Evidence map›Paper›PMID 36114346›Full record

ArticleSurgical endoscopy2023

Feasibility and comparison of laparoscopic laser speckle contrast imaging to near-infrared display of indocyanine green in intraoperative tissue blood flow/tissue perfusion in preclinical porcine models.

Chibueze A Nwaiwu, Vasiliy E Buharin, Anderson Mach, Robin Grandl, Matthew L King, Alyson F Dechert, Liam O'Shea, Steven D Schwaitzberg, Peter C W Kim

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Article in Surgical endoscopy, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.1field-weighted citation impact, top 12% 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

11 citing papers in PubMed, 20 citations in OpenAlex.

  1. Article
  2. Minimally Invasive Bowel Cancer Detection through Vibrating Microrobot-Induced Elastography.Advanced intelligent systems (Weinheim an der Bergstrasse, Germany) · 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

9 authors at 2 institutions in 1 country.

Chibueze A NwaiwuDepartment of Surgery, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI, USA.
Vasiliy E BuharinActiv Surgical Inc, 30 Thomson Place, 2nd Floor, Boston, MA, 02127, USA.
Anderson MachActiv Surgical Inc, 30 Thomson Place, 2nd Floor, Boston, MA, 02127, USA.
Robin GrandlActiv Surgical Inc, 30 Thomson Place, 2nd Floor, Boston, MA, 02127, USA.
Matthew L KingActiv Surgical Inc, 30 Thomson Place, 2nd Floor, Boston, MA, 02127, USA.
Alyson F DechertActiv Surgical Inc, 30 Thomson Place, 2nd Floor, Boston, MA, 02127, USA.
Liam O'SheaActiv Surgical Inc, 30 Thomson Place, 2nd Floor, Boston, MA, 02127, USA.
Steven D SchwaitzbergDepartment of Surgery, University of Buffalo, Buffalo, NY, USA.
Peter C W KimDepartment of Surgery, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI, USA. pkim@activsurgical.com.
Rhode Island Hospital · USUniversity at Buffalo, State University of New York · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo determine if laser speckle contrast imaging (LSCI) mitigates variations and subjectivity in the use and interpretation of indocyanine green (ICG) fluorescence in the current visualization paradigm of real-time intraoperative tissue blood flow/perfusion in clinically relevant scenarios.

methodsDe novo laparoscopic imaging form-factor detecting real-time blood flow using LSCI and blood volume by near-infrared fluorescence (NIRF) of ICG was compared to ICG NIRF alone, for dye-less real-time visualization of tissue blood flow/perfusion. Experienced surgeons examined LSCI and ICG in segmentally devascularized intestine, partial gastrectomy, and the renal hilum across six porcine models. Precision and accuracy of identifying demarcating lines of ischemia/perfusion in tissues were determined in blinded subjects with varying levels of surgical experience.

resultsUnlike ICG, LSCI perfusion detection was real time (latency < 150 ms: p < 0.01), repeatable and on-demand without fluorophore injection. Operating surgeons (n = 6) precisely and accurately identified concordant demarcating lines in white light, LSCI, and ICG modes immediately. Blinded subjects (n = 21) demonstrated similar spatial-temporal precision and accuracy with all three modes ≤ 2 min after ICG injection, and discordance in ICG mode at ≥ 5 min in devascularized small intestine (p < 0.0001) and in partial gastrectomy (p < 0.0001).

conclusionsCombining LSCI for near real-time blood flow detection with ICG fluorescence for blood volume detection significantly improves precision and accuracy of perfusion detection in tissue locations over time, in real time, and repeatably on-demand than ICG alone.

Indexed as

Indocyanine GreenLaparoscopyAnimalsFeasibility StudiesLaser Speckle Contrast ImagingPerfusionSwineIndocyanine GreenAnastomosisDye-less real-time perfusionIndocyanine greenLaser speckle contrast imagingNear-infrared fluorescence

Identifiers

PMID36114346
OpenAlexW4296071811

What OpenQuestion holds

Textmetadata
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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.