Evidence map›Paper›PMID 33398567›Full record

ArticleSurgical endoscopy2021

Inter-user variation in the interpretation of near infrared perfusion imaging using indocyanine green in colorectal surgery.

Niall P Hardy, Jeffrey Dalli, Mohammad Faraz Khan, Predrag Andrejevic, Peter M Neary, Ronan A Cahill

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In one paragraph

Article in Surgical endoscopy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 4 pooled it
7.9field-weighted citation impact, top 2% 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

35 citing papers in PubMed, 4 syntheses or guidelines pooled it, 56 citations in OpenAlex.

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  13. AUGUR-AIM: Clinical validation of an artificial intelligence indocyanine green fluorescence angiography expert representer.Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland · 2025
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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

6 authors at 3 institutions in 2 countries.

Niall P HardyUCD Centre for Precision Surgery, University College Dublin, Dublin, Ireland.ORCID 0000-0002-7036-3910
Jeffrey DalliUCD Centre for Precision Surgery, University College Dublin, Dublin, Ireland.
Mohammad Faraz KhanUCD Centre for Precision Surgery, University College Dublin, Dublin, Ireland.
Predrag AndrejevicDepartment of Surgery, Mater Dei Hospital, Msida, Malta.
Peter M NearyDepartment of Surgery, University Hospital Waterford, University College Cork, Waterford, Ireland.
Ronan A CahillUCD Centre for Precision Surgery, University College Dublin, Dublin, Ireland. ronan.cahill@ucd.ie.
University College Dublin · IEMater Dei Hospital · MTUniversity College Cork · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionDespite increasing endorsement of near-infrared perfusion assessment using indocyanine green (ICG) during colorectal surgery, little work has yet been done regarding learning curve and interobserver variation most especially on surgical video reflective of real-world usage.

methodsSurgeons with established expertise in ICG usage were invited to participate in the study along with others without such experience including trainees. All participants completed an opinion questionnaire and interpreted video presentations of fluorescence angiograms in a variety of colorectal case scenarios. An interactive video platform (Mindstamp) enabled dynamic annotation. Statistical analysis of data was performed using Kruskal-Wallis and Mann-Whitney testing as well as Intraclass Correlation Coefficients and Fleiss Multi-rater Kappa Scoring.

resultsForty participants (six experts) completed questionnaire data and provided judgement of 14 videos (nine showing proximal colonic transection site perfusion, four showing completed anastomoses and one an acutely strangulated bowel). 70% felt > 10 cases were needed for competency in use with the majority of experts advocating > 50 (p < 0.05). Overall agreement among experts was "good" for videos showing colonic transection perfusion (versus "moderate" among in-experts) with experts clustering more distally. In contrast, there was no interpretation concordance among experts or in-experts when judging ICG perfusion sufficiency on a yes/no basis.

conclusionSignificant experience is recommended before reliance on ICG perfusion angiograms. ICG fluorescence assessment is prone to variable interpretation and influenced by experience and, perhaps, knowledge of preassessment operative steps suggesting a role for objective flow analysis with artificial intelligence methods as the next phase of this technology.

Indexed as

Colorectal SurgeryIndocyanine GreenAnastomosis, SurgicalAnastomotic LeakArtificial IntelligenceHumansPerfusionPerfusion ImagingIndocyanine GreenColorectal surgeryIndocyanine greenInterobserver variabilityLearning curveNear-infrared laparoscopyPerfusion angiogram

Identifiers

PMID33398567
OpenAlexW3119602100

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.