Evidence map›Paper›PMID 40019566›Full record

SynthesisSurgical endoscopy2025

Quantification of indocyanine green fluorescence angiography in colorectal surgery: a systematic review of the literature.

Philip D McEntee, Ashokkumar Singaravelu, Cathleen A McCarrick, Edward Murphy, Patrick A Boland, Ronan A Cahill

Abstract readSystematic Review
In one paragraph

Synthesis in Surgical endoscopy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed, 2 syntheses or guidelines 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

6 authors.

Philip D McEnteeUCD Centre for Precision Surgery, UCD, 47 Eccles Street, Dublin 7, Dublin, Ireland.ORCID http://orcid.org/0000-0002-3907-5398
Ashokkumar SingaraveluUCD Centre for Precision Surgery, UCD, 47 Eccles Street, Dublin 7, Dublin, Ireland.
Cathleen A McCarrickUCD Centre for Precision Surgery, UCD, 47 Eccles Street, Dublin 7, Dublin, Ireland.
Edward MurphyUCD Centre for Precision Surgery, UCD, 47 Eccles Street, Dublin 7, Dublin, Ireland.
Patrick A BolandUCD Centre for Precision Surgery, UCD, 47 Eccles Street, Dublin 7, Dublin, Ireland.
Ronan A CahillUCD Centre for Precision Surgery, UCD, 47 Eccles Street, Dublin 7, Dublin, Ireland. ronan.cahill@ucd.ie.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIndocyanine green fluorescence angiography (ICGFA) during colorectal surgery associates with reduced post-operative anastomotic complication rates. Because its interpretation is subjective, quantification has been proposed to address inter-user variability. This study reviews the published literature regarding ICGFA quantification during colorectal surgery with a focus on impactful clinical deployment.

methodsA systematic review was performed of English language publications regarding clinical studies of ICGFA quantification in colorectal surgery in PubMed, Scopus, Web of Science and Cochrane Library on 29th August 2024, updated to 18th November 2024, following PRISMA guidelines. Newcastle Ottawa scale (NOS) was used to assess quality.

resultsA total of 1428 studies were screened with 22 studies (1469 patients) selected. There was significant heterogeneity of ICGFA methodology, quantification methods and parameter selection and only three studies were NOS "high" quality. Extracorporeal application was most common. Four studies (154 patients) conducted real-time ICGFA analyses (others were post hoc) and four utilised artificial intelligence methods. Eleven studies only included patients undergoing left-sided resection (six focusing specifically on rectal resections). Only one study employed the quantification method to guide intra-operative decision-making regarding colonic transection. Twenty-six different perfusion parameters were assessed, with time from injection to visible fluorescence and maximum intensity the most commonly (but not only) correlated parameters regarding anastomotic complication (n = 18). Other grounding correlates were tissue oxygenation (n = 3, two with hyperspectral imagery), metabolites (n = 2) and surgeon interpretation (n = 5).

conclusionQuantification of the ICGFA signal for colorectal surgery is feasible but has so far seen limited academic advancement beyond feasibility.

Indexed as

ColonColorectal SurgeryFluorescein AngiographyIndocyanine GreenPostoperative ComplicationsRectumColoring AgentsHumansColoring AgentsIndocyanine GreenColorectal surgeryFluorescence angiographyIndocyanine greenNear infrared laparoscopyQuantification

Identifiers

PMID40019566
PMCPMC11933147

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.