bykowski
Peter D Schellinger
José G Merino
Steven Warach

Funding

DEVELOPING INNOVATIVE STROKE TRIAL DESIGNSZ01NS003046 · NINDS · NEUROLOGICAL DISORDERS AND STROKE · PI WARACH, STEVEN JAY · 2007 to 2008
$947k
Section on Stroke Diagnostics and TherapeuticsZ01NS002975 · NINDS · NEUROLOGICAL DISORDERS AND STROKE · PI WARACH, STEVEN JAY · 1999 to 2005
–
Intramural NIH HHS Z99 NS999999
6 · The paper itself

Abstract

background and purposeWe investigated the intra- and interrater reliability of ischemic lesion volumes measurements assessed by different MRI sequences at various times from onset.

methodsIschemic lesion volumes were measured for intrarater reliability using diffusion-weighted (DWI), mean transit time (MTT) perfusion and fluid-attenuated inversion recovery (FLAIR) MRI at chronic (>3 days from stroke onset) time points. A single intrarater reader, blind to clinical information and time point, repeated the volume measurements on two occasions separated by at least 1 week. Interrater reliability was also obtained in the second set of patients using acute DWI, MTT and chronic FLAIR MRI. Four blinded readers performed these volume measurements. Average deviations across repeat measurements per lesion and differences between sample means between the two measurements were calculated globally, ie, across all sequences and time points, and per reader type for each sequence at each time point.

resultsThere was good concordance of the mean sample volumes of the 2 intrarater readings (deviations were <4% and 2 mL globally, <2% and 2 mL for DWI, <6% and 7 mL for MTT, and <2% and 1 mL for FLAIR). There was also good concordance of the interrater readings (<5% and 2 mL globally).

conclusionsRepeat measurements of stroke lesion volumes show excellent intra- and interrater concordance for DWI, MTT and FLAIR at acute through chronic time points.

Indexed as

Brain IschemiaDiffusion Magnetic Resonance ImagingHumansImage Processing, Computer-AssistedProspective StudiesTime Factors

Identifiers

PMID17082470
PMCPMC4768911

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.