Evidence map›Paper›PMID 35699347›Full record

ArticleNeurogastroenterology and motility2022

An automated artifact detection and rejection system for body surface gastric mapping.

Stefan Calder, Gabriel Schamberg, Chris Varghese, Stephen Waite, Gabrielle Sebaratnam, Jonathan S T Woodhead, Peng Du, Christopher N Andrews, Greg O'Grady, Armen A Gharibans

Open access · hybridAbstract read
In one paragraph

Article in Neurogastroenterology and motility, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 2 pooled it
5.1field-weighted citation impact, top 3% 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

25 citing papers in PubMed, 2 syntheses or guidelines pooled it, 51 citations in OpenAlex.

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  16. Effect of menstrual cycle and menopause on human gastric electrophysiology.American journal of physiology. Gastrointestinal and liver physiology · 2024
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  19. Gastric AlimetryJournal of clinical medicine · 2023
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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 at 2 institutions in 2 countries.

Stefan CalderAlimetry Ltd, Auckland, New Zealand.
Gabriel SchambergAlimetry Ltd, Auckland, New Zealand.
Chris VargheseDepartment of Surgery, The University of Auckland, Auckland, New Zealand.ORCID 0000-0001-7369-8639
Stephen WaiteAlimetry Ltd, Auckland, New Zealand.
Gabrielle SebaratnamAlimetry Ltd, Auckland, New Zealand.
Jonathan S T WoodheadAlimetry Ltd, Auckland, New Zealand.
Peng DuAuckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand.ORCID 0000-0002-6913-7545
Christopher N AndrewsAlimetry Ltd, Auckland, New Zealand.
Greg O'GradyAlimetry Ltd, Auckland, New Zealand.
Armen A GharibansAlimetry Ltd, Auckland, New Zealand.
Auckland Institute of Studies · NZUniversity of Auckland · NZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBody surface gastric mapping (BSGM) is a new clinical tool for gastric motility diagnostics, providing high-resolution data on gastric myoelectrical activity. Artifact contamination was a key challenge to reliable test interpretation in traditional electrogastrography. This study aimed to introduce and validate an automated artifact detection and rejection system for clinical BSGM applications.

methodsTen patients with chronic gastric symptoms generated a variety of artifacts according to a standardized protocol (176 recordings) using a commercial BSGM system (Alimetry, New Zealand). An automated artifact detection and rejection algorithm was developed, and its performance was compared with a reference standard comprising consensus labeling by 3 analysis experts, followed by comparison with 6 clinicians (3 untrained and 3 trained in artifact detection). Inter-rater reliability was calculated using Fleiss' kappa. KEY

resultsInter-rater reliability was 0.84 (95% CI:0.77-0.90) among experts, 0.76 (95% CI:0.68-0.83) among untrained clinicians, and 0.71 (95% CI:0.62-0.79) among trained clinicians. The sensitivity and specificity of the algorithm against experts was 96% (95% CI:91%-100%) and 95% (95% CI:90%-99%), respectively, vs 77% (95% CI:68%-85%) and 99% (95% CI:96%-100%) against untrained clinicians, and 97% (95% CI:92%-100%) and 88% (95% CI:82%-94%) against trained clinicians. CONCLUSIONS & INFERENCES: An automated artifact detection and rejection algorithm was developed showing >95% sensitivity and specificity vs expert markers. This algorithm overcomes an important challenge in the clinical translation of BSGM and is now being routinely implemented in patient test interpretations.

Indexed as

AlgorithmsArtifactsBody Surface Potential MappingElectromyographyHumansReproducibility of Resultsartifactautomated artifact rejectionelectrogastrographygastric myoelectrical activityhigh-resolution

Identifiers

PMID35699347
PMCPMC9786272
OpenAlexW4282927708

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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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.