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Dalli J, Reilly F, Epperlein J, Potter S, Cahill R. Advancing indocyanine green fluorescence flap perfusion assessment via near infrared signal quantification. JPRAS Open 2024; 41:203-214. [PMID: 39050743 PMCID: PMC11266865 DOI: 10.1016/j.jpra.2024.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 05/25/2024] [Indexed: 07/27/2024] Open
Abstract
Introduction Intraoperative indocyanine green fluorescence angiography (ICGFA) perfusion assessment has been demonstrated to reduce complications in reconstructive surgery. This study sought to advance ICGFA flap perfusion assessment via quantification methodologies. Method Patients undergoing pedicled and free flap reconstruction were subjected to intraoperative ICGFA flap perfusion assessment using either an open or endoscopic system. Patient demographics, clinical impact of ICGFA and outcomes were documented. From the ICGFA recordings, fluorescence signal quality, as well as inflow/outflow milestones for the flap and surrounding (control) tissue were computationally quantified post hoc and compared on a region of interest (ROI) level. Further software development intended full flap quantification, metric computation and heatmap generation. Results Fifteen patients underwent ICGFA assessment at reconstruction (8 head and neck, 6 breast and 1 perineum) including 10 free and 5 pedicled flaps. Visual ICGFA interpretation altered on-table management in 33.3% of cases, with flap edges trimmed in 4 and a re-anastomosis in 1 patient. One patient suffered post-operative flap dehiscence. Laparoscopic camera use proved feasible but recorded a lower quality signal than the open system.Using established and novel metrics, objective ICGFA signal ROI quantification permitted perfusion comparisons between the flap and surrounding tissue. Full flap assessment feasibility was demonstrated by computing all pixels and subsequent outputs summarisation as heatmaps. Conclusion This trial demonstrated the feasibility and potential for ICGFA with operator based and quantitative flap perfusion assessment across several reconstructive applications. Further development and implementation of these computational methods requires technique and device standardisation.
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Affiliation(s)
- J. Dalli
- UCD Centre for Precision Surgery, School of Medicine, UCD, Dublin, Ireland
| | - F. Reilly
- Department of Plastic & Reconstructive Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | | | - S. Potter
- Department of Plastic & Reconstructive Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
- UCD School of Medicine, UCD, Dublin, Ireland
| | - R. Cahill
- UCD Centre for Precision Surgery, School of Medicine, UCD, Dublin, Ireland
- Department of Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
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Oppermann C, Dohrn N, Pardes HY, Klein MF, Eriksen T, Gögenur I. Real time organ hypoperfusion detection using Indocyanine Green in a piglet model. Surg Endosc 2024; 38:4296-4305. [PMID: 38869642 PMCID: PMC11289266 DOI: 10.1007/s00464-024-10938-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 05/17/2024] [Indexed: 06/14/2024]
Abstract
BACKGROUND Preserving sufficient oxygen supply to the tissue is fundamental for maintaining organ function. However, our ability to identify those at risk and promptly recognize tissue hypoperfusion during abdominal surgery is limited. To address this problem, we aimed to develop a new method of perfusion monitoring that can be used during surgical procedures and aid surgeons' decision-making. METHODS In this experimental porcine study, thirteen subjects were randomly assigned one organ of interest [stomach (n = 3), ascending colon (n = 3), rectum (n = 3), and spleen (n = 3)]. After baseline perfusion recordings, using high-frequency, low-dose bolus injections with weight-adjusted (0.008 mg/kg) ICG, organ-supplying arteries were manually and completely occluded leading to hypoperfusion of the target organ. Continuous organ perfusion monitoring was performed throughout the experimental conditions. RESULTS After manual occlusion of pre-selected organ-supplying arteries, occlusion of the peripheral arterial supply translated in an immediate decrease in oscillation signal in most organs (3/3 ventricle, 3/3 ascending colon, 3/3 rectum, 2/3 spleen). Occlusion of the central arterial supply resulted in a further decrease or complete disappearance of the oscillation curves in the ventricle (3/3), ascending colon (3/3), rectum (3/3), and spleen (1/3). CONCLUSION Continuous organ-perfusion monitoring using a high-frequency, low-dose ICG bolus regimen can detect organ hypoperfusion in real-time.
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Affiliation(s)
- Carolin Oppermann
- Center for Surgical Science, Zealand University Hospital, Lykkebækvej 1, 4600, Køge, Denmark.
| | - Niclas Dohrn
- Center for Surgical Science, Zealand University Hospital, Lykkebækvej 1, 4600, Køge, Denmark
- Department of Surgery, Copenhagen University Hospital, Herlev & Gentofte, Borgmester Ib Juuls Vej 1, 2730, Herlev, Denmark
| | - Helin Yikilmaz Pardes
- Center for Surgical Science, Zealand University Hospital, Lykkebækvej 1, 4600, Køge, Denmark
| | - Mads Falk Klein
- Center for Surgical Science, Zealand University Hospital, Lykkebækvej 1, 4600, Køge, Denmark
| | - Thomas Eriksen
- Institute for Clinical Veterinary Medicine, University of Copenhagen, Dyrelægevej 16, 1870, Frederiksberg C, Denmark
| | - Ismail Gögenur
- Department of Surgery, Copenhagen University Hospital, Herlev & Gentofte, Borgmester Ib Juuls Vej 1, 2730, Herlev, Denmark
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Skinner GC, Marois M, Oberlin J, McCulloh CJ, Schwaitzberg SD, Kim PC. Dye-less quantification of tissue perfusion by laser speckle contrast imaging is equivalent to quantified indocyanine green in a porcine model. Surg Endosc 2024:10.1007/s00464-024-11061-w. [PMID: 39075313 DOI: 10.1007/s00464-024-11061-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Accepted: 07/06/2024] [Indexed: 07/31/2024]
Abstract
INTRODUCTION Subjective surgeon interpretation of near-infrared perfusion video is limited by low inter-observer agreement and poor correlation to clinical outcomes. In contrast, quantification of indocyanine green fluorescence video (Q-ICG) correlates with histologic level of perfusion as well as clinical outcomes. Measuring dye volume over time, however, has limitations, such as it is not on-demand, has poor spatial resolution, and is not easily repeatable. Laser speckle contrast imaging quantification (Q-LSCI) is a real-time, dye-free alternative, but further validation is needed. We hypothesize that Q-LSCI will distinguish ischemic tissue and correlate over a range of perfusion levels equivalent to Q-ICG. METHODS Nine sections of intestine in three swine were devascularized. Pairs of indocyanine green fluorescence imaging and laser speckle contrast imaging video were quantified within perfused, watershed, and ischemic regions. Q-ICG used normalized peak inflow slope. Q-LSCI methods were laser speckle perfusion units (LSPU), the base unit of laser speckle imaging, relative perfusion units (RPU), a previously described methodology which utilizes an internal control, and zero-lag normalized cross-correlation (X-Corr), to investigate if the signal deviations convey accurate perfusion information. We determine the ability to distinguish ischemic regions and correlation to Q-ICG over a perfusion gradient. RESULTS All modalities distinguished ischemic from perfused regions of interest; Q-ICG values of 0.028 and 0.155 (p < 0.001); RPU values of 0.15 and 0.68 (p < 0.001); and X-corr values of 0.73 and 0.24 (p < 0.001). Over a range of perfusion levels, RPU had the best correlation with Q-ICG (r = 0.79, p < 0.001) compared with LSPU (r = 0.74, p < 0.001) and X-Corr (r = 0.46, p < 0.001). CONCLUSION These results demonstrate that Q-LSCI discriminates ischemic from perfused tissue and represents similar perfusion information over a broad range of perfusion levels comparable to clinically validated Q-ICG. This suggests that Q-LSCI might offer clinically predictive real-time dye-free quantification of tissue perfusion. Further work should include validation in histologic studies and human clinical trials.
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Affiliation(s)
- Garrett C Skinner
- Department of Surgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Conventus, Buffalo, NY, USA
- Activ Surgical Inc., Boston, MA, USA
| | | | | | | | - Steven D Schwaitzberg
- Department of Surgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Conventus, Buffalo, NY, USA
| | - Peter C Kim
- Department of Surgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Conventus, Buffalo, NY, USA.
- Activ Surgical Inc., Boston, MA, USA.
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Heuvelings DJI, Scheepers MHMC, Al-Difaie Z, Okamoto N, Diana M, Stassen LPS, Bouvy ND, Al-Taher M. Quantitative analysis of intestinal perfusion with indocyanine green (ICG) and methylene blue (MB) using a single clinically approved fluorescence imaging system: a demonstration in a porcine model. Surg Endosc 2024; 38:3556-3563. [PMID: 38727831 PMCID: PMC11219451 DOI: 10.1007/s00464-024-10864-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 04/14/2024] [Indexed: 07/03/2024]
Abstract
BACKGROUND Near-infrared fluorescence (NIRF) angiography with intraoperative administration of indocyanine green (ICG) has rapidly disseminated in clinical practice. Another clinically approved, and widely available dye, methylene blue (MB), has up to now not been used for this purpose. Recently, we demonstrated promising results for the real-time evaluation of intestinal perfusion using this dye. The primary aim of this study was to perform a quantitative analysis of bowel perfusion assessment for both ICG and MB. METHODS Four mature female Landrace pigs underwent laparotomy under general anesthesia. An ischemic bowel loop with five regions of interest (ROIs) with varying levels of perfusion was created in each animal. An intravenous (IV) injection of 0.25 mg/kg-0.50 mg/kg MB was administered after 10 min, followed by NIRF imaging in MB mode and measurement of local lactate levels in all corresponding ROIs. This procedure was repeated in ICG mode (IV dose of 0.2 mg/kg) after 60 min. The quest spectrum fluorescence camera (Quest Medical Imaging, Middenmeer, The Netherlands) was used for NIRF imaging of both MB and ICG. RESULTS Intraoperative NIRF imaging of bowel perfusion assessment with MB and ICG was successful in all studied animals. Ingress (i/s) levels were calculated and correlated with local lactate levels. Both MB and ICG ingress values showed a significant negative correlation (r = - 0.7709; p = < 0.001; r = - 0.5367, p = 0.015, respectively) with local lactate levels. This correlation was stronger for MB compared to ICG, although ICG analysis showed higher absolute ingress values. CONCLUSION Our fluorescence quantification analysis validates the potential to use MB for bowel perfusion assessment besides the well-known and widely used ICG. Further human studies are necessary to translate our findings to clinical applications.
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Affiliation(s)
- Danique J I Heuvelings
- NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands.
- Department of Surgery, Maastricht University Medical Center, Maastricht, The Netherlands.
| | - Max H M C Scheepers
- Department of Surgery, Maastricht University Medical Center, Maastricht, The Netherlands
- GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Zaid Al-Difaie
- Department of Surgery, Maastricht University Medical Center, Maastricht, The Netherlands
- GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Nariaki Okamoto
- IRCAD, Research Institute Against Digestive Cancer, Strasbourg, France
- ICube Laboratory, Photonics Instrumentation for Health, Strasbourg, France
| | - Michele Diana
- IRCAD, Research Institute Against Digestive Cancer, Strasbourg, France
- ICube Laboratory, Photonics Instrumentation for Health, Strasbourg, France
- Department of Digestive and Endocrine Surgery, University Hospital of Strasbourg, Strasbourg, France
| | - Laurents P S Stassen
- Department of Surgery, Maastricht University Medical Center, Maastricht, The Netherlands
- GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Nicole D Bouvy
- Department of Surgery, Maastricht University Medical Center, Maastricht, The Netherlands
- GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Mahdi Al-Taher
- Department of Surgery, Maastricht University Medical Center, Maastricht, The Netherlands
- IRCAD, Research Institute Against Digestive Cancer, Strasbourg, France
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Zötterman J, Tesselaar E, Elawa S, Elmasry M, Farnebo S. Perfusion Mapping of Flaps Using Indocyanine Green Fluorescence Angiography and Laser Speckle Contrast Imaging. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2024; 12:e5964. [PMID: 39071769 PMCID: PMC11281778 DOI: 10.1097/gox.0000000000005964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 05/09/2024] [Indexed: 07/30/2024]
Abstract
Background Indocyanine green fluorescence angiography (ICG-FA) is often used for assessing tissue circulation in reconstructive surgery. Indocyanine green (ICG) is injected intravenously and visualized in the tissue with an infrared camera. The information is used to plan the surgery, for example, in free flap breast reconstructions. Laser speckle contrast imaging (LSCI) is another method that uses laser to assess tissue perfusion in the skin. Unlike ICG-FA, LSCI is noninvasive and may therefore have an advantaged compared with ICG-FA. The aim of this study was to evaluate the correlation between information obtained from these two techniques. Methods Five deep inferior epigastric perforator patients were included. The flaps were assessed with LSCI and ICG-FA. For LSCI, the perfusion was calculated in 32 regions of interest. For ICG-FA, the maximum slope and area under curve (AUC) were calculated based on average pixel intensity data. Results Large variations in maximum slope values could be seen between flaps, whereas AUC had lower variability within the same flap and between flaps. Pearson rank correlation comparing average perfusion (LSCI) and AUC (ICG-FA) showed a correlation between the values (r = 0.55, P < 0.0001). No significant correlation was observed between perfusion and maximum slope (r = 0.11, P = 0.18). Conclusions There is a significant correlation between data obtained using LSCI and ICG-FA, when ICG-FA data are presented as AUC of the ICG-FA intensity curve. Maximum slope lacks significant correlation with flap data obtained with LSCI. The study indicates that LSCI may be used in reconstructive surgery to assess tissue circulation in a way similar to ICG-FA.
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Affiliation(s)
- Johan Zötterman
- From the Department of Hand and Plastic Surgery and Burns and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Erik Tesselaar
- Department of Medical Radiation Physics and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Sherif Elawa
- From the Department of Hand and Plastic Surgery and Burns and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Moustafa Elmasry
- From the Department of Hand and Plastic Surgery and Burns and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Simon Farnebo
- From the Department of Hand and Plastic Surgery and Burns and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
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Shibata T, Doi N, Shibata Y, Minokawa S, Miyake S, Izaki T. Application of indocyanine green fluorescence angiography in evaluating blood flow in rotator cuff tears: a preliminary study. J Shoulder Elbow Surg 2024:S1058-2746(24)00426-9. [PMID: 38909639 DOI: 10.1016/j.jse.2024.04.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 04/23/2024] [Accepted: 04/23/2024] [Indexed: 06/25/2024]
Abstract
BACKGROUND The relationship between the degree of vascularization at the edge of a torn rotator cuff tendon and cuff healing remains unclear. The purpose of this study was to employ indocyanine green (ICG) fluorescence angiography to evaluate the blood flow at the edge of a torn rotator cuff tendon under the subacromial view. METHODS Thirteen shoulders of 13 patients who underwent arthroscopic repair of full-thickness rotator cuff tears were included in this prospective study. Viewing from the posterolateral portal, ICG at 0.2 mg/kg body weight was intravenously administered, and the blood flow was recorded. After resecting the poorly vascularized torn edge of the tendon, ICG administration was repeated at the same volume. The fluorescence intensity and perfusion time of the tendon blood flow were evaluated using video analysis and modeling tools. Cuff integrity was evaluated using magnetic resonance imaging at 6 months postoperatively. Patients were divided into healed and retear groups, and the differences in the degree of blood flow were evaluated. RESULTS ICG fluorescence angiography could visualize the blood flow in the rotator cuff tendon, and the torn edge of the tendon with poor blood flow was resected. The overall retear rate was 23.1% (3/13). Based on quantitative analysis, the fluorescence intensity factors were significantly lower in the retear group than in the healed group before tendon débridement. The retear rate in the high blood flow group was 0% (0/7), while that in the low blood flow group was 50.0% (3/6). CONCLUSIONS ICG fluorescence angiography may play a role in the future of shoulder arthroscopy. Further study is needed to determine the effect of blood flow on tendon healing.
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Affiliation(s)
- Terufumi Shibata
- Department of Orthopaedic Surgery, Fukuoka University Faculty of Medicine, Jonan-ku, Fukuoka, Japan; Department of Orthopaedic Surgery, Fukuoka University Chikushi Hospital, Chikushino, Fukuoka, Japan.
| | - Nobunao Doi
- Department of Orthopaedic Surgery, Fukuoka University Chikushi Hospital, Chikushino, Fukuoka, Japan
| | - Yozo Shibata
- Department of Orthopaedic Surgery, Fukuoka University Chikushi Hospital, Chikushino, Fukuoka, Japan
| | - So Minokawa
- Department of Orthopaedic Surgery, Fukuoka University Chikushi Hospital, Chikushino, Fukuoka, Japan
| | - Satoshi Miyake
- Department of Orthopaedic Surgery, Fukuoka University Faculty of Medicine, Jonan-ku, Fukuoka, Japan
| | - Teruaki Izaki
- Department of Orthopaedic Surgery, Fukuoka University Chikushi Hospital, Chikushino, Fukuoka, Japan
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7
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Dalli J, Epperlein JP, Hardy NP, Khan MF, Mac Aonghusa P, Cahill RA. Clinical and computational development of a patient-calibrated ICGFA bowel transection recommender. Surg Endosc 2024; 38:3212-3222. [PMID: 38637339 PMCID: PMC11133155 DOI: 10.1007/s00464-024-10827-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 03/23/2024] [Indexed: 04/20/2024]
Abstract
INTRODUCTION Intraoperative indocyanine green fluorescence angiography (ICGFA) aims to reduce colorectal anastomotic complications. However, signal interpretation is inconsistent and confounded by patient physiology and system behaviours. Here, we demonstrate a proof of concept of a novel clinical and computational method for patient calibrated quantitative ICGFA (QICGFA) bowel transection recommendation. METHODS Patients undergoing elective colorectal resection had colonic ICGFA both immediately after operative commencement prior to any dissection and again, as usual, just before anastomotic construction. Video recordings of both ICGFA acquisitions were blindly quantified post hoc across selected colonic regions of interest (ROIs) using tracking-quantification software and computationally compared with satisfactory perfusion assumed in second time-point ROIs, demonstrating 85% agreement with baseline ICGFA. ROI quantification outputs detailing projected perfusion sufficiency-insufficiency zones were compared to the actual surgeon-selected transection/anastomotic construction site for left/right-sided resections, respectively. Anastomotic outcomes were recorded, and tissue lactate was also measured in the devascularised colonic segment in a subgroup of patients. The novel perfusion zone projections were developed as full-screen recommendations via overlay heatmaps. RESULTS No patient suffered intra- or early postoperative anastomotic complications. Following computational development (n = 14) the software recommended zone (ROI) contained the expert surgical site of transection in almost all cases (Jaccard similarity index 0.91) of the nine patient validation series. Previously published ICGFA time-series milestone descriptors correlated moderately well, but lactate measurements did not. High resolution augmented reality heatmaps presenting recommendations from all pixels of the bowel ICGFA were generated for all cases. CONCLUSIONS By benchmarking to the patient's own baseline perfusion, this novel QICGFA method could allow the deployment of algorithmic personalised NIR bowel transection point recommendation in a way fitting existing clinical workflow.
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Affiliation(s)
- Jeffrey Dalli
- UCD Centre for Precision Surgery, School of Medicine, University College Dublin, Catherine McAuley Centre, 21 Nelson St, Dublin 7, D07 KX5K, Ireland
- Department of Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | | | - Niall P Hardy
- UCD Centre for Precision Surgery, School of Medicine, University College Dublin, Catherine McAuley Centre, 21 Nelson St, Dublin 7, D07 KX5K, Ireland
- Department of Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - Mohammad Faraz Khan
- UCD Centre for Precision Surgery, School of Medicine, University College Dublin, Catherine McAuley Centre, 21 Nelson St, Dublin 7, D07 KX5K, Ireland
- Department of Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | | | - Ronan A Cahill
- UCD Centre for Precision Surgery, School of Medicine, University College Dublin, Catherine McAuley Centre, 21 Nelson St, Dublin 7, D07 KX5K, Ireland.
- Department of Surgery, Mater Misericordiae University Hospital, Dublin, Ireland.
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Nijssen DJ, Joosten JJ, Osterkamp J, van den Elzen RM, de Bruin DM, Svendsen MBS, Dalsgaard MW, Gisbertz SS, Hompes R, Achiam MP, van Berge Henegouwen MI. Quantification of fluorescence angiography for visceral perfusion assessment: measuring agreement between two software algorithms. Surg Endosc 2024; 38:2805-2816. [PMID: 38594365 PMCID: PMC11078848 DOI: 10.1007/s00464-024-10794-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 03/09/2024] [Indexed: 04/11/2024]
Abstract
BACKGROUND Indocyanine green fluorescence angiography (ICG-FA) may reduce perfusion-related complications of gastrointestinal anastomosis. Software implementations for quantifying ICG-FA are emerging to overcome a subjective interpretation of the technology. Comparison between quantification algorithms is needed to judge its external validity. This study aimed to measure the agreement for visceral perfusion assessment between two independently developed quantification software implementations. METHODS This retrospective cohort analysis included standardized ICG-FA video recordings of patients who underwent esophagectomy with gastric conduit reconstruction between August 2020 until February 2022. Recordings were analyzed by two quantification software implementations: AMS and CPH. The quantitative parameter used to measure visceral perfusion was the normalized maximum slope derived from fluorescence time curves. The agreement between AMS and CPH was evaluated in a Bland-Altman analysis. The relation between the intraoperative measurement of perfusion and the incidence of anastomotic leakage was determined for both software implementations. RESULTS Seventy pre-anastomosis ICG-FA recordings were included in the study. The Bland-Altman analysis indicated a mean relative difference of + 58.2% in the measurement of the normalized maximum slope when comparing the AMS software to CPH. The agreement between AMS and CPH deteriorated as the magnitude of the measured values increased, revealing a proportional (linear) bias (R2 = 0.512, p < 0.001). Neither the AMS nor the CPH measurements of the normalized maximum slope held a significant relationship with the occurrence of anastomotic leakage (median of 0.081 versus 0.074, p = 0.32 and 0.041 vs 0.042, p = 0.51, respectively). CONCLUSION This is the first study to demonstrate technical differences in software implementations that can lead to discrepancies in ICG-FA quantification in human clinical cases. The possible variation among software-based quantification methods should be considered when interpreting studies that report quantitative ICG-FA parameters and derived thresholds, as there may be a limited external validity.
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Affiliation(s)
- D J Nijssen
- Department of Surgery, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, The Netherlands
| | - J J Joosten
- Department of Surgery, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, The Netherlands
| | - J Osterkamp
- Department of Surgery and Transplantation, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - R M van den Elzen
- Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, The Netherlands
- Amsterdam UMC Location University of Amsterdam, Biomedical Engineering and Physics, Meibergdreef 9, Amsterdam, The Netherlands
| | - D M de Bruin
- Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, The Netherlands
- Amsterdam UMC Location University of Amsterdam, Biomedical Engineering and Physics, Meibergdreef 9, Amsterdam, The Netherlands
| | - M B S Svendsen
- Copenhagen Academy for Medical Education and Simulation, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
- Department of Computer Science, SCIENCE, University of Copenhagen, Copenhagen, Denmark
| | - M W Dalsgaard
- Department of Surgery and Transplantation, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - S S Gisbertz
- Department of Surgery, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, The Netherlands
| | - R Hompes
- Department of Surgery, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, The Netherlands
| | - M P Achiam
- Department of Surgery and Transplantation, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - M I van Berge Henegouwen
- Department of Surgery, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands.
- Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, The Netherlands.
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Lau NS, Ly M, Ewenson K, Toomath S, Ly H, Mestrovic N, Liu K, McCaughan G, Crawford M, Pulitano C. Indocyanine green: A novel marker for assessment of graft quality during ex situ normothermic machine perfusion of human livers. Artif Organs 2024; 48:472-483. [PMID: 38132848 DOI: 10.1111/aor.14696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 11/27/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Ex situ machine perfusion facilitates the assessment of livers prior to transplantation. However, currently available markers of liver function poorly predict long-term graft function. Indocyanine green (ICG) is a liver-specific dye which, although common in vivo, has never been comprehensively evaluated for the assessment of graft quality during ex situ machine perfusion. This study aimed to assess the utility of ICG in the ex situ setting. METHODS Using a customized long-term perfusion system, human livers that were not suitable for transplantation were perfused using a red cell-based perfusate. ICG was delivered into the perfusate on days 0, 1, and 4 to assess ICG clearance (spectrophotometric absorbance at 805 nm) and ICG fluorescence (near-infrared camera). RESULTS Sixteen partial livers were perfused for a median duration of 172 h (7.2 days). On day 0, the median ICG perfusate disappearance rate (PDR) was 7.5%/min and the median ICG retention at 15 min was 9.9%. Grafts that survived ≥7 days had a significantly higher median ICG PDR on day 0 (14.5%/min vs. 6.5%/min, p = 0.005) but not on days 1 or 4. ICG perfusion demonstrated that long-surviving grafts had a significantly lower median red-value (89.8 vs. 118.6, p = 0.011) and a significantly lower median blue-value (12.9 vs. 22.6, p = 0.045) than short-surviving grafts. CONCLUSION ICG is a novel marker for the assessment of liver function during ex situ normothermic machine perfusion. ICG PDR and quantitative ICG perfusion can distinguish between long- and short-surviving grafts and demonstrate the utility of ICG in the assessment of graft quality prior to transplant.
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Affiliation(s)
- Ngee-Soon Lau
- Centre for Organ Assessment, Repair and Optimisation, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - Mark Ly
- Centre for Organ Assessment, Repair and Optimisation, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - Kasper Ewenson
- Centre for Organ Assessment, Repair and Optimisation, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - Shamus Toomath
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Hayden Ly
- Centre for Organ Assessment, Repair and Optimisation, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Nicole Mestrovic
- Centre for Organ Assessment, Repair and Optimisation, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - Ken Liu
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - Geoff McCaughan
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - Michael Crawford
- Centre for Organ Assessment, Repair and Optimisation, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - Carlo Pulitano
- Centre for Organ Assessment, Repair and Optimisation, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
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10
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Adams ED, Salem JF, Burch MA, Fleshner PR, Zaghiyan KN. Blinded Intraoperative Quantitative Indocyanine Green Metrics Associate With Intestinal Margin Acceptance in Colorectal Surgery. Dis Colon Rectum 2024; 67:549-557. [PMID: 38064226 DOI: 10.1097/dcr.0000000000003102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/04/2024]
Abstract
BACKGROUND Indocyanine green is a useful tool in colorectal surgery. Quantitative values may enhance and standardize its application. OBJECTIVE To determine whether quantitative indocyanine green metrics correlate with standard subjective indocyanine green perfusion assessment in acceptance or rejection of anastomotic margins. DESIGN Prospective single-arm, single-institution cohort study. Surgeons viewed subjective indocyanine green images but were blinded to quantitative indocyanine green metrics. SETTING Tertiary academic center. PATIENTS Adults undergoing planned intestinal resection. MAIN OUTCOME MEASURES Accepted perfusion and rejected perfusion of the intestinal margin were defined by the absence or presence of ischemia by subjective indocyanine green and gross inspection. The primary outcomes included quantitative indocyanine green values, maximum fluorescence, and time-to-maximum fluorescence in accepted compared to rejected perfusion. Secondary outcomes included maximum fluorescence and time-to-maximum fluorescence values in anastomotic leak. RESULTS There were 89 perfusion assessments comprising 156 intestinal segments. Nine segments were subjectively assessed to have poor perfusion by visual inspection and subjective indocyanine green. Maximum fluorescence (% intensity) exhibited higher intensity in accepted perfusion (accepted perfusion 161% [82%-351%] vs rejected perfusion 63% [10%-76%]; p = 0.03). Similarly, time-to-maximum fluorescence (seconds) was earlier in accepted perfusion compared to rejected perfusion (10 seconds [1-40] vs 120 seconds [90-120]; p < 0.01). Increased BMI was associated with higher maximum fluorescence. Anastomotic leak did not correlate with maximum fluorescence or time-to-maximum fluorescence. LIMITATIONS Small cohort study, not powered to measure the association between quantitative indocyanine green metrics and anastomotic leak. CONCLUSIONS We demonstrated that blinded quantitative values reliably correlate with subjective indocyanine green perfusion assessment. Time-to-maximum intensity is an important metric in perfusion evaluation. Quantitative indocyanine green metrics may enhance intraoperative intestinal perfusion assessment. Future studies may attempt to correlate quantitative indocyanine green values with anastomotic leak. See Video Abstract . LAS MTRICAS CUANTITATIVAS INTRAOPERATORIAS CIEGAS DEL VERDE DE INDOCIANINA SE ASOCIAN CON LA ACEPTACIN DEL MARGEN INTESTINAL EN LA CIRUGA COLORRECTAL ANTECEDENTES:El verde de indocianina es una herramienta útil en la cirugía colorrectal. Los valores cuantitativos pueden mejorar y estandarizar su aplicación.OBJETIVO:Determinar si las métricas cuantitativas de verde de indocianina se correlacionan con la evaluación subjetiva estándar de perfusión de verde de indocianina en la aceptación o rechazo de los márgenes anastomóticos.DISEÑO:Estudio de cohorte prospectivo de un solo brazo y de una sola institución. Los cirujanos vieron imágenes subjetivas de verde de indocianina, pero no conocían las métricas cuantitativas de verde de indocianina.AJUSTE:Centro académico terciario.PACIENTES:Adultos sometidos a resección intestinal planificada.PRINCIPALES MEDIDAS DE RESULTADO:La perfusión aceptada y la perfusión rechazada del margen intestinal se definieron por la ausencia o presencia de isquemia mediante verde de indocianina subjetiva y la inspección macroscópica. Los resultados primarios fueron los valores cuantitativos de verde de indocianina, la fluorescencia máxima y el tiempo hasta la fluorescencia máxima en la perfusión aceptada en comparación con la rechazada. Los resultados secundarios incluyeron la fluorescencia máxima y el tiempo hasta alcanzar los valores máximos de fluorescencia en la fuga anastomótica.RESULTADOS:Se realizaron 89 evaluaciones de perfusión, comprendiendo 156 segmentos intestinales. Se evaluó subjetivamente que 9 segmentos tenían mala perfusión mediante inspección visual y verde de indocianina subjetiva. La fluorescencia máxima (% de intensidad) mostró una mayor intensidad en la perfusión aceptada [Perfusión aceptada 161% (82-351) vs Perfusión rechazada 63% (10-76); p = 0,03]. De manera similar, el tiempo hasta la fluorescencia máxima (segundos) fue más temprano en la perfusión aceptada en comparación con la rechazada [10 s (1-40) frente a 120 s (90-120); p < 0,01]. Aumento del índice de masa corporal asociado con una fluorescencia máxima más alta. La fuga anastomótica no se correlacionó con la fluorescencia máxima ni con el tiempo hasta la fluorescencia máxima.LIMITACIONES:Estudio de cohorte pequeño, sin poder para medir la asociación entre las mediciones cuantitativas del verde de indocianina y la fuga anastomótica.CONCLUSIÓN:Demostramos que los valores cuantitativos ciegos se correlacionan de manera confiable con la evaluación subjetiva de la perfusión de verde de indocianina. El tiempo hasta la intensidad máxima es una métrica importante en la evaluación de la perfusión. Las métricas cuantitativas de verde de indocianina pueden mejorar la evaluación de la perfusión intestinal intraoperatoria. Los estudios futuros pueden intentar correlacionar los valores cuantitativos de verde de indocianina con la fuga anastomótica. (Traducción-Dr. Yolanda Colorado).
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Affiliation(s)
- Evan D Adams
- Department of General Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Jean F Salem
- Division of Colorectal Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Miguel A Burch
- Department of General Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Phillip R Fleshner
- Department of General Surgery, Cedars-Sinai Medical Center, Los Angeles, California
- Division of Colorectal Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Karen N Zaghiyan
- Department of General Surgery, Cedars-Sinai Medical Center, Los Angeles, California
- Division of Colorectal Surgery, Cedars-Sinai Medical Center, Los Angeles, California
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11
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Jafari MD. Blinded Intraoperative Quantitative Indocyanine Green Metrics: Is This the Solution to the Indocyanine Green Problem? Dis Colon Rectum 2024; 67:483-484. [PMID: 38064225 DOI: 10.1097/dcr.0000000000003180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/04/2024]
Affiliation(s)
- Mehraneh D Jafari
- Section of Colon and Rectal Surgery, Department of Surgery, Weill Cornell Medicine and New York Presbyterian Brooklyn Methodist Hospital, New York, New York
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12
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Dalli J, Joosten JJ, Jindal A, Hardy NP, Camilleri-Brennan J, Andrejevic P, Hompes R, Cahill RA. Impact of standardising indocyanine green fluorescence angiography technique for visual and quantitative interpretation on interuser variability in colorectal surgery. Surg Endosc 2024; 38:1306-1315. [PMID: 38110792 DOI: 10.1007/s00464-023-10564-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 10/24/2023] [Indexed: 12/20/2023]
Abstract
AIM/BACKGROUND Intra-operative colonic perfusion assessment via indocyanine green fluorescence angiography (ICGFA) aims to address malperfusion-related anastomotic complications; however, its interpretation suffers interuser variability (IUV), especially early in ICGFA experience. This work assesses the impact of a protocol developed for both operator-based judgement and computational development on interpretation consistency, focusing on senior surgeons yet to start using ICGFA. METHODS Experienced and junior gastrointestinal surgeons were invited to complete an ICGFA-experience questionnaire. They subsequently interpreted nine operative ICGFA videos regarding perfusion sufficiency of a surgically prepared distal colon during laparoscopic anterior resection by indicating their preferred site of proximal transection using an online annotation platform (mindstamp.com). Six ICGFA videos had been prepared with a clinical standardisation protocol controlling camera and patient positioning of which three each had monochrome near infrared (NIR) and overlay display. Three others were non-standardised controls with synchronous NIR and overlay picture-in-picture display. Differences in transection level between different cohorts were assessed for intraclass correlation coefficient (ICC) via ImageJ and IBM SPSS. RESULTS 58 clinicians (12 ICGFA experts, 46 ICGFA inexperienced of whom 23 were either finished or within one year of finishing training and 23 were junior trainees) participated as per power calculations. 63% felt that ICGFA should be routinely deployed with 57% believing interpretative competence requires 11-50 cases. Transection level concordance was generally good (ICC = 0.869) across all videos and levels of expertise (0.833-0.915). However, poor agreement was evident with the standardised protocol videos for overlay presentation (0.208-0.345). Similarly, poor agreement was seen for the monochrome display (0.392-0.517), except for those who were trained but ICG inexperienced (0.877) although even here agreement was less than with unstandardised videos (0.943). CONCLUSION Colorectal ICGFA acquisition and display standardisation impacts IUV with this specific protocol tending to diminish surgeon interpretation consistency. ICGFA video recording for computational development may require dedicated protocols.
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Affiliation(s)
- Jeffrey Dalli
- UCD Centre for Precision Surgery, Catherine McAuley Centre, University College Dublin, 21 Nelson St, Phibsborough, Dublin 7, D07 KX5K, Ireland
| | - Johanna J Joosten
- Department of Surgery, Amsterdam University Medical Centres, University of Amsterdam, Amsterdam, The Netherlands
- Cancer Centre Amsterdam, Amsterdam, The Netherlands
| | - Abhinav Jindal
- UCD Centre for Precision Surgery, Catherine McAuley Centre, University College Dublin, 21 Nelson St, Phibsborough, Dublin 7, D07 KX5K, Ireland
| | - Niall P Hardy
- UCD Centre for Precision Surgery, Catherine McAuley Centre, University College Dublin, 21 Nelson St, Phibsborough, Dublin 7, D07 KX5K, Ireland
| | - John Camilleri-Brennan
- Forth Valley Royal Hospital, Larbert, Stirlingshire, Scotland, UK
- University of Glasgow, Glasgow, Scotland, UK
| | - Predrag Andrejevic
- Department of Surgery, Mater Dei Hospital, Msida, Malta
- University of Malta, Msida, Malta
| | - Roel Hompes
- Department of Surgery, Amsterdam University Medical Centres, University of Amsterdam, Amsterdam, The Netherlands
- Cancer Centre Amsterdam, Amsterdam, The Netherlands
| | - Ronan A Cahill
- UCD Centre for Precision Surgery, Catherine McAuley Centre, University College Dublin, 21 Nelson St, Phibsborough, Dublin 7, D07 KX5K, Ireland.
- Department of Surgery, Mater Misericordiae University Hospital, Dublin, Ireland.
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13
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Sincavage J, Gulack BC, Zamora IJ. Indocyanine green (ICG) fluorescence-enhanced applications in pediatric surgery. Semin Pediatr Surg 2024; 33:151384. [PMID: 38245991 DOI: 10.1016/j.sempedsurg.2024.151384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
The breadth of pediatric surgical practice and variety of anatomic anomalies that characterize surgical disease in children and neonates require a unique level of operative mastery and versatility. Intraoperative navigation of small, complex, and often abnormal anatomy presents a particular challenge for pediatric surgeons. Clinical experience with fluorescent tissue dye, specifically indocyanine green (ICG), is quickly gaining widespread incorporation into adult surgical practice as a safe, non-toxic means of accurately visualizing tissue perfusion, lymphatic flow, and biliary anatomy to enhance operative speed, safety, and patient outcomes. Experience in pediatric surgery, however, remains limited. ICG-fluorescence guided surgery is poised to address the challenges of pediatric and neonatal operations for a growing breadth of surgical pathology. Fluorescent angiography has permitted intraoperative visualization of colorectal flap perfusion for complex pelvic reconstruction and anastomotic perfusion after esophageal atresia repair, while its hepatic absorption and biliary excretion has made it an excellent agent for delineating the dissection plane in the Kasai portoenterostomy and identifying both primary and metastatic hepatoblastoma lesions. Subcutaneous and intra-lymphatic ICG injection can identify iatrogenic chylous leaks and improved yields in sentinel lymph node biopsies. ICG-guided surgery holds promise for more widespread use in pediatric surgical conditions, and continued evaluation of efficacy will be necessary to better inform clinical practice and identify where to focus and develop this technical resource.
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Affiliation(s)
- John Sincavage
- Division of Pediatric Surgery, Rush University Medical Center, Chicago, IL, United States
| | - Brian C Gulack
- Division of Pediatric Surgery, Rush University Medical Center, Chicago, IL, United States
| | - Irving J Zamora
- Department of Pediatric Surgery, Monroe Carell Jr. Children's Hospital at Vanderbilt, 2200 Children's Way, Nashville, TN 37232, United States.
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14
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Varanese M, Arcieri S, Lauro A, Panetta C, Eberspacher C, Palma R, Mascagni D, Pontone S. Indocyanine Green Tattooing During Colonoscopy as a Guide to Laparoscopic Colorectal Cancer Surgery: A Literature Review. Surg Innov 2024; 31:103-110. [PMID: 37923725 DOI: 10.1177/15533506231209127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2023]
Abstract
BACKGROUND Endoscopic tattooing of colorectal lesions has been performed employing several markers. The indocyanine green (ICG) that uses near infrared fluorescence technology, has been recently adopted in laparoscopic colorectal cancer surgery. This study aims to systematically review the international literature to validate the ICG in laparoscopic colorectal surgery, in order to include the ICG in the therapeutic protocol. METHODS Following AMSTAR 2 criteria, we performed a systematic review to evaluate the use of green indocyanine as a marker for preoperative endoscopic tattooing and for lymph nodes mapping. The study selection was conducted using the PubMed database from January 1989 to July 2022. RESULTS We identified 25 eligible studies. 13 based on fluorescent tumor localization in laparoscopic colorectal surgery using ICG while 12 of them reported the lymphatic road mapping and sentinel node identification by ICG using a near-infrared camera system. One study analyzed both topics. CONCLUSIONS In laparoscopic colorectal cancer surgery indocyanine green can be used to localize fluorescent tumors and mapping fluorescence lymph node. The use of ICG appears to be a valid and safe technique that helps the surgeon to achieve a better oncological radicality. However, the protocols need to be clarified by further studies.
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Affiliation(s)
- Marzia Varanese
- Department of Surgery, Sapienza University of Rome, Rome, Italy
| | - Stefano Arcieri
- Department of Surgery, Sapienza University of Rome, Rome, Italy
| | - Augusto Lauro
- Department of Surgery, Sapienza University of Rome, Rome, Italy
| | | | | | - Rossella Palma
- Department of Surgery, Sapienza University of Rome, Rome, Italy
| | | | - Stefano Pontone
- Department of Surgery, Sapienza University of Rome, Rome, Italy
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15
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Dijkhuis TH, Bijlstra OD, Warmerdam MI, Faber RA, Linders DGJ, Galema HA, Broersen A, Dijkstra J, Kuppen PJK, Vahrmeijer AL, Mieog JSD. Semi-automatic standardized analysis method to objectively evaluate near-infrared fluorescent dyes in image-guided surgery. JOURNAL OF BIOMEDICAL OPTICS 2024; 29:026001. [PMID: 38312853 PMCID: PMC10833575 DOI: 10.1117/1.jbo.29.2.026001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 12/18/2023] [Accepted: 12/20/2023] [Indexed: 02/06/2024]
Abstract
Significance Near-infrared fluorescence imaging still lacks a standardized, objective method to evaluate fluorescent dye efficacy in oncological surgical applications. This results in difficulties in translation between preclinical to clinical studies with fluorescent dyes and in the reproduction of results between studies, which in turn hampers further clinical translation of novel fluorescent dyes. Aim Our aim is to develop and evaluate a semi-automatic standardized method to objectively assess fluorescent signals in resected tissue. Approach A standardized imaging procedure was designed and quantitative analysis methods were developed to evaluate non-targeted and tumor-targeted fluorescent dyes. The developed analysis methods included manual selection of region of interest (ROI) on white light images, automated fluorescence signal ROI selection, and automatic quantitative image analysis. The proposed analysis method was then compared with a conventional analysis method, where fluorescence signal ROIs were manually selected on fluorescence images. Dice similarity coefficients and intraclass correlation coefficients were calculated to determine the inter- and intraobserver variabilities of the ROI selections and the determined signal- and tumor-to-background ratios. Results The proposed non-targeted fluorescent dyes analysis method showed statistically significantly improved variabilities after application on indocyanine green specimens. For specimens with the targeted dye SGM-101, the variability of the background ROI selection was statistically significantly improved by implementing the proposed method. Conclusion Semi-automatic methods for standardized quantitative analysis of fluorescence images were successfully developed and showed promising results to further improve the reproducibility and standardization of clinical studies evaluating fluorescent dyes.
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Affiliation(s)
- Tom H. Dijkhuis
- Leiden University Medical Center, Department of Surgery, Leiden, The Netherlands
| | - Okker D. Bijlstra
- Leiden University Medical Center, Department of Surgery, Leiden, The Netherlands
- Amsterdam University Medical Center, Cancer Center Amsterdam, Department of Surgery, Amsterdam, The Netherlands
| | - Mats I. Warmerdam
- Leiden University Medical Center, Department of Surgery, Leiden, The Netherlands
- Centre of Human Drug Research, Leiden, The Netherlands
| | - Robin A. Faber
- Leiden University Medical Center, Department of Surgery, Leiden, The Netherlands
| | - Daan G. J. Linders
- Leiden University Medical Center, Department of Surgery, Leiden, The Netherlands
| | - Hidde A. Galema
- Erasmus MC Cancer Institute, Department of Surgical Oncology and Gastrointestinal Surgery, Rotterdam, The Netherlands
| | - Alexander Broersen
- Leiden University Medical Center, Department of Radiology, Leiden, The Netherlands
| | - Jouke Dijkstra
- Leiden University Medical Center, Department of Radiology, Leiden, The Netherlands
| | - Peter J. K. Kuppen
- Leiden University Medical Center, Department of Surgery, Leiden, The Netherlands
| | | | - Jan Sven David Mieog
- Leiden University Medical Center, Department of Surgery, Leiden, The Netherlands
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16
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Kashchenko VA, Dzhemilova ZN, Zavrazhnov AA, Ratnikov VA, Bogatikov AA, Petrova VV, Guschina OB. [Prospects of qualitative and quantitative assessment of bowel perfusion by fluorescent angiography with indocyanine green in colorectal surgery. First experience]. Khirurgiia (Mosk) 2024:82-92. [PMID: 38634589 DOI: 10.17116/hirurgia202404182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
OBJECTIVE To assess the possibilities of fluorescent detection system in qualitative and quantitative assessment of bowel perfusion in colorectal resections. MATERIAL AND METHODS From May to August 2023, a single-center pilot cross-sectional unblinded study with inclusion of 18 patients with colon cancer (of left-sided - 12, of right-sided - 6, mean age - 72.9 years, m/w - 61/39%) was conducted. All patients underwent laparoscopic colorectal resections with extracorporeal stage of bowel transection. The evaluation of the bowel's ICG perfusion was conducted to assist in decision making about the level of its resection. Qualitative (visual) assessment was carried out in all 18 patients, in one patient twice, quantitative assessment of perfusion was conducted in 8 patients (left-sided resections - 6, right-sided hemicolectomy - 2). The qualitative evaluation was performed in real time on the analysis of the color gradient. The time parameters and fluorescence intensity at different level proximally and distally from the resection line were quantitatively estimated: Tstart - time of occurrence of minimal fluorescence in the areas of interest after the ICG injection (sec); Tmax - time to achieve maximum fluorescence intensity after the ICG injection (sec); Tmax-start - time interval between Tstart and Tmax, Imax - level of maximum fluorescence intensity (I). RESULTS Visual qualitative analysis of fluorescence revealed unsatisfactory perfusion characteristics (black, dark-gray color) in the area planned by the surgeon to anastomose the bowel in 3 of 18 patients (16.6%). When analyzing the quantitative data of this group of patients, there was a 2-6-fold decrease in Imax level, and one patient had an increase in Tmax-start at the level of intended resection compared to the bowel's sections in the favorable zone. In all cases, the final bowel transection was conducted in the area of good perfusion. There was no clinical evidence of anastomotic dehiscence in the study group. CONCLUSION Intraoperative evaluation of bowel perfusion is an important component of safe anastomosis formation in colorectal surgery. The use of ICG-FA allows to conduct qualitative and quantitative assessment of tissue perfusion of the bowel in order to assist in making intraoperative decisions. Quantitative evaluation of fluorescence provides more objective information about perfusion parameters. Imax and Tmax-start are the most promising quantitative indicators of local bowel's perfusion. Nevertheless, the precise interpretation of the quantitative indicators of ICG perfusion needs to be clarified.
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Affiliation(s)
- V A Kashchenko
- North-Western District Scientific and Clinical Center named after L.G. Sokolov of the Federal Medical-Biological Agency, St. Petersburg, Russia
- Saint Petersburg State University, St. Petersburg, Russia
- High Technology Clinic «Beloostrov» (MMC), Leningrad Region, Russia
| | - Z N Dzhemilova
- National Medical Research Center for Endocrinology, Moscow, Russia
| | - A A Zavrazhnov
- High Technology Clinic «Beloostrov» (MMC), Leningrad Region, Russia
| | - V A Ratnikov
- North-Western District Scientific and Clinical Center named after L.G. Sokolov of the Federal Medical-Biological Agency, St. Petersburg, Russia
- Saint Petersburg State University, St. Petersburg, Russia
| | - A A Bogatikov
- North-Western District Scientific and Clinical Center named after L.G. Sokolov of the Federal Medical-Biological Agency, St. Petersburg, Russia
- Saint Petersburg State University, St. Petersburg, Russia
| | - V V Petrova
- Saint Petersburg State University, St. Petersburg, Russia
| | - O B Guschina
- North-Western District Scientific and Clinical Center named after L.G. Sokolov of the Federal Medical-Biological Agency, St. Petersburg, Russia
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Brillantino A, Skokowski J, Ciarleglio FA, Vashist Y, Grillo M, Antropoli C, Herrera Kok JH, Mosca V, De Luca R, Polom K, Talento P, Marano L. Inferior Mesenteric Artery Ligation Level in Rectal Cancer Surgery beyond Conventions: A Review. Cancers (Basel) 2023; 16:72. [PMID: 38201499 PMCID: PMC10777981 DOI: 10.3390/cancers16010072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 12/13/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024] Open
Abstract
Within the intricate field of rectal cancer surgery, the contentious debate over the optimal level of ligation of the inferior mesenteric artery (IMA) persists as an ongoing discussion, influencing surgical approaches and patient outcomes. This narrative review incorporates historical perspectives, technical considerations, and functional as well as oncological outcomes, addressing key questions related to anastomotic leakage risks, genitourinary function, and oncological concerns, providing a more critical understanding of the well-known inconclusive evidence. Beyond the dichotomy of high versus low tie, it navigates the complexities of colorectal cancer surgery with a fresh perspective, posing a transformative question: "Is low tie ligation truly reproducible?" Considering a multidimensional approach that enhances patient outcomes by integrating the surgeon, patient, technique, and technology, instead of a rigid and categorical statement, we argued that a balanced response to this challenging question may require compromise.
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Affiliation(s)
- Antonio Brillantino
- Department of Surgery, “A. Cardarelli” Hospital, Via A. Cardarelli 9, 80131 Naples, Italy; (A.B.); (M.G.); (C.A.)
| | - Jaroslaw Skokowski
- Department of Medicine, Academy of Applied Medical and Social Sciences—AMiSNS: Akademia Medycznych I Spolecznych Nauk Stosowanych—2 Lotnicza Street, 82-300 Elbląg, Poland; (J.S.); (K.P.)
- Department of General Surgery and Surgical Oncology, “Saint Wojciech” Hospital, “Nicolaus Copernicus” Health Center, Jana Pawła II 50, 80-462 Gdańsk, Poland
| | - Francesco A. Ciarleglio
- Department of General Surgery and Hepato-Pancreato-Biliary (HPB) Unit—APSS, 38121 Trento, Italy;
| | - Yogesh Vashist
- Department Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia;
| | - Maurizio Grillo
- Department of Surgery, “A. Cardarelli” Hospital, Via A. Cardarelli 9, 80131 Naples, Italy; (A.B.); (M.G.); (C.A.)
| | - Carmine Antropoli
- Department of Surgery, “A. Cardarelli” Hospital, Via A. Cardarelli 9, 80131 Naples, Italy; (A.B.); (M.G.); (C.A.)
| | - Johnn Henry Herrera Kok
- Department of General and Digestive Surgery—Upper GI Unit, University Hospital of León, 24008 León, Spain;
| | - Vinicio Mosca
- Department of Advanced Medical and Surgical Sciences, Università degli Studi della Campania “Luigi Vanvitelli”, 80138 Napoli, Italy;
| | - Raffaele De Luca
- Department of Surgical Oncology, IRCCS Istituto Tumori “Giovanni Paolo II”, 70124 Bari, Italy;
| | - Karol Polom
- Department of Medicine, Academy of Applied Medical and Social Sciences—AMiSNS: Akademia Medycznych I Spolecznych Nauk Stosowanych—2 Lotnicza Street, 82-300 Elbląg, Poland; (J.S.); (K.P.)
- Department of Gastrointestinal Surgical Oncology, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland
| | - Pasquale Talento
- Department of Surgery, Pelvic Floor Center, AUSL-IRCCS Reggio Emilia, 42122 Reggio Emilia, Italy;
| | - Luigi Marano
- Department of Medicine, Academy of Applied Medical and Social Sciences—AMiSNS: Akademia Medycznych I Spolecznych Nauk Stosowanych—2 Lotnicza Street, 82-300 Elbląg, Poland; (J.S.); (K.P.)
- Department of General Surgery and Surgical Oncology, “Saint Wojciech” Hospital, “Nicolaus Copernicus” Health Center, Jana Pawła II 50, 80-462 Gdańsk, Poland
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18
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Jung JM, Park IJ, Park EJ, Son GM. Fluorescence-guided colorectal surgery: applications, clinical results, and protocols. Ann Surg Treat Res 2023; 105:252-263. [PMID: 38023438 PMCID: PMC10648611 DOI: 10.4174/astr.2023.105.5.252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 12/01/2023] Open
Abstract
In recent years, the rise of minimally invasive surgery has driven the development of surgical devices. Indocyanine green (ICG) fluorescence imaging is receiving increased attention in colorectal surgery for improved intraoperative visualization and decision-making. ICG, approved by the U.S. Food and Drug Administration in 1959, rapidly binds to plasma proteins and is primarily intravascular. ICG absorption of near-infrared light (750-800 nm) and emission as fluorescence (830 nm) when bound to tissue proteins enhances deep tissue visualization. Applications include assessing anastomotic perfusion, identifying sentinel lymph nodes, and detecting colorectal cancer metastasis. However, standardized protocols and research on clinical outcomes remain limited. This study explores ICG's role, advantages, disadvantages, and potential clinical impact in colorectal surgery.
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Affiliation(s)
- Jin-Min Jung
- Division of Colon and Rectal Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - In Ja Park
- Division of Colon and Rectal Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Eun Jung Park
- Division of Colon and Rectal Surgery, Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Gyung Mo Son
- Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
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Watanabe J, Takemasa I, Kotake M, Noura S, Kimura K, Suwa H, Tei M, Takano Y, Munakata K, Matoba S, Yamagishi S, Yasui M, Kato T, Ishibe A, Shiozawa M, Ishii Y, Yabuno T, Nitta T, Saito S, Saigusa Y, Watanabe M. Blood Perfusion Assessment by Indocyanine Green Fluorescence Imaging for Minimally Invasive Rectal Cancer Surgery (EssentiAL trial): A Randomized Clinical Trial. Ann Surg 2023; 278:e688-e694. [PMID: 37218517 PMCID: PMC10481925 DOI: 10.1097/sla.0000000000005907] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
OBJECTIVE The aim of the present randomized controlled trial was to evaluate the superiority of indocyanine green fluorescence imaging (ICG-FI) in reducing the rate of anastomotic leakage in minimally invasive rectal cancer surgery. BACKGROUND The role of ICG-FI in anastomotic leakage in minimally invasive rectal cancer surgery is controversial according to the published literature. METHODS This randomized, open-label, phase 3, trial was performed at 41 hospitals in Japan. Patients with clinically stage 0-III rectal carcinoma less than 12 cm from the anal verge, scheduled for minimally invasive sphincter-preserving surgery were preoperatively randomly assigned to receive a blood flow evaluation by ICG-FI (ICG+ group) or no blood flow evaluation by ICG-FI (ICG- group). The primary endpoint was the anastomotic leakage rate (grade A+B+C, expected reduction rate of 6%) analyzed in the modified intention-to-treat population. RESULTS Between December 2018 and February 2021, a total of 850 patients were enrolled and randomized. After the exclusion of 11 patients, 839 were subject to the modified intention-to-treat population (422 in the ICG+ group and 417 in the ICG- group). The rate of anastomotic leakage (grade A+B+C) was significantly lower in the ICG+ group (7.6%) than in the ICG- group (11.8%) (relative risk, 0.645; 95% confidence interval 0.422-0.987; P =0.041). The rate of anastomotic leakage (grade B+C) was 4.7% in the ICG+ group and 8.2% in the ICG- group ( P =0.044), and the respective reoperation rates were 0.5% and 2.4% ( P =0.021). CONCLUSIONS Although the actual reduction rate of anastomotic leakage in the ICG+ group was lower than the expected reduction rate and ICG-FI was not superior to white light, ICG-FI significantly reduced the anastomotic leakage rate by 4.2%.
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Affiliation(s)
- Jun Watanabe
- Department of Surgery, Gastroenterological Center, Yokohama City University Medical Center, Minami-ku, Yokohama, Japan
| | - Ichiro Takemasa
- Department of Surgery, Surgical Oncology and Science, Sapporo Medical University, Chuo-ku, Sapporo, Japan
| | - Masanori Kotake
- Department of Surgery, Kouseiren Takaoka Hospital, Takaoka, Toyama, Japan
| | - Shingo Noura
- Department of Gastroenterological Surgery, Toyonaka Municipal Hospital, Toyonaka, Osaka, Japan
| | - Kei Kimura
- Department of Lower Gastroenterological Surgery, Hyogo College of Medicine, Nishinomiya, Japan
| | - Hirokazu Suwa
- Department of Surgery, Yokosuka Kyosai Hospital, Nakahara-ku, Kawasaki, Kanagawa, Japan
| | - Mitsuyoshi Tei
- Department of Surgery, Osaka Rosai Hospital, Sakai, Osaka, Japan
| | - Yoshinao Takano
- Department of Surgery, Southern TOHOKU Research Institute for Neuroscience, Southern TOHOKU General Hospital, Yatsuyamada, Koriyama, Japan
| | - Koji Munakata
- Department of Gastroenterological Surgery, Ikeda City Hospital, Ikeda, Osaka, Japan
| | - Shuichiro Matoba
- Department of Gastroenterological Surgery, Toranomon Hospital, Minato City, Tokyo, Japan
| | - Sigeru Yamagishi
- Department of Surgery, Fujisawa City Hospital, Fujisawa, Kanagawa, Japan
| | - Masayoshi Yasui
- Department of Gastroenterological Surgery, Osaka International Cancer Institute, Chuo-ku, Osaka, Japan
| | - Takeshi Kato
- Department of Surgery, National Hospital Organization Osaka National Hospital, Chuo Ward, Osaka, Japan
| | - Atsushi Ishibe
- Department of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Manabu Shiozawa
- Department of Surgery, Kanagawa Cancer Center, Yokohama, Kanagawa, Japan
| | - Yoshiyuki Ishii
- Department of Surgery, Kitasato University Kitasato Institute Hospital, Minato City, Tokyo, Japan
| | - Taichi Yabuno
- Department of Surgery, Yokohama Municipal Citizen’s Hospital, Yokohama, Kanagawa, Japan
| | - Toshikatsu Nitta
- Division of Surgery Gastroenterological Center, Medico Shunju Shiroyama Hospital, Osaka, Japan
| | - Shuji Saito
- Division of Surgery, Gastrointestinal Center, Yokohama Shin-Midori General Hospital, Yokohama, Japan
| | - Yusuke Saigusa
- Department of Biostatistics, Yokohama City University School of Medicine, Yokohama, Japan
| | - Masahiko Watanabe
- Department of Surgery, Kitasato University Kitasato Institute Hospital, Minato City, Tokyo, Japan
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Lim ZY, Mohan S, Balasubramaniam S, Ahmed S, Siew CCH, Shelat VG. Indocyanine green dye and its application in gastrointestinal surgery: The future is bright green. World J Gastrointest Surg 2023; 15:1841-1857. [PMID: 37901741 PMCID: PMC10600780 DOI: 10.4240/wjgs.v15.i9.1841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 07/17/2023] [Accepted: 07/31/2023] [Indexed: 09/21/2023] Open
Abstract
Indocyanine green (ICG) is a water-soluble fluorescent dye that is minimally toxic and widely used in gastrointestinal surgery. ICG facilitates anatomical identification of structures (e.g., ureters), assessment of lymph nodes, biliary mapping, organ perfusion and anastomosis assessment, and aids in determining the adequacy of oncological margins. In addition, ICG can be conjugated to artificially created antibodies for tumour markers, such as carcinoembryonic antigen for colorectal, breast, lung, and gastric cancer, prostate-specific antigen for prostate cancer, and cancer antigen 125 for ovarian cancer. Although ICG has shown promising results, the optimization of patient factors, dye factors, equipment, and the method of assessing fluorescence intensity could further enhance its utility. This review summarizes the clinical application of ICG in gastrointestinal surgery and discusses the emergence of novel dyes such as ZW-800 and VM678 that have demonstrated appropriate pharmacokinetic properties and improved target-to-background ratios in animal studies. With the emergence of robotic technology and the increasing reporting of ICG utility, a comprehensive review of clinical application of ICG in gastrointestinal surgery is timely and this review serves that aim.
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Affiliation(s)
- Zavier Yongxuan Lim
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | - Swetha Mohan
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | | | - Saleem Ahmed
- Department of General Surgery, Tan Tock Seng Hospital, Singapore 308433, Singapore
| | | | - Vishal G Shelat
- Department of General Surgery, Tan Tock Seng Hospital, Singapore 308433, Singapore
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21
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Fransvea P, Fico V, Puccioni C, D'Agostino L, Costa G, Biondi A, Brisinda G, Sganga G. Application of fluorescence-guided surgery in the acute care setting: a systematic literature review. Langenbecks Arch Surg 2023; 408:375. [PMID: 37743419 DOI: 10.1007/s00423-023-03109-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 09/14/2023] [Indexed: 09/26/2023]
Abstract
PURPOSE Fluorescence-based imaging has found application in several fields of elective surgery, but there is still a lack of evidence in the literature about its use in emergency setting. The present review critically summarizes currently available applications and limitations of indocyanine green (ICG) fluorescence in abdominal emergencies including acute cholecystitis, mesenteric ischemia, and trauma surgery. METHODS A systematic review was performed according to the PRISMA statement identifying articles about the use of ICG fluorescence in the management of the most common general surgery emergency. Only studies focusing on the use of ICG fluorescence for the management of acute surgical conditions in adults were included. RESULTS Thirty-six articles were considered for qualitative analysis. The most frequent disease was occlusive or non-occlusive mesenteric ischemia followed by acute cholecystitis. Benefits from using ICG for acute cholecystitis were reported in 48% of cases (clear identification of biliary structures and a safer surgical procedure). In one hundred and twenty cases that concerned the use of ICG for occlusive or non-occlusive mesenteric ischemia, ICG injection led to a modification of the surgical decision in 44 patients (36.6%). Three studies evaluated the use of ICG in trauma patients to assess the viability of bowel or parenchymatous organs in abdominal trauma, to evaluate the perfusion-related tissue impairment in extremity or craniofacial trauma, and to reassess the efficacy of surgical procedures performed in terms of vascularization. ICG injection led to a modification of the surgical decision in 50 patients (23.9%). CONCLUSION ICG fluorescence is a safe and feasible tool also in an emergency setting. There is increasing evidence that the use of ICG fluorescence during abdominal surgery could facilitate intra-operative decision-making and improve patient outcomes, even in the field of emergency surgery.
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Affiliation(s)
- Pietro Fransvea
- UOC Chirurgia d'Urgenza E del Trauma, Fondazione Policlinico Universitario A Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy.
- Department of Medical and Surgical Sciences, Università Cattolica del Sacro Cuore, 00168, Rome, Italy.
| | - Valeria Fico
- UOC Chirurgia d'Urgenza E del Trauma, Fondazione Policlinico Universitario A Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy
| | - Caterina Puccioni
- Department of Medical and Surgical Sciences, Università Cattolica del Sacro Cuore, 00168, Rome, Italy
| | - Luca D'Agostino
- Department of Medical and Surgical Sciences, Università Cattolica del Sacro Cuore, 00168, Rome, Italy
| | - Gianluca Costa
- Colorectal Surgery Clinical and Research Unit Surgery Center, Fondazione Policlinico Universitario Campus Bio-Medico, University Campus Bio-Medico of Rome, Rome, Italy
| | - Alberto Biondi
- Department of Medical and Surgical Sciences, Università Cattolica del Sacro Cuore, 00168, Rome, Italy
- General Surgery Unit, Fondazione Policlinico Universitario A Gemelli IRCCS, 00168, Rome, Italy
| | - Giuseppe Brisinda
- UOC Chirurgia d'Urgenza E del Trauma, Fondazione Policlinico Universitario A Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy
- Department of Medical and Surgical Sciences, Università Cattolica del Sacro Cuore, 00168, Rome, Italy
| | - Gabriele Sganga
- UOC Chirurgia d'Urgenza E del Trauma, Fondazione Policlinico Universitario A Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy
- Department of Medical and Surgical Sciences, Università Cattolica del Sacro Cuore, 00168, Rome, Italy
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22
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Plöger R, Condic M, Ralser DJ, Plöger HM, Egger EK, Otten LA, Mustea A. Intraoperative Utilization of Indocyanine Green (ICG) Dye for the Assessment of Ovarian Perfusion-Case Report and Review of the Literature. J Clin Med 2023; 12:5923. [PMID: 37762865 PMCID: PMC10531937 DOI: 10.3390/jcm12185923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/03/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
The assessment of ovarian perfusion after detorsion is crucial in the surgical management of patients with ovarian torsion. In current routine clinical practice, the surgical decision (preservation of the ovary versus oophorectomy) is based on the subjective impression of the surgeon. Intraoperative indocyanine green (ICG) angiography has been shown to sufficiently reflect tissue perfusion with a potential impact on the surgical procedure. Currently, there are only sparse data available on the utilization of ICG in the surgical treatment of ovarian torsion. Here, we describe the successful intraoperative use of ICG in a 17-year-old female patient with ovarian torsion who underwent ovary-preserving surgery. Further, a systematic literature review was performed. Based on the data available to date, the use of ICG in the surgical treatment of ovarian torsion is feasible and safe. The extent to which this might reduce the necessity for oophorectomy has to be evaluated in further investigations.
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Affiliation(s)
- Ruben Plöger
- Department of Gynecology and Gynecological Oncology, University Hospital Bonn, 53127 Bonn, Germany; (M.C.); (D.J.R.); (E.K.E.); (L.A.O.); (A.M.)
| | - Mateja Condic
- Department of Gynecology and Gynecological Oncology, University Hospital Bonn, 53127 Bonn, Germany; (M.C.); (D.J.R.); (E.K.E.); (L.A.O.); (A.M.)
| | - Damian J. Ralser
- Department of Gynecology and Gynecological Oncology, University Hospital Bonn, 53127 Bonn, Germany; (M.C.); (D.J.R.); (E.K.E.); (L.A.O.); (A.M.)
| | - Hannah M. Plöger
- Department of Paediatrics, University Hospital Bonn, 53127 Bonn, Germany;
| | - Eva K. Egger
- Department of Gynecology and Gynecological Oncology, University Hospital Bonn, 53127 Bonn, Germany; (M.C.); (D.J.R.); (E.K.E.); (L.A.O.); (A.M.)
| | - Lucia A. Otten
- Department of Gynecology and Gynecological Oncology, University Hospital Bonn, 53127 Bonn, Germany; (M.C.); (D.J.R.); (E.K.E.); (L.A.O.); (A.M.)
| | - Alexander Mustea
- Department of Gynecology and Gynecological Oncology, University Hospital Bonn, 53127 Bonn, Germany; (M.C.); (D.J.R.); (E.K.E.); (L.A.O.); (A.M.)
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23
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Faber RA, Tange FP, Galema HA, Zwaan TC, Holman FA, Peeters KCMJ, Tanis PJ, Verhoef C, Burggraaf J, Mieog JSD, Hutteman M, Keereweer S, Vahrmeijer AL, van der Vorst JR, Hilling DE. Quantification of indocyanine green near-infrared fluorescence bowel perfusion assessment in colorectal surgery. Surg Endosc 2023; 37:6824-6833. [PMID: 37286750 PMCID: PMC10462565 DOI: 10.1007/s00464-023-10140-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 05/16/2023] [Indexed: 06/09/2023]
Abstract
BACKGROUND Indocyanine green near-infrared fluorescence bowel perfusion assessment has shown its potential benefit in preventing anastomotic leakage. However, the surgeon's subjective visual interpretation of the fluorescence signal limits the validity and reproducibility of the technique. Therefore, this study aimed to identify objective quantified bowel perfusion patterns in patients undergoing colorectal surgery using a standardized imaging protocol. METHOD A standardized fluorescence video was recorded. Postoperatively, the fluorescence videos were quantified by drawing contiguous region of interests (ROIs) on the bowel. For each ROI, a time-intensity curve was plotted from which perfusion parameters (n = 10) were derived and analyzed. Furthermore, the inter-observer agreement of the surgeon's subjective interpretation of the fluorescence signal was assessed. RESULTS Twenty patients who underwent colorectal surgery were included in the study. Based on the quantified time-intensity curves, three different perfusion patterns were identified. Similar for both the ileum and colon, perfusion pattern 1 had a steep inflow that reached its peak fluorescence intensity rapidly, followed by a steep outflow. Perfusion pattern 2 had a relatively flat outflow slope immediately followed by its plateau phase. Perfusion pattern 3 only reached its peak fluorescence intensity after 3 min with a slow inflow gradient preceding it. The inter-observer agreement was poor-moderate (Intraclass Correlation Coefficient (ICC): 0.378, 95% CI 0.210-0.579). CONCLUSION This study showed that quantification of bowel perfusion is a feasible method to differentiate between different perfusion patterns. In addition, the poor-moderate inter-observer agreement of the subjective interpretation of the fluorescence signal between surgeons emphasizes the need for objective quantification.
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Affiliation(s)
- Robin A Faber
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Floris P Tange
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Hidde A Galema
- Department of Surgical Oncology and Gastrointestinal Surgery, Erasmus MC Cancer Institute, Doctor Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
- Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus MC Cancer Institute, Doctor Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
| | - Thomas C Zwaan
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Fabian A Holman
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Koen C M J Peeters
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Pieter J Tanis
- Department of Surgical Oncology and Gastrointestinal Surgery, Erasmus MC Cancer Institute, Doctor Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
| | - Cornelis Verhoef
- Department of Surgical Oncology and Gastrointestinal Surgery, Erasmus MC Cancer Institute, Doctor Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
| | - Jacobus Burggraaf
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
- Centre of Human Drug Research, Zernikedreef 8, 2333 CL, Leiden, The Netherlands
| | - J Sven D Mieog
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Merlijn Hutteman
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
- Department of Surgery, Radboud University Medical Center, Geert Grooteplein Zuid 10, 6525 GA, Nijmegen, The Netherlands
| | - Stijn Keereweer
- Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus MC Cancer Institute, Doctor Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
| | - Alexander L Vahrmeijer
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Joost R van der Vorst
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Denise E Hilling
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands.
- Department of Surgical Oncology and Gastrointestinal Surgery, Erasmus MC Cancer Institute, Doctor Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands.
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24
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Zötterman J, Tesselaar E, Elawa S, Farnebo S. Correlation between Indocyanine Green Fluorescence Angiography and Laser Speckle Contrast Imaging in a Flap Model. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2023; 11:e5187. [PMID: 38152716 PMCID: PMC10752484 DOI: 10.1097/gox.0000000000005187] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 06/14/2023] [Indexed: 12/29/2023]
Abstract
Background Indocyanine green fluorescence angiography (ICG-FA) is used to assess tissue intraoperatively in reconstructive surgery. This requires an intra-venous dye injection for each assessment. This is not necessary in laser speckle contrast imaging (LSCI); therefore, this method may be better suited for tissue evaluation. To determine this, we compared the two methods in a porcine flap model. Methods One random and one pedicled flap were raised on each buttock of six animals. They were assessed with LSCI at baseline, when raised (T0), at 30 minutes (T30) and with ICG-FA at T0 and T30. Regions of interest (ROI) were chosen along the flap axis. Perfusion, measured as perfusion units (PU) in the LSCI assessment and pixel-intensity for the ICG-FA video uptake, was calculated in the ROI. Correlation was calculated between PU and pixel-intensity measured as time to peak (TTP) and area under curve for 60 seconds (AUC60). Results Correlation between LSCI and AUC60 for the ICG-FA in corresponding ROI could be seen in all flaps at all time points. The correlation was higher for T0 (r=0.7 for random flap and r=0.6 for pedicled flap) than for T30 (r=0.57 for random flap and r=0.59 for pedicled flap). Even higher correlation could be seen PU and TTP (T0: random flap r=-0.8 and pedicled flap r=0.76. T30: random flap r=-0.8 and pedicled flap r=0.71). Conclusion There is a correlation between PU from LSCI and TTP and AUC60 for ICG-FA, indicating that LSCI could be considered for intraoperative tissue assessment.
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Affiliation(s)
- Johan Zötterman
- From the Department of Hand and Plastic Surgery and Burns and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Erik Tesselaar
- Department of Medical Radiation Physics and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Sherif Elawa
- From the Department of Hand and Plastic Surgery and Burns and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Simon Farnebo
- From the Department of Hand and Plastic Surgery and Burns and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
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25
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Gach T, Bogacki P, Orzeszko Z, Markowska B, Krzak JM, Szura M, Solecki R, Szura M. Fluorescent ICG angiography in laparoscopic rectal resection - a randomized controlled trial. Preliminary report. Wideochir Inne Tech Maloinwazyjne 2023; 18:410-417. [PMID: 37868286 PMCID: PMC10585458 DOI: 10.5114/wiitm.2023.129545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 05/09/2023] [Indexed: 10/24/2023] Open
Abstract
Introduction Anastomotic leakage is one of the most dangerous complications after rectal surgery. It can cause systemic complications, reduce the quality of life and worsen the results of oncological treatment. One of the causes of anastomotic leak is insufficient blood supply to the anastomosis. Intraoperative infrared angiography with indocyanine green (ICG) is expected to improve the assessment of intestinal perfusion and thus prevent anastomotic leakage. Aim To present the results of the use of ICG intraoperative angiography during rectal surgery in the prevention of anastomotic leakage. Material and methods The study included 76 patients undergoing rectal cancer surgery. Patients were randomized to 2 groups: Group I - 41 patients with ICG intraoperative angiography; and Group II - 35 patients without ICG imaging. Anastomotic leak, length of hospitalization, and complication rate were compared. Results Group I patients received intravenous ICG before the anastomosis. Average time of intestinal wall contrasting was 42 s (22-65 s). Average ICG procedure time was 4 min (3.2% of total time of surgery). Three (7.3%) patients after angiography revealed intestinal ischemia requiring widened resection. No anastomotic leak was found post-operatively, and no side effects were observed after administration of ICG. In group II, 3 (8.6%) anastomotic leakages were diagnosed, 2 of which required reoperation. Conclusions Intraoperative angiography with ICG in near-infrared light is a safe and effective method of assessing intestinal perfusion. ICG angiography may change the surgical plan and reduce the risk of anastomotic leakage. It is necessary to continue the study until the assumed number of patients is reached.
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Affiliation(s)
- Tomasz Gach
- Department of General and Oncological Surgery, Hospital of Brothers Hospitallers of St. John of God, Krakow, Poland
- Department of Surgery, Faculty of Health Sciences, Jagiellonian University Medical College, Krakow, Poland
| | - Paweł Bogacki
- Department of General and Oncological Surgery, Hospital of Brothers Hospitallers of St. John of God, Krakow, Poland
- Department of Surgery, Faculty of Health Sciences, Jagiellonian University Medical College, Krakow, Poland
| | - Zofia Orzeszko
- Department of General and Oncological Surgery, Hospital of Brothers Hospitallers of St. John of God, Krakow, Poland
| | - Beata Markowska
- Department of General and Oncological Surgery, Hospital of Brothers Hospitallers of St. John of God, Krakow, Poland
- Department of Surgery, Faculty of Health Sciences, Jagiellonian University Medical College, Krakow, Poland
| | - Jan M. Krzak
- Department of General Surgery, South Jutland Hospital, Aabenraa, Denmark
| | - Maciej Szura
- Department of Surgery, Faculty of Health Sciences, Jagiellonian University Medical College, Krakow, Poland
| | - Rafał Solecki
- Department of General and Oncological Surgery, Hospital of Brothers Hospitallers of St. John of God, Krakow, Poland
- Department of Surgery, Faculty of Health Sciences, Jagiellonian University Medical College, Krakow, Poland
| | - Mirosław Szura
- Department of General and Oncological Surgery, Hospital of Brothers Hospitallers of St. John of God, Krakow, Poland
- Department of Surgery, Faculty of Health Sciences, Jagiellonian University Medical College, Krakow, Poland
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26
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Mehrotra S, Liu YZ, Nwaiwu CA, Buharin VE, Stolyarov R, Schwaitzberg SD, Kalady MF, Kim PCW. Real-time quantification of bowel perfusion using Laparoscopic Laser Speckle Contrast Imaging (LSCI) in a porcine model. BMC Surg 2023; 23:261. [PMID: 37649010 PMCID: PMC10468884 DOI: 10.1186/s12893-023-02161-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 08/19/2023] [Indexed: 09/01/2023] Open
Abstract
BACKGROUND/PURPOSE Real-time quantification of tissue perfusion can improve intraoperative surgical decision making. Here we demonstrate the utility of Laser Speckle Contrast Imaging as an intra-operative tool that quantifies real-time regional differences in intestinal perfusion and distinguishes ischemic changes resulting from arterial/venous obstruction. METHODS Porcine models (n = 3) consisted of selectively devascularized small bowel loops that were used to measure the perfusion responses under conditions of control/no vascular occlusion, arterial inflow occlusion, and venous outflow occlusion using laser speckle imaging and indocyanine green fluoroscopy. Laser Speckle was also used to assess perfusion differences between small bowel antimesenteric-antimesenteric and mesenteric-mesenteric anastomoses. Perfusion quantification was measured in relative perfusion units calculated from the laser speckle perfusion heatmap. RESULTS Laser Speckle distinguished between visually identified perfused, watershed, and ischemic intestinal segments with both color heatmap and quantification (p < .00001). It detected a continuous gradient of relative intestinal perfusion as a function of distance from the stapled ischemic bowel edge. Strong positive linear correlation between relative perfusion units and changes in mean arterial pressure resulting from both arterial (R2 = .96/.79) and venous pressure changes (R2 = .86/.96) was observed. Furthermore, Laser Speckle showed that the antimesenteric anastomosis had a higher perfusion than mesenteric anastomosis (p < 0.01). CONCLUSIONS Laser Speckle Contrast Imaging provides objective, quantifiable tissue perfusion information in both color heatmap and relative numerical units. Laser Speckle can detect spatial/temporal differences in perfusion between antimesenteric and mesenteric borders of a bowel segment and precisely detect perfusion changes induced by progressive arterial/venous occlusions in real-time.
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Affiliation(s)
- Saloni Mehrotra
- Department of Surgery, University at Buffalo, Buffalo, NY, USA
- Activ Surgical Inc., Boston, MA, USA
| | - Yao Z Liu
- Activ Surgical Inc., Boston, MA, USA
- Department of Surgery, Brown University, Providence, Rhode Island, USA
| | - Chibueze A Nwaiwu
- Activ Surgical Inc., Boston, MA, USA
- Department of Surgery, Brown University, Providence, Rhode Island, USA
| | | | | | | | - Matthew F Kalady
- Department of Surgery, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Peter C W Kim
- Activ Surgical Inc., Boston, MA, USA.
- Department of Surgery, Brown University, Providence, Rhode Island, USA.
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Simion L, Ionescu S, Chitoran E, Rotaru V, Cirimbei C, Madge OL, Nicolescu AC, Tanase B, Dicu-Andreescu IG, Dinu DM, Luca DC, Stanculeanu DL, Gheorghe AS, Zob D, Marincas M. Indocyanine Green (ICG) and Colorectal Surgery: A Literature Review on Qualitative and Quantitative Methods of Usage. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1530. [PMID: 37763651 PMCID: PMC10536016 DOI: 10.3390/medicina59091530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/02/2023] [Accepted: 08/18/2023] [Indexed: 09/29/2023]
Abstract
Background: Due to its many benefits, indocyanine green (ICG) has gained progressive popularity in operating rooms (ORs) globally. This literature review examines its qualitative and quantitative usage in surgical treatment. Method: Relevant terms were searched in five international databases (1. Pubmed, 2. Sciencedirect, 3. Scopus, 4. Oxfordjournals, 5. Reaxys) for a comprehensive literature review. The main benefits of using ICG in colorectal surgery are: intraoperative fluorescence angiography; fluorescence-guided lymph node involvement detection and the sentinel technique; the fluorescent emphasis of a minute liver tumour, counting just 200 tumour cells; facilitation of fistula diagnosis; and tumour tattooing. This methodology can also be used with quantitative characteristics such as maximum intensity, relative maximum intensity, and in-flow parameters such as time-to-peak, slope, and t1/2max. This article concludes that fluorescence surgery with ICG and near-infrared (NIR) light is a relatively new technology that improves anatomical and functional information, allowing more comprehensive and safer tumour removal and the preservation of important structures.
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Affiliation(s)
- Laurentiu Simion
- Ist Clinic of General Surgery and Surgical Oncology, Bucharest Oncology Institute, 022328 Bucharest, Romania; (L.S.)
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Sinziana Ionescu
- Ist Clinic of General Surgery and Surgical Oncology, Bucharest Oncology Institute, 022328 Bucharest, Romania; (L.S.)
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Elena Chitoran
- Ist Clinic of General Surgery and Surgical Oncology, Bucharest Oncology Institute, 022328 Bucharest, Romania; (L.S.)
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Ph.D. Studies, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Vlad Rotaru
- Ist Clinic of General Surgery and Surgical Oncology, Bucharest Oncology Institute, 022328 Bucharest, Romania; (L.S.)
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Ph.D. Studies, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Ciprian Cirimbei
- Ist Clinic of General Surgery and Surgical Oncology, Bucharest Oncology Institute, 022328 Bucharest, Romania; (L.S.)
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Octavia-Luciana Madge
- Ist Clinic of General Surgery and Surgical Oncology, Bucharest Oncology Institute, 022328 Bucharest, Romania; (L.S.)
- University of Bucharest, 030018 Bucharest, Romania
| | - Alin Codrut Nicolescu
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Ph.D. Studies, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Emergency Hospital “Prof. Dr. Agrippa Ionescu”, 011356 Bucharest, Romania
| | - Bogdan Tanase
- Clinic of Thoracic Surgery, Bucharest Oncology Institute, 022328 Bucharest, Romania
| | - Irinel-Gabriel Dicu-Andreescu
- Ist Clinic of General Surgery and Surgical Oncology, Bucharest Oncology Institute, 022328 Bucharest, Romania; (L.S.)
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Ph.D. Studies, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Denisa Mihaela Dinu
- Surgery Clinic, Bucharest Emergency University Hospital, 050098 Bucharest, Romania
| | - Dan Cristian Luca
- Ist Clinic of General Surgery and Surgical Oncology, Bucharest Oncology Institute, 022328 Bucharest, Romania; (L.S.)
| | - Dana Lucia Stanculeanu
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Oncology Clinic, “Prof. Dr. Al. Trestioreanu” Bucharest Oncology Institute, 022328 Bucharest, Romania
| | - Adelina Silvana Gheorghe
- Ph.D. Studies in Oncology, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Daniela Zob
- Oncology Department, “Prof. Dr. Al. Trestioreanu” Bucharest Oncology Institute, 022328 Bucharest, Romania
| | - Marian Marincas
- Ist Clinic of General Surgery and Surgical Oncology, Bucharest Oncology Institute, 022328 Bucharest, Romania; (L.S.)
- “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
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Son GM, Nazir AM, Yun MS, Lee IY, Im SB, Kwak JY, Park SH, Baek KR, Gockel I. The Safe Values of Quantitative Perfusion Parameters of ICG Angiography Based on Tissue Oxygenation of Hyperspectral Imaging for Laparoscopic Colorectal Surgery: A Prospective Observational Study. Biomedicines 2023; 11:2029. [PMID: 37509667 PMCID: PMC10377371 DOI: 10.3390/biomedicines11072029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/13/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023] Open
Abstract
BACKGROUND Safe values for quantitative perfusion parameters of indocyanine green (ICG) angiography have not been fully defined, and interpretation remains at the surgeon's discretion. This prospective observational study aimed to establish the safe values for the quantitative perfusion parameters by comparing tissue oxygenation levels from HSI images in laparoscopic colorectal surgery. METHODS ICG angiography was performed using a laparoscopic near-infrared (NIR) camera system with ICG diluted in 10 mL of distilled water. For quantitative perfusion parameters, the changes in fluorescence intensity with perfusion times were analyzed to plot a time-fluorescence intensity graph. To assess real-time tissue oxygen saturation (StO2) in the colon, the TIVITA® Tissue System was utilized for hyperspectral imaging (HSI) acquisition. The StO2 levels were compared with the quantitative perfusion parameters derived from ICG angiography at corresponding points to define the safe range of ICG parameters reflecting good tissue oxygenation. RESULTS In the regression analysis, T1/2MAX, TMAX, slope, and NIR perfusion index were correlated with tissue oxygen saturation. Using this regression model, the cutoff values of quantitative perfusion parameters were calculated as T1/2MAX ≤ 10 s, TMAX ≤ 30 s, slope ≥ 5, and NIR perfusion index ≥50, which best reflected colon StO2 higher than 60%. Diagnostic values were analyzed to predict colon StO2 of 60% or more, and the ICG perfusion parameters T1/2MAX, TMAX, and perfusion TR showed high sensitivity values of 97% or more, indicating their ability to correctly identify cases with acceptable StO2. CONCLUSION The safe values for quantitative perfusion parameters derived from ICG angiography were T1/2MAX ≤ 10 s and TMAX ≤ 30 s, which were associated with colon tissue oxygenation levels higher than 60% in the laparoscopic colorectal surgery.
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Affiliation(s)
- Gyung Mo Son
- Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan 50612, Republic of Korea
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 50612, Republic of Korea; (M.S.Y.); (I.Y.L.)
| | - Armaan M. Nazir
- School of Medicine, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, D02 YN77 Dublin, Ireland;
| | - Mi Sook Yun
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 50612, Republic of Korea; (M.S.Y.); (I.Y.L.)
| | - In Young Lee
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 50612, Republic of Korea; (M.S.Y.); (I.Y.L.)
| | - Sun Bin Im
- Department of Medicine, Pusan National University School of Medicine, Yangsan 50612, Republic of Korea;
| | - Jae Yeong Kwak
- Department of Electronics Engineering, Pusan National University, Busan 46241, Republic of Korea; (J.Y.K.); (S.-H.P.); (K.-R.B.)
| | - Sang-Ho Park
- Department of Electronics Engineering, Pusan National University, Busan 46241, Republic of Korea; (J.Y.K.); (S.-H.P.); (K.-R.B.)
| | - Kwang-Ryul Baek
- Department of Electronics Engineering, Pusan National University, Busan 46241, Republic of Korea; (J.Y.K.); (S.-H.P.); (K.-R.B.)
| | - Ines Gockel
- Department of Visceral, Transplantation, Thoracic and Vascular Surgery, University Hospital Leipzig, 04103 Leipzig, Germany;
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Pollmann L, Juratli M, Roushansarai N, Pascher A, Hölzen JP. Quantification of Indocyanine Green Fluorescence Imaging in General, Visceral and Transplant Surgery. J Clin Med 2023; 12:jcm12103550. [PMID: 37240657 DOI: 10.3390/jcm12103550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/02/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
Near-infrared (NIR) imaging with indocyanine green (ICG) has proven to be useful in general, visceral, and transplant surgery. However, most studies have performed only qualitative assessments. Therefore, a systematic overview of all studies performing quantitative indocyanine green evaluation in general, visceral, and transplant surgeries should be conducted. Free term and medical subject heading (MeSH) term searches were performed in the Medline and Cochrane databases until October 2022. The main categories of ICG quantification were esophageal surgery (24.6%), reconstructive surgery (24.6%), and colorectal surgery (21.3%). Concordantly, anastomotic leak (41%) was the main endpoint, followed by the assessment of flap perfusion (23%) and the identification of structures and organs (14.8%). Most studies examined open surgery (67.6%) or laparoscopic surgery (23.1%). The analysis was mainly carried out using manufacturer software (44.3%) and open-source software (15.6%). The most frequently analyzed parameter was intensity over time for blood flow assessment, followed by intensity alone or intensity-to-background ratios for structure and organ identification. Intraoperative ICG quantification could become more important with the increasing impact of robotic surgery and machine learning algorithms for image and video analysis.
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Affiliation(s)
- Lukas Pollmann
- Department for General, Visceral and Transplant Surgery, University Hospital Münster, 48149 Munster, Germany
| | - Mazen Juratli
- Department for General, Visceral and Transplant Surgery, University Hospital Münster, 48149 Munster, Germany
| | - Nicola Roushansarai
- Department for General, Visceral and Transplant Surgery, University Hospital Münster, 48149 Munster, Germany
| | - Andreas Pascher
- Department for General, Visceral and Transplant Surgery, University Hospital Münster, 48149 Munster, Germany
| | - Jens Peter Hölzen
- Department for General, Visceral and Transplant Surgery, University Hospital Münster, 48149 Munster, Germany
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Hardy NP, MacAonghusa P, Dalli J, Gallagher G, Epperlein JP, Shields C, Mulsow J, Rogers AC, Brannigan AE, Conneely JB, Neary PM, Cahill RA. Clinical application of machine learning and computer vision to indocyanine green quantification for dynamic intraoperative tissue characterisation: how to do it. Surg Endosc 2023:10.1007/s00464-023-09963-2. [PMID: 36894810 PMCID: PMC10338552 DOI: 10.1007/s00464-023-09963-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 02/12/2023] [Indexed: 03/11/2023]
Abstract
INTRODUCTION Indocyanine green (ICG) quantification and assessment by machine learning (ML) could discriminate tissue types through perfusion characterisation, including delineation of malignancy. Here, we detail the important challenges overcome before effective clinical validation of such capability in a prospective patient series of quantitative fluorescence angiograms regarding primary and secondary colorectal neoplasia. METHODS ICG perfusion videos from 50 patients (37 with benign (13) and malignant (24) rectal tumours and 13 with colorectal liver metastases) of between 2- and 15-min duration following intravenously administered ICG were formally studied (clinicaltrials.gov: NCT04220242). Video quality with respect to interpretative ML reliability was studied observing practical, technical and technological aspects of fluorescence signal acquisition. Investigated parameters included ICG dosing and administration, distance-intensity fluorescent signal variation, tissue and camera movement (including real-time camera tracking) as well as sampling issues with user-selected digital tissue biopsy. Attenuating strategies for the identified problems were developed, applied and evaluated. ML methods to classify extracted data, including datasets with interrupted time-series lengths with inference simulated data were also evaluated. RESULTS Definable, remediable challenges arose across both rectal and liver cohorts. Varying ICG dose by tissue type was identified as an important feature of real-time fluorescence quantification. Multi-region sampling within a lesion mitigated representation issues whilst distance-intensity relationships, as well as movement-instability issues, were demonstrated and ameliorated with post-processing techniques including normalisation and smoothing of extracted time-fluorescence curves. ML methods (automated feature extraction and classification) enabled ML algorithms glean excellent pathological categorisation results (AUC-ROC > 0.9, 37 rectal lesions) with imputation proving a robust method of compensation for interrupted time-series data with duration discrepancies. CONCLUSION Purposeful clinical and data-processing protocols enable powerful pathological characterisation with existing clinical systems. Video analysis as shown can inform iterative and definitive clinical validation studies on how to close the translation gap between research applications and real-world, real-time clinical utility.
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Affiliation(s)
- Niall P Hardy
- UCD Centre for Precision Surgery, School of Medicine, University College Dublin, Dublin, Ireland
| | | | - Jeffrey Dalli
- UCD Centre for Precision Surgery, School of Medicine, University College Dublin, Dublin, Ireland
| | - Gareth Gallagher
- UCD Centre for Precision Surgery, School of Medicine, University College Dublin, Dublin, Ireland
| | | | - Conor Shields
- Department of General and Colorectal Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - Jurgen Mulsow
- Department of General and Colorectal Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - Ailín C Rogers
- Department of General and Colorectal Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - Ann E Brannigan
- Department of General and Colorectal Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - John B Conneely
- Department of Hepatobiliary, Foregut and Bariatric Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - Peter M Neary
- Department of General and Colorectal Surgery, University Hospital Waterford, University College Cork, Waterford, Ireland
| | - Ronan A Cahill
- UCD Centre for Precision Surgery, School of Medicine, University College Dublin, Dublin, Ireland.
- Department of General and Colorectal Surgery, Mater Misericordiae University Hospital, Dublin, Ireland.
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Dalli J, Jindal A, Gallagher G, Epperlein JP, Hardy NP, Malallah R, O’Donoghue K, Cantillon-Murphy P, Mac Aonghusa PG, Cahill RA. Evaluating clinical near-infrared surgical camera systems with a view to optimizing operator and computational signal analysis. JOURNAL OF BIOMEDICAL OPTICS 2023; 28:035002. [PMID: 37009578 PMCID: PMC10050972 DOI: 10.1117/1.jbo.28.3.035002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/14/2023] [Indexed: 06/19/2023]
Abstract
SIGNIFICANCE As clinical evidence on the colorectal application of indocyanine green (ICG) perfusion angiography accrues, there is also interest in computerizing decision support. However, user interpretation and software development may be impacted by system factors affecting the displayed near-infrared (NIR) signal. AIM We aim to assess the impact of camera positioning on the displayed NIR signal across different open and laparoscopic camera systems. APPROACH The effects of distance, movement, and target location (center versus periphery) on the displayed fluorescence signal of different systems were measured under electromagnetic stereotactic guidance from an ICG-albumin model and in vivo during surgery. RESULTS Systems displayed distinct fluorescence performances with variance apparent with scope optical lens configuration (0 deg versus 30 deg), movement, target positioning, and distance. Laparoscopic system readings fitted inverse square function distance-intensity curves with one device and demonstrated a direction dependent sigmoid curve. Laparoscopic cameras presented central targets as brighter than peripheral ones, and laparoscopes with angled optical lens configurations had a diminished field of view. One handheld open system also showed a distance-intensity relationship, whereas the other maintained a consistent signal despite distance, but both presented peripheral targets brighter than central ones. CONCLUSIONS Optimal clinical use and signal computational development requires detailed appreciation of system behaviors.
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Affiliation(s)
- Jeffrey Dalli
- University College, UCD Centre for Precision Surgery, Dublin, Ireland
| | - Abhinav Jindal
- University College, UCD Centre for Precision Surgery, Dublin, Ireland
| | - Gareth Gallagher
- University College, UCD Centre for Precision Surgery, Dublin, Ireland
| | | | - Niall P. Hardy
- University College, UCD Centre for Precision Surgery, Dublin, Ireland
| | - Ra’ed Malallah
- University College, UCD Centre for Precision Surgery, Dublin, Ireland
- University of Basrah, Physics Department, Faculty of Science, Basrah, Iraq
| | | | - Padraig Cantillon-Murphy
- University College Cork, School of Engineering, Cork, Ireland
- Tyndall National Institute, Cork, Ireland
| | | | - Ronan A. Cahill
- University College, UCD Centre for Precision Surgery, Dublin, Ireland
- Mater Misericordiae University Hospital, Department of Surgery, Dublin, Ireland
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Oppermann C, Dohrn N, Yikilmaz H, Falk Klein M, Eriksen T, Gögenur I. Continuous organ perfusion monitoring using indocyanine green in a piglet model. Surg Endosc 2023; 37:1601-1610. [PMID: 36595066 DOI: 10.1007/s00464-022-09824-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 12/05/2022] [Indexed: 01/04/2023]
Abstract
BACKGROUND Unrecognized organ hypoperfusion may cause major postoperative complications with detrimental effects for the patient. The use of Indocyanine Green (ICG) to detect organ hypoperfusion is emerging but the optimal methodology is still uncertain. The purpose of this study was to determine the feasibility of real-time continuous quantitative perfusion assessment with Indocyanine Green (ICG) to monitor organ perfusion during minimally invasive surgery using a novel ICG dosing regimen and quantification software. METHOD In this experimental porcine study, twelve subjects were administered a priming dose of ICG, followed by a regimen of high-frequency (1 dose per minute), low-dose bolus injections with weight-adjusted (0.008 mg/kg) ICG allowing for continuous perfusion monitoring. In each pig, one randomly assigned organ of interest [stomach (n = 3), ascending colon (n = 3), rectum (n = 3) and spleen (n = 3)] was investigated with varying camera conditions. Video recording was performed with the 1588 AIM Stryker camera platform and subsequent quantitative analysis of the ICG signal were performed using a research version of a commercially available surgical real-time analysis software. RESULTS Using a high-frequency, low-dose bolus ICG regimen, fluorescence visualization and quantification in abdominal organs were successful in the stomach (3/3), ascending colon (1/3), rectum (2/3), and the spleen (3/3). ICG accumulation in the tissue over time did not affect the quantification process. Considerable variation in fluorescence signal was observed between organs and between the same organ in different subjects. Of the different camera conditions investigated, the highest signal was achieved when the camera was placed 7.5 cm from the target organ. CONCLUSION This proof-of-concept study finds that real-time continuous perfusion monitoring in different abdominal organs using ICG is feasible. However, the study also finds a large variation in fluorescence intensity between organs and between the same organ in different subjects while using a fixed weight-adjusted dosing regimen using the same camera setting and placement.
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Affiliation(s)
- Carolin Oppermann
- Center for Surgical Science, Zealand University Hospital, Lykkebækvej 1, 4600, Køge, Denmark.
| | - Niclas Dohrn
- Center for Surgical Science, Zealand University Hospital, Lykkebækvej 1, 4600, Køge, Denmark
- Department of Surgery, Copenhagen University Hospital-Herlev and Gentofte, Borgmester Ib Juuls Vej 1, 2730, Herlev, Denmark
| | - Helin Yikilmaz
- Center for Surgical Science, Zealand University Hospital, Lykkebækvej 1, 4600, Køge, Denmark
| | - Mads Falk Klein
- Department of Surgery, Copenhagen University Hospital-Herlev and Gentofte, Borgmester Ib Juuls Vej 1, 2730, Herlev, Denmark
| | - Thomas Eriksen
- Department of Veterinary Clinical Sciences, University of Copenhagen, Dyrlægevej 16, 1870, Frederiksberg C, Denmark
| | - Ismail Gögenur
- Center for Surgical Science, Zealand University Hospital, Lykkebækvej 1, 4600, Køge, Denmark
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Van Den Hoven P, Osterkamp J, Nerup N, Svendsen MBS, Vahrmeijer A, Van Der Vorst JR, Achiam MP. Quantitative perfusion assessment using indocyanine green during surgery - current applications and recommendations for future use. Langenbecks Arch Surg 2023; 408:67. [PMID: 36700999 PMCID: PMC9879827 DOI: 10.1007/s00423-023-02780-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 12/12/2022] [Indexed: 01/27/2023]
Abstract
PURPOSE Incorrect assessment of tissue perfusion carries a significant risk of complications in surgery. The use of near-infrared (NIR) fluorescence imaging with Indocyanine Green (ICG) presents a possible solution. However, only through quantification of the fluorescence signal can an objective and reproducible evaluation of tissue perfusion be obtained. This narrative review aims to provide an overview of the available quantification methods for perfusion assessment using ICG NIR fluorescence imaging and to present an overview of current clinically utilized software implementations. METHODS PubMed was searched for clinical studies on the quantification of ICG NIR fluorescence imaging to assess tissue perfusion. Data on the utilized camera systems and performed methods of quantification were collected. RESULTS Eleven software programs for quantifying tissue perfusion using ICG NIR fluorescence imaging were identified. Five of the 11 programs have been described in three or more clinical studies, including Flow® 800, ROIs Software, IC Calc, SPY-Q™, and the Quest Research Framework®. In addition, applying normalization to fluorescence intensity analysis was described for two software programs. CONCLUSION Several systems or software solutions provide a quantification of ICG fluorescence; however, intraoperative applications are scarce and quantification methods vary abundantly. In the widespread search for reliable quantification of perfusion with ICG NIR fluorescence imaging, standardization of quantification methods and data acquisition is essential.
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Affiliation(s)
- P Van Den Hoven
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands.
| | - J Osterkamp
- Department of Surgery and Transplantation, Copenhagen University Hospital Rigshospitalet, The Capital Region of Denmark, Copenhagen, Denmark
| | - N Nerup
- Department of Surgery and Transplantation, Copenhagen University Hospital Rigshospitalet, The Capital Region of Denmark, Copenhagen, Denmark
| | - M B S Svendsen
- CAMES Engineering, Copenhagen Academy for Medical Education and Simulation, Centre for Human Resources and Education, The Capital Region of Denmark, Copenhagen, Denmark
| | - Alexander Vahrmeijer
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - J R Van Der Vorst
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - M P Achiam
- Department of Surgery and Transplantation, Copenhagen University Hospital Rigshospitalet, The Capital Region of Denmark, Copenhagen, Denmark
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In vivo evaluation of a hyperspectral imaging system for minimally invasive surgery (HSI-MIS). Surg Endosc 2023; 37:3691-3700. [PMID: 36645484 PMCID: PMC10156625 DOI: 10.1007/s00464-023-09874-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 01/06/2023] [Indexed: 01/17/2023]
Abstract
BACKGROUND Hyperspectral Imaging (HSI) is a reliable and safe imaging method for taking intraoperative perfusion measurements. This is the first study translating intraoperative HSI to an in vivo laparoscopic setting using a CE-certified HSI-system for minimally invasive surgery (HSI-MIS). We aim to compare it to an established HSI-system for open surgery (HSI-Open). METHODS Intraoperative HSI was done using the HSI-MIS and HSI-Open at the Region of Interest (ROI). 19 patients undergoing gastrointestinal resections were analyzed in this study. The HSI-MIS-acquired images were aligned with those from the HSI-Open, and spectra and parameter images were compared pixel-wise. We calculated the Mean Absolute Error (MAE) for Tissue Oxygen Saturation (StO2), Near-Infrared Perfusion Index (NIR-PI), Tissue Water Index (TWI), and Organ Hemoglobin Index (OHI), as well as the Root Mean Squared Error (RMSE) over the whole spectrum. Our analysis of parameters was optimized using partial least squares (PLS) regression. Two experienced surgeons carried out an additional color-change analysis, comparing the ROI images and deciding whether they provided the same (acceptable) or different visual information (rejected). RESULTS HSI and subsequent image registration was possible in 19 patients. MAE results for the original calculation were StO2 orig. 17.2% (± 7.7%), NIR-PIorig. 16.0 (± 9.5), TWIorig. 18.1 (± 7.9), OHIorig. 14.4 (± 4.5). For the PLS calculation, they were StO2 PLS 12.6% (± 5.2%), NIR-PIPLS 10.3 (± 6.0), TWIPLS 10.6 (± 5.1), and OHIPLS 11.6 (± 3.0). The RMSE between both systems was 0.14 (± 0.06). In the color-change analysis; both surgeons accepted more images generated using the PLS method. CONCLUSION Intraoperative HSI-MIS is a new technology and holds great potential for future applications in surgery. Parameter deviations are attributable to technical differences and can be reduced by applying improved calculation methods. This study is an important step toward the clinical implementation of HSI for minimally invasive surgery.
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Anastomotic perfusion assessment with indocyanine green in robot-assisted low-anterior resection, a multicenter study of interobserver variation. Surg Endosc 2023; 37:3602-3609. [PMID: 36624218 PMCID: PMC10156761 DOI: 10.1007/s00464-022-09819-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 12/05/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Securing sufficient blood perfusion to the anastomotic area after low-anterior resection is a crucial factor in preventing anastomotic leakage (AL). Intra-operative indocyanine green fluorescent imaging (ICG-FI) has been suggested as a tool to assess perfusion. However, knowledge of inter-observer variation among surgeons in the interpretation of ICG-FI is sparse. Our primary objective was to evaluate inter-observer variation among surgeons in the interpretation of bowel blood-perfusion assessed visually by ICG-FI. Our secondary objective was to compare the results both from the visual assessment of ICG and from computer-based quantitative analyses of ICG-FI between patients with and without the development of AL. METHOD A multicenter study, including patients undergoing robot-assisted low anterior resection with stapled anastomosis. ICG-FI was evaluated visually by the surgeon intra-operatively. Postoperatively, recorded videos were anonymized and exchanged between centers for inter-observer evaluation. Time to visibility (TTV), time to maximum visibility (TMV), and time to wash-out (TWO) were visually assessed. In addition, the ICG-FI video-recordings were analyzed using validated pixel analysis software to quantify blood perfusion. RESULTS Fifty-five patients were included, and five developed clinical AL. Bland-Altman plots (BA plots) demonstrated wide inter-observer variation for visually assessed fluorescence on all parameters (TTV, TMV, and TWO). Comparing leak-group with no-leak group, we found no significant differences for TTV: Hazard Ratio; HR = 0.82 (CI 0.32; 2.08), TMV: HR = 0.62 (CI 0.24; 1.59), or TWO: HR = 1.11 (CI 0.40; 3.11). In the quantitative pixel analysis, a lower slope of the fluorescence time-curve was found in patients with a subsequent leak: median 0.08 (0.07;0.10) compared with non-leak patients: median 0.13 (0.10;0.17) (p = 0.04). CONCLUSION The surgeon's visual assessment of the ICG-FI demonstrated wide inter-observer variation, there were no differences between patients with and without AL. However, quantitative pixel analysis showed a significant difference between groups. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT04766060.
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Novruzbekov MS, Lutsyk KN, Olisov OD, Magomedov KM, Kazymov BI, Alekberov KF, Akhmedov AR, Yaremin BI. [Indocyanine green in liver transplantation]. Khirurgiia (Mosk) 2023:63-72. [PMID: 37682549 DOI: 10.17116/hirurgia202309263] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
The purpose of this study was to evaluate the first own experience of using indocyanine green (ICG) in liver transplantation compared to literature data and to determine its potential for clinical practice. Liver transplantation is an effective option for patients with end-stage disease, but this procedure is associated with many problems such as graft rejection, graft dysfunction, surgical risk and postoperative management. Modern methods for assessing graft function have their limitations, so a more efficient method is needed. According to this review, ICG fluorescence is valuable for effective intraoperative blood flow control, assessment of graft function, intraoperative and postoperative monitoring of clinical status. ICG fluorescence can also predict clinical status of patients at all stages of liver transplantation. Routine ICG fluorescence method is advisable in liver transplantation to improve outcomes and optimize treatment process.
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Affiliation(s)
- M S Novruzbekov
- Sklifosovsky Research Institute for Emergency Care, Moscow, Russia
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - K N Lutsyk
- Sklifosovsky Research Institute for Emergency Care, Moscow, Russia
| | - O D Olisov
- Sklifosovsky Research Institute for Emergency Care, Moscow, Russia
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - K M Magomedov
- Sklifosovsky Research Institute for Emergency Care, Moscow, Russia
| | - B I Kazymov
- Sklifosovsky Research Institute for Emergency Care, Moscow, Russia
| | - K F Alekberov
- Sklifosovsky Research Institute for Emergency Care, Moscow, Russia
| | - A R Akhmedov
- Sklifosovsky Research Institute for Emergency Care, Moscow, Russia
| | - B I Yaremin
- Sklifosovsky Research Institute for Emergency Care, Moscow, Russia
- Pirogov Russian National Research Medical University, Moscow, Russia
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Gaidarski III AA, Ferrara M. The Colorectal Anastomosis: A Timeless Challenge. Clin Colon Rectal Surg 2022; 36:11-28. [PMID: 36619283 PMCID: PMC9815911 DOI: 10.1055/s-0042-1756510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Colorectal anastomosis is a sophisticated problem that demands an elaborate discussion and an elegant solution. "Those who forget the past are condemned to repeat it." George Santayana, Life of Reason , 1905.
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Affiliation(s)
| | - Marco Ferrara
- Colon and Rectal Clinic of Orlando, Orlando, Florida,Address for correspondence Marco Ferrara, MD Colon and Rectal Clinic of Orlando110 West Underwood ST, Suite A, Orlando, FL 32806
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Dalli J, Shanahan S, Hardy NP, Chand M, Hompes R, Jayne D, Ris F, Spinelli A, Wexner S, Cahill RA. Deconstructing mastery in colorectal fluorescence angiography interpretation. Surg Endosc 2022; 36:8764-8773. [PMID: 35543771 PMCID: PMC9652172 DOI: 10.1007/s00464-022-09299-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 04/23/2022] [Indexed: 01/06/2023]
Abstract
INTRODUCTION Indocyanine green fluorescence angiography (ICGFA) is commonly used in colorectal anastomotic practice with limited pre-training. Recent work has shown that there is considerable inconsistency in signal interpretation between surgeons with minimal or no experience versus those consciously invested in mastery of the technique. Here, we deconstruct the fluorescence signal patterns of expert-annotated surgical ICGFA videos to understand better their correlation and combine this with structured interviews to ascertain whether such interpretative capability is conscious or unconscious. METHODS For fluorescence signal analysis, expert-annotated ICGFA videos (n = 24) were quantitatively interrogated using a boutique intensity tracker (IBM Research) to generate signal time plots. Such fluorescence intensity data were examined for inter-observer correlation (Intraclass Correlation Coefficients, ICC) at specific curve milestones: the maximum fluorescence signal (Fmax), the times to both achieve this maximum (Tmax), as well as half this maximum (T1/2max) and the ratio between these (T1/2/Tmax). Formal tele-interview with contributing experts (n = 6) was conducted with the narrative transcripts being thematically mapped, plotted, and qualitatively analyzed. RESULTS Correlation by mathematical measures was excellent (ICC0.9-1.0) for Fmax, Tmax, and T1/2max (0.95, 0.938, and 0.925, respectively) and moderate (0.5-0.75) for T1/2/Tmax (0.729). While all experts narrated a deliberate viewing strategy, their specific dynamic signal appreciation differed in the manner of description. CONCLUSION Expert ICGFA users demonstrate high correlation in mathematical measures of their signal interpretation although do so tacitly. Computational quantification of expert behavior can help develop the necessary lexicon and training sets as well as computer vision methodology to better exploit ICGFA technology.
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Affiliation(s)
- Jeffrey Dalli
- UCD Centre for Precision Surgery, School of Medicine, Catherine McAuley Centre, University College Dublin, 21 Nelson St, Phibsborough, Dublin 7, D07 KX5K, Ireland
| | - Sarah Shanahan
- UCD Centre for Precision Surgery, School of Medicine, Catherine McAuley Centre, University College Dublin, 21 Nelson St, Phibsborough, Dublin 7, D07 KX5K, Ireland
| | - Niall P Hardy
- UCD Centre for Precision Surgery, School of Medicine, Catherine McAuley Centre, University College Dublin, 21 Nelson St, Phibsborough, Dublin 7, D07 KX5K, Ireland
| | - Manish Chand
- UCL Division of Surgery and Interventional Sciences, WEISS Centre, University College London, London, UK
| | - Roel Hompes
- Department of Surgery, Amsterdam UMC (AMC), University of Amsterdam, Amsterdam, The Netherlands
| | - David Jayne
- Leeds Institute for Medical Research, University of Leeds, Leeds, UK
| | - Frederic Ris
- Service of Visceral Surgery, Geneva University Hospitals and Medical School, Geneva, Switzerland
| | - Antonino Spinelli
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20090, Pieve Emanuele, MI, Italy
- IRCCS Humanitas Research Hospital, via Manzoni 56, 20089, Rozzano, MI, Italy
| | - Steven Wexner
- Department of Colorectal Surgery, Cleveland Clinic Florida, Weston, FL, 33331, USA
| | - Ronan A Cahill
- UCD Centre for Precision Surgery, School of Medicine, Catherine McAuley Centre, University College Dublin, 21 Nelson St, Phibsborough, Dublin 7, D07 KX5K, Ireland.
- Department of Surgery, Mater Misericordiae University Hospital, Dublin, Ireland.
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Kong W, Wang B, Niu Q, Lin C, Fan D. Quantitative evaluation of anastomotic perfusion during colorectal surgery via indocyanine green fluorescence angiography: a narrative review. ANNALS OF TRANSLATIONAL MEDICINE 2022; 10:1402. [PMID: 36660668 PMCID: PMC9843406 DOI: 10.21037/atm-22-5312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 11/21/2022] [Indexed: 12/23/2022]
Abstract
Background and Objective Quantitative studies of indocyanine green (ICG) are needed to optimize its evaluative potential in anastomotic perfusion during colorectal surgery. However, some limitations still existed in current studies about qualitative evaluations such as small-scale studies, the inconsistent concentration of the drug, the method of injection, etc. Therefore, this review summarized the primary quantitative parameters, image, method, and so on, during ICG fluorescence angiography aiming to further provide a theoretical basis for the application of ICG in laparoscopic colorectal surgery. Methods The following keywords "indocyanine green or ICG", "anastomotic perfusion", and "colorectal surgery" were applied to search for literature published from 2002 to 2022 in the PubMed, Web of Science, and Medline databases. Then, the information about ICG fluorescence angiography in quantitative evaluation of anastomotic perfusion during colorectal surgery was summarized. Through integrating the experiences derived from the literature and our research center, the crucial quantitative parameters [such as T0, Tmax, Fmax, and S (Fmax/Tmax)], image characteristics, and standard operational process for ICG fluorescence angiography were summarized. Key Content and Findings Firstly, quantitative parameters, including T0, Tmax, Fmax, and S (Fmax/Tmax) during the ICG fluorescence angiography could predict anastomotic leakage, and thus should be recorded. Secondly, the image curve generated by the software might differ among patients, which included a filling period, reducing period, and platform period; some patients even presented a second fluorescence intensity peak. Finally, present studies presented great heterogeneity regarding the injection dose of ICG, observation distance from the laparoscope to the anastomotic site, software, and so on, during ICG fluorescence angiography in quantitatively evaluating the intestinal blood perfusion. Conclusions This review points out the challenges of ICG fluorescence angiography in quantitative evaluation of anastomotic perfusion and gives some advice. However, some difficulties and issues are non-neglectable during the clinical implications of the quantitative evaluation of ICG, such as standardizing the specific cut-off value about the quantitative parameters, injection dose of ICG, observation distance from the laparoscope to the anastomotic site, software, and so on, during ICG fluorescence angiography in quantitatively evaluating the intestinal blood perfusion to eliminate heterogeneity.
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Affiliation(s)
- Weiqi Kong
- Department of General Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bingyi Wang
- Department of General Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qiguang Niu
- Department of General Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chaoyi Lin
- Department of General Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Donglai Fan
- Department of General Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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A Narrative Review of the Usefulness of Indocyanine Green Fluorescence Angiography for Perfusion Assessment in Colorectal Surgery. Cancers (Basel) 2022; 14:cancers14225623. [PMID: 36428716 PMCID: PMC9688558 DOI: 10.3390/cancers14225623] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/12/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022] Open
Abstract
Anastomotic leakage is one of the most dreaded complications of colorectal surgery and is strongly associated with tissue perfusion. Indocyanine green fluorescence angiography (ICG-FA) using indocyanine green and near-infrared systems is an innovative technique that allows the visualization of anastomotic perfusion. Based on this information on tissue perfusion status, surgeons will be able to clearly identify colorectal segments with good blood flow for safer colorectal anastomosis. The results of several clinical trials indicate that ICG-FA may reduce the risk of AL in colorectal resection; however, the level of evidence is not high, as several other studies have failed to demonstrate a reduction in the risk of AL. Several large-scale RCTs are currently underway, and their results will determine whether ICG-FA is, indeed, useful. The major limitation of the current ICG-FA evaluation method, however, is that it is subjective and based on visual assessment by the surgeon. To complement this, the utility of objective evaluation methods for fluorescence using quantitative parameters is being investigated. Promising results have been reported from several clinical trials, but all trials are preliminary owing to their small sample size and lack of standardized protocols for quantitative evaluation. Therefore, appropriately standardized, high-quality, large-scale studies are warranted.
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The effect of intracorporeal versus extracorporeal anastomosis in robotic right colectomy on perianastomotic perfusion: a substudy to a multicenter RCT. Langenbecks Arch Surg 2022; 407:3577-3586. [PMID: 36171282 DOI: 10.1007/s00423-022-02693-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 09/15/2022] [Indexed: 10/14/2022]
Abstract
PURPOSE Previous studies have shown that intracorporeal anastomosis (ICA) in minimally invasive right colectomy may improve postoperative recovery compared with extracorporeal anastomosis (ECA). It has been hypothesized that creating the anastomosis extracorporeally may cause mesenteric traction and compromised intestinal perfusion. The purpose of this study was to investigate the effect of either ICA or ECA on intestinal perfusion. METHOD This was a substudy to a multicenter, triple-blind randomized clinical trial comparing ICA with ECA in patients undergoing robotic right colectomy for colonic cancer. Videos from intraoperative Indocyanine Green (ICG) fluorescence imaging were analyzed with quantitative ICG perfusion assessment (q-ICG). q-ICG was performed by extracting perfusion metrics from a time-intensity curve generated from an image analysis software: FMAX: maximal fluorescence intensity, TMAX: time until maximal fluorescent signal, T1/2MAX: time until half-maximal fluorescent signal, time ratio (T1/2MAX/TMAX) and slope. RESULTS A total of 68 patients (33 ICA and 35 ECA) were available for analysis. Demographics were similar between the groups, except for mean arterial blood pressure at the time of ICG infusion, which was significantly lower in the ICA group. We found a significantly steeper slope in the ICA group compared to the ECA group (6.3 vs. 4.7 AU/sec, P = .048). There were no significant differences in FMAX, TMAX, T1/2MAX, and time ratio. CONCLUSION We found evidence of an improved intestinal perfusion following ICA compared with ECA. This finding may be related to patient outcomes and should be explored further in the future. TRIAL REGISTRATION CLINICALTRIALS gov NCT03130166.
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Ileal long-segment ischemia after the unintended ligation of variant ileal branch during laparoscopic right hemicolectomy. JOURNAL OF MINIMALLY INVASIVE SURGERY 2022; 25:116-119. [PMID: 36177374 PMCID: PMC9494016 DOI: 10.7602/jmis.2022.25.3.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/24/2022] [Accepted: 07/02/2022] [Indexed: 11/17/2022]
Abstract
The variant terminal trunk of the superior mesenteric artery (SMA) could be confused with the ileocolic artery (ICA) as it runs on the right side of the superior mesenteric vein. If the variant ileal branch of SMA is mistaken for the ICA, unintentional ligation could cause long-segment ischemia in the ileum. We encountered a rare case of ileal ischemia caused by unintentional ligation of the variant ileal branch of the SMA during laparoscopic right hemicolectomy, which was confirmed by indocyanine green (ICG) angiography and hyperspectral imaging (HSI). Intraoperative real-time perfusion monitoring using ICG angiography and tissue oxygen saturation monitoring using HSI could help detect segments of hypoperfusion and prevent hypoperfusion-related anastomotic complications.
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Wada T, Kawada K, Hanada K, Obama K. Quantitative Analysis of Colonic Perfusion Using ICG Fluorescence Angiography and Its Consequences for Anastomotic Healing in a Rat Model. Cancers (Basel) 2022; 14:cancers14164024. [PMID: 36011017 PMCID: PMC9406386 DOI: 10.3390/cancers14164024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/12/2022] [Accepted: 08/19/2022] [Indexed: 11/18/2022] Open
Abstract
Forty-three rats were randomly assigned to the following four groups: non-ischemic group (Control Group), 1 cm-long ischemic group (Group 1), 2 cm-long ischemic group (Group 2), and 3 cm-long ischemic group (Group 3). The rates of AL were 0% (0/10) in the Control Group, 22.2% (2/9) in Group 1, 25% (2/8) in Group 2, and 50% (4/8) in Group 3. The bursting pressure of the Control Group was significantly higher than that of the other groups (p < 0.01). Regarding the pathological findings, the granulation thickness and the number of blood vessels at the anastomosed site were significantly higher in the Control Group than in Group 3 (p < 0.05). Receiver operating characteristics analysis revealed that Slope was the most significant predictor of AL, with an area under the curve of 0.861. When the cutoff value of Slope was 0.4, the sensitivity and specificity for the prediction of AL were 75% and 81.4%, respectively. Quantitative analysis of ICG fluorescence angiography could predict AL in a rat model.
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Affiliation(s)
- Toshiaki Wada
- Department of Gastrointestinal Surgery, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
- Department of Surgery, Faculty of Medicine, Kindai University, Osaka 589-8511, Japan
| | - Kenji Kawada
- Department of Gastrointestinal Surgery, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
- Correspondence: ; Tel.: +81-75-366-7595
| | - Keita Hanada
- Department of Gastrointestinal Surgery, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
- Department of Surgery, Rakuwakai Otowa Hospital, Kyoto 607-8062, Japan
| | - Kazutaka Obama
- Department of Gastrointestinal Surgery, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
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Meisner JW, Kamran A, Staffa SJ, Mohammed S, Yasuda JL, Ngo P, Manfredi M, Zurakowski D, Jennings RW, Hamilton TE, Zendejas B. Qualitative features of esophageal fluorescence angiography and anastomotic outcomes in children. J Pediatr Surg 2022:S0022-3468(22)00455-9. [PMID: 35934523 DOI: 10.1016/j.jpedsurg.2022.07.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/29/2022] [Accepted: 07/06/2022] [Indexed: 10/17/2022]
Abstract
BACKGROUND Indocyanine green (ICG) is commonly used to assess perfusion, but quality defining features are lacking. We sought to establish qualitative features of esophageal ICG perfusion assessments, and develop an esophageal anastomotic scorecard to risk-stratify anastomotic outcomes. METHODS Single institution, retrospective analysis of children with an intraoperative ICG perfusion assessment of an esophageal anastomosis. Qualitative perfusion features were defined and a perfusion score developed. Associations between perfusion and clinical features with poor anastomotic outcomes (PAO, leak or refractory stricture) were evaluated with logistic and time-to-event analyses. Combining significant features, we developed and tested an esophageal anastomotic scorecard to stratify PAO risk. RESULTS From 2019 to 2021, 53 children (median age 7.4 months) underwent 55 esophageal anastomoses. Median (IQR) follow-up was 14 (10-19.9) months; mean (SD) perfusion score was 13.2 (3.4). Fifteen (27.3%) anastomoses experienced a PAO and had significantly lower mean perfusion scores (11.3 (3.3) vs 14.0 (3.2), p = 0.007). Unique ICG perfusion features, severe tension, and primary or rescue traction-induced esophageal lengthening [Foker] procedures were significantly associated with PAO on both logistic and Cox regression. The scorecard (range 0-7) included any Foker (+2), severe tension (+1), no arborization on either segment (+1), suture line hypoperfusion >twice expected width (+2), and segmental or global areas of hypoperfusion (+1). A scorecard cut-off >3 yielded a sensitivity of 73% and specificity of 93% (AUC 0.878 [95%CI 0.777 to 0.978]) in identifying a PAO. CONCLUSIONS A scoring system comprised of qualitative ICG perfusion features, tissue quality, and anastomotic tension can help risk-stratify esophageal anastomotic outcomes accurately. LEVELS OF EVIDENCE Diagnostic - II.
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Affiliation(s)
- Jay W Meisner
- Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - Ali Kamran
- Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - Steven J Staffa
- Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States; Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - Somala Mohammed
- Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - Jessica L Yasuda
- Department of Gastroenterology, Hepatology, and Nutrition, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - Peter Ngo
- Department of Gastroenterology, Hepatology, and Nutrition, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - Michael Manfredi
- Department of Gastroenterology, Hepatology, and Nutrition, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - David Zurakowski
- Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States; Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - Russell W Jennings
- Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - Thomas E Hamilton
- Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - Benjamin Zendejas
- Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States.
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Guo J, Sim SKR, Teo NZ, Ngu JCY. Pitfalls of indocyanine green perfusional assessment in colorectal anastomosis. ANZ J Surg 2022; 92:1602-1605. [PMID: 35950667 DOI: 10.1111/ans.17910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 07/03/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Jiwei Guo
- Department of General Surgery, Changi General Hospital, Singapore
| | | | - Nan-Zun Teo
- Department of General Surgery, Changi General Hospital, Singapore
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Kashchenko VA, Zaytsev VV, Ratnikov VA, Kamshilin AA. Intraoperative visualization and quantitative assessment of tissue perfusion by imaging photoplethysmography: comparison with ICG fluorescence angiography. BIOMEDICAL OPTICS EXPRESS 2022; 13:3954-3966. [PMID: 35991934 PMCID: PMC9352280 DOI: 10.1364/boe.462694] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/09/2022] [Accepted: 06/09/2022] [Indexed: 05/02/2023]
Abstract
Intraoperative monitoring of tissue perfusion is of great importance for optimizing surgery and reducing postoperative complications. To date, there is no standard procedure for assessing blood circulation in routine clinical practice. Over the past decade, indocyanine green (ICG) fluorescence angiography is most commonly used for intraoperative perfusion evaluation. Imaging photoplethysmography (iPPG) potentially enables contactless assessment of the blood supply to organs. However, no strong evidence of this potential has been provided so far. Here we report results of a comparative assessment of tissue perfusion obtained using custom-made iPPG and commercial ICG-fluorescence systems during eight different gastrointestinal surgeries. Both systems allow mapping the blood-supply distribution over organs. It was demonstrated for the first time that the quantitative assessment of blood perfusion by iPPG is in good agreement with that obtained by ICG-fluorescence imaging in all surgical cases under study. iPPG can become an objective quantitative monitoring system for tissue perfusion in the operating room due to its simplicity, low cost and no need for any agent injections.
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Affiliation(s)
- Victor A. Kashchenko
- First Surgical Department, North-Western District Scientific and Clinical Center named after L.G. Sokolov of the Federal Medical and Biological Agency, 4 Kultury Pr., St. Petersburg 194291, Russia
- Department of Faculty Surgery, Saint Petersburg State University, 8A 21st Vasilyevskogo Ostrova Line, Saint-Petersburg 199106, Russia
| | - Valeriy V. Zaytsev
- Laboratory of New Functional Materials for Photonics, Institute of Automation and Control Processes of the Far-Eastern Branch of the Russian Academy of Sciences, 5 Radio str., Vladivostok 690041, Russia
| | - Vyacheslav A. Ratnikov
- Department of Radiology, North-Western District Scientific and Clinical Center named after L.G. Sokolov of the Federal Medical and Biological Agency, 4 Kultury Pr., St. Petersburg 194291, Russia
- Institute of Advanced Medical Technologies, Saint Petersburg State University, 8A 21st Vasilyevskogo Ostrova Line, Saint-Petersburg 199106, Russia
| | - Alexei A. Kamshilin
- Laboratory of New Functional Materials for Photonics, Institute of Automation and Control Processes of the Far-Eastern Branch of the Russian Academy of Sciences, 5 Radio str., Vladivostok 690041, Russia
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Deep Learning to Measure the Intensity of Indocyanine Green in Endometriosis Surgeries with Intestinal Resection. J Pers Med 2022; 12:jpm12060982. [PMID: 35743768 PMCID: PMC9224804 DOI: 10.3390/jpm12060982] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 06/11/2022] [Accepted: 06/15/2022] [Indexed: 01/03/2023] Open
Abstract
Endometriosis is a gynecological pathology that affects between 6 and 15% of women of childbearing age. One of the manifestations is intestinal deep infiltrating endometriosis. This condition may force patients to resort to surgical treatment, often ending in resection. The level of blood perfusion at the anastomosis is crucial for its outcome, for this reason, indocyanine green (ICG), a fluorochrome that green stains the structures where it is present, is injected during surgery. This study proposes a novel method based on deep learning algorithms for quantifying the level of blood perfusion in anastomosis. Firstly, with a deep learning algorithm based on the U-Net, models capable of automatically segmenting the intestine from the surgical videos were generated. Secondly, blood perfusion level, from the already segmented video frames, was quantified. The frames were characterized using textures, precisely nine first- and second-order statistics, and then two experiments were carried out. In the first experiment, the differences in the perfusion between the two-anastomosis parts were determined, and in the second, it was verified that the ICG variation could be captured through the textures. The best model when segmenting has an accuracy of 0.92 and a dice coefficient of 0.96. It is concluded that segmentation of the bowel using the U-Net was successful, and the textures are appropriate descriptors for characterization of the blood perfusion in the images where ICG is present. This might help to predict whether postoperative complications will occur during surgery, enabling clinicians to act on this information.
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The Use of near Infra-Red Radiation Imaging after Injection of Indocyanine Green (NIR-ICG) during Laparoscopic Treatment of Benign Gynecologic Conditions: Towards Minimalized Surgery. A Systematic Review of Literature. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58060792. [PMID: 35744056 PMCID: PMC9231050 DOI: 10.3390/medicina58060792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 06/01/2022] [Accepted: 06/07/2022] [Indexed: 11/17/2022]
Abstract
Background and Objectives: To assess the use of near infrared radiation imaging after injection of indocyanine green (NIR–ICG) during laparoscopic treatment of benign gynecologic conditions. Materials and Methods: A systematic review of the literature was performed searching 7 electronic databases from their inception to March 2022 for all studies which assessed the use of NIR–ICG during laparoscopic treatment of benign gynecological conditions. Results: 16 studies (1 randomized within subject clinical trial and 15 observational studies) with 416 women were included. Thirteen studies assessed patients with endometriosis, and 3 studies assessed non-endometriosis patients. In endometriosis patients, NIR–ICG use appeared to be a safe tool for improving the visualization of endometriotic lesions and ureters, the surgical decision-making process with the assessment of ureteral perfusion after conservative surgery and the intraoperative assessment of bowel perfusion during recto-sigmoid endometriosis nodule surgery. In non-endometriosis patients, NIR–ICG use appeared to be a safe tool for evaluating vascular perfusion of the vaginal cuff during total laparoscopic hysterectomy (TLH) and robotic-assisted total laparoscopic hysterectomy (RATLH), and intraoperative assessment of ovarian perfusion in adnexal torsion. Conclusions: NIR–ICG appeared to be a useful tool for enhancing laparoscopic treatment of some benign gynecologic conditions and for moving from minimally invasive surgery to minimalized surgery. In particular, it might improve treatment of endometriosis (with particular regard to deep infiltrating endometriosis), benign diseases requiring TLH and RATLH and adnexal torsion. However, although preliminary findings appear promising, further investigation with well-designed larger studies is needed.
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Maione F, Manigrasso M, Chini A, Vertaldi S, Anoldo P, D’Amore A, Marello A, Sorrentino C, Cantore G, Maione R, Gennarelli N, D’Angelo S, D’Alesio N, De Simone G, Servillo G, Milone M, De Palma GD. The Role of Indocyanine Near-Infrared Fluorescence in Colorectal Surgery. Front Surg 2022; 9:886478. [PMID: 35669252 PMCID: PMC9163431 DOI: 10.3389/fsurg.2022.886478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 05/02/2022] [Indexed: 11/30/2022] Open
Abstract
Purposes The aim of this study was to evaluate the importance of Indocyanine Green in control of anastomosis perfusion and on anastomotic leakage rates during laparoscopic and robotic colorectal procedures. Methods A retrospective review of patients who underwent elective minimally invasive surgery for colorectal cancer from 1 January 2018 to 31 December 2020 was performed. All patients underwent Near-Infrared Fluorescence-Indocyanine Green system in two moments: before performing the anastomosis and after completing the anastomotic procedure. Primary outcomes were the rate of intraoperative change in the surgical resection due to an inadequate vascularization and the rate of postoperative anastomotic leakage. Secondary outcomes were the postoperative complications, both medical and surgical (intra-abdominal bleeding, anastomotic leakage). Results Our analysis included 93 patients. Visible fluorescence was detected in 100% of the cases. In 7 patients (7.5%), the planned site of resection was changed due to inadequate perfusion. The mean extension of the surgical resection in these 7 patients was 2.2 ± 0.62. Anastomotic leakage occurred in 2 patients (2.1%). Other complications included 8 postoperative bleedings (8.6%) and 1 pulmonary thromboembolism. Conclusions The intraoperative use of Near-Infrared Fluorescence-Indocyanine Green in colorectal surgery is safe, feasible, and associated with a substantial reduction in postoperative anastomotic leakage rate.
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Affiliation(s)
- Francesco Maione
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
- Correspondence: Francesco Maione ; Alessia Chini
| | - Michele Manigrasso
- Department of Advanced Biomedical Sciences, Federico II University of Naples, Naples, Italy
| | - Alessia Chini
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
- Correspondence: Francesco Maione ; Alessia Chini
| | - Sara Vertaldi
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Pietro Anoldo
- Department of Advanced Biomedical Sciences, Federico II University of Naples, Naples, Italy
| | - Anna D’Amore
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Alessandra Marello
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Carmen Sorrentino
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Grazia Cantore
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Rosa Maione
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Nicola Gennarelli
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Salvatore D’Angelo
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Nicola D’Alesio
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Giuseppe De Simone
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Giuseppe Servillo
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Marco Milone
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
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Spagnolo E, Zapardiel I, Gorostidi M. Role of fluorescence imaging for intraoperative intestinal assessment in gynecological surgery: a systematic review. MINIM INVASIV THER 2022; 31:992-999. [DOI: 10.1080/13645706.2022.2064715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Emanuela Spagnolo
- Gynecology Department, La Paz University Hospital – IdiPAZ, Madrid, Spain
| | - Ignacio Zapardiel
- Gynecological Oncology Unit, La Paz University Hospital – IdiPAZ, Madrid, Spain
| | - Mikel Gorostidi
- Gynecology Unit, Donostia University Hospital – Biodonostia Health Research Institute, Basque Country University, San Sebastian, Spain
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