Evidence map›Paper›PMID 21396660›Full record

ArticleThe Journal of surgical research2012

Near-infrared fluorescence imaging of liver metastases in rats using indocyanine green.

Joost R van der Vorst, Merlijn Hutteman, J Sven D Mieog, Karien E de Rooij, Eric L Kaijzel, Clemens W G M Löwik, Hein Putter, Peter J K Kuppen, John V Frangioni, Cornelis J H van de Velde and 1 more

Abstract read
In one paragraph

Article in The Journal of surgical research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 11% 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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 43 citations in OpenAlex.

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  20. LED light source for fluorescence endoscopy using quantum dots.... IEEE point-of-care healthcare technologies. PHT (Conference) · 2013
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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

11 authors at 2 institutions in 2 countries.

Joost R van der VorstDepartment of Surgery, Leiden University Medical Center, Leiden, The Netherlands.
Merlijn Hutteman
J Sven D Mieog
Karien E de Rooij
Eric L Kaijzel
Clemens W G M Löwik
Hein Putter
Peter J K Kuppen
John V Frangioni
Cornelis J H van de Velde
Alexander L Vahrmeijer
Leiden University Medical Center · NLBeth Israel Deaconess Medical Center · US

Funding

Intraoperative Near-Infrared Fluorescence ImagingR01CA115296 · NCI · CURADEL, LLC · PI FRANGIONI, JOHN V · 2005 to 2014
$13.9M
Ultra-Low Background NIR Fluorophores for In Vivo Imaging and Image-Guided SurgerR01EB010022 · NIBIB · CURADEL, LLC · PI CHOI, HAK SOO, FRANGIONI, JOHN V · 2010 to 2013
$2.8M
NCI NIH HHS R01 CA115296NCI NIH HHS R01-CA-115296NIBIB NIH HHS R01 EB010022NIBIB NIH HHS R01-EB-010022
6 · The paper itself

Abstract

backgroundNear-infrared (NIR) fluorescence imaging using indocyanine green (ICG) is a promising technique to obtain real-time assessment of the extent and number of colorectal liver metastases during surgery. The current study aims to optimize dosage and timing of ICG administration. MATERIALS AND

methodsLiver tumors were induced in 18 male WAG/Rij rats by subcapsular inoculation of CC531 rat colorectal cancer cells into three distinct liver lobes. Rats were divided in two groups: imaging after 24 and 48 h or 72 and 96 h after intravenous ICG administration. In each time group, rats were allocated to three dose groups: 0.04, 0.08, or 0.16 mg ICG. Intraoperative imaging and ex vivo measurements were performed using the Mini-FLARE imaging system and confirmed by fluorescence microscopy. Fluorescence intensity was quantified using the Mini-FLARE software and the difference between tumor signal and liver signal (tumor-to-liver ratio; TLR) was calculated.

resultsIn all 18 rats, all colorectal liver metastases (n = 34), some as small as 1.2 mm, were identified using ICG and the Mini-FLARE imaging system. Average tumor-to-liver ratio (TLR) over all groups was 3.0 ± 1.2. TLR was significantly higher in the 72 h time group compared with other time points. ICG dose did not significantly influence TLR, but a trend was found favoring the 0.08 mg dose group. Fluorescence microscopy demonstrated a clear fluorescent rim around the tumor.

conclusionsThis study demonstrates that colorectal cancer liver metastases can be clearly identified during surgery using ICG and the Mini-FLARE imaging system, with optimal timing of 72 h post-injection and an optimal dose of 0.08 mg (0.25 mg/kg) ICG. NIR fluorescence imaging has the potential to improve intraoperative detection of micrometastases and, thus, the completeness of resection.

Indexed as

Coloring AgentsIndocyanine GreenAnimalsCarcinomaCell Line, TumorColorectal NeoplasmsDiagnostic ImagingIntraoperative PeriodLiver Neoplasms, ExperimentalMaleRatsColoring AgentsIndocyanine Green

Identifiers

PMID21396660
PMCPMC3138836
OpenAlexW2148187845

What OpenQuestion holds

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LicenceTDM
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.