Evidence map›Paper›PMID 36300659›Full record

SynthesisEpilepsia2023

Reliability of visual review of intracranial electroencephalogram in identifying the seizure onset zone: A systematic review and implications for the accuracy of automated methods.

James Flanary, Samuel R Daly, Caitlin Bakker, Alexander B Herman, Michael C Park, Robert McGovern, Thaddeus Walczak, Thomas Henry, Theoden I Netoff, David P Darrow

Abstract readSystematic Review
In one paragraph

Synthesis in Epilepsia, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

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

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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

10 authors.

James FlanaryDepartment of Surgery Walter Reed National Military Medical Center Bethesda Maryland USA.ORCID https://orcid.org/0000-0001-8206-0469
Samuel R DalyDepartment of Neurosurgery Baylor Scott and White Health Temple Texas USA.ORCID https://orcid.org/0000-0002-3652-491X
Caitlin BakkerDr John Archer Library University of Regina Regina Saskatchewan Canada.ORCID https://orcid.org/0000-0003-4154-8382
Alexander B HermanDepartment of Psychiatry University of Minnesota Minneapolis Minnesota USA.
Michael C ParkDepartment of Neurosurgery University of Minnesota Minneapolis Minnesota USA.
Robert McGovernDepartment of Neurosurgery University of Minnesota Minneapolis Minnesota USA.ORCID https://orcid.org/0000-0003-0752-1899
Thaddeus WalczakDepartment of Neurology University of Minnesota Minneapolis Minnesota USA.
Thomas HenryDepartment of Neurology University of Minnesota Minneapolis Minnesota USA.
Theoden I NetoffDepartment of Biomedical Engineering University of Minnesota Minneapolis Minnesota USA.
David P DarrowDepartment of Neurosurgery University of Minnesota Minneapolis Minnesota USA.ORCID https://orcid.org/0000-0001-9335-0584

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Visual review of intracranial electroencephalography (iEEG) is often an essential component for defining the zone of resection for epilepsy surgery. Unsupervised approaches using machine and deep learning are being employed to identify seizure onset zones (SOZs). This prompts a more comprehensive understanding of the reliability of visual review as a reference standard. We sought to summarize existing evidence on the reliability of visual review of iEEG in defining the SOZ for patients undergoing surgical workup and understand its implications for algorithm accuracy for SOZ prediction. We performed a systematic literature review on the reliability of determining the SOZ by visual inspection of iEEG in accordance with best practices. Searches included MEDLINE, Embase, Cochrane Library, and Web of Science on May 8, 2022. We included studies with a quantitative reliability assessment within or between observers. Risk of bias assessment was performed with QUADAS-2. A model was developed to estimate the effect of Cohen kappa on the maximum possible accuracy for any algorithm detecting the SOZ. Two thousand three hundred thirty-eight articles were identified and evaluated, of which one met inclusion criteria. This study assessed reliability between two reviewers for 10 patients with temporal lobe epilepsy and found a kappa of .80. These limited data were used to model the maximum accuracy of automated methods. For a hypothetical algorithm that is 100% accurate to the ground truth, the maximum accuracy modeled with a Cohen kappa of .8 ranged from .60 to .85 (F-2). The reliability of reviewing iEEG to localize the SOZ has been evaluated only in a small sample of patients with methodologic limitations. The ability of any algorithm to estimate the SOZ is notably limited by the reliability of iEEG interpretation. We acknowledge practical limitations of rigorous reliability analysis, and we propose design characteristics and study questions to further investigate reliability.

Indexed as

Epilepsy, Temporal LobeSeizuresElectrocorticographyElectroencephalographyHumansReproducibility of Resultselectrocorticographyintracranial electroencephalographyreliabilityseizure onset zonestereoencephalography

Identifiers

PMID36300659
PMCPMC10099245

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

None linked

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.