吲哚菁绿荧光造影在结直肠外科手术中的应用进展

随着医学模式的转变、外科技术和影像技术的快速发展,吲哚菁绿荧光造影技术被越来越广泛地用于临床,其在结直肠外科手术中获得了初步良好的效果。笔者检索PubMed、Web of Science和万方、中国知网数据库中有关吲哚菁绿分子荧光影像技术应用于结直肠外科领域的研究文献,并行归纳总结,以综述吲哚菁绿荧光造影技术的应用现状及不足。     

脑动脉瘤术中吲哚菁绿相关问题及麻醉管理

背景 整合显微镜的吲哚菁绿(indocyanine green,ICG)荧光造影技术应运而生,因其价廉、操作简单、可重复等优点,现已广泛应用于评价颅内动脉瘤夹闭手术的夹闭效果,但临床上也会有过敏、一过性SpO2下降、渗漏等相关问题,给麻醉医师围手术期工作带来新的挑战.目的 为ICG在动脉瘤术中应用的麻醉管理提供参考.内容 综述ICG血管造影在动脉瘤术中的研究进展以及可能出现的副作用及其防止策略.趋向 ICG血管造影能够安全、有效地评估动脉瘤夹闭效果,将广泛应用于颅内动脉瘤夹闭手术.     

吲哚菁绿荧光显影技术在腹腔镜胆囊手术中的应用

目的探讨吲哚菁绿(indocyanine green,ICG)荧光显影技术在腹腔镜胆囊手术中的临床应用价值。方法前瞻性选取术前诊断为胆囊结石合并急性胆囊炎、慢性萎缩性胆囊炎或残余胆囊的56例病人,其中48例于气腹建立后经外周静脉注射ICG,按剂量不同分为0.5 mg组、1 mg组、5 mg组和10 mg组四组(每组各12例);另外8例于术中根据目标胆道容积经胆道注射浓度为0.025 mg/ml ICG,观察术中目标胆管荧光显影的时间、荧光强度及对手术的指导作用。结果 48例经外周静脉注射ICG的病人,均成功实施腹腔镜胆囊切除术,除0.5 mg组2例病人显影失败外,余均显影成功。0.5 mg组、1 mg组、5 mg组、10 mg组显影时间分别为(53.60±13.73)min、(42.83±7.80)min、(24.92±6.95)min、(23.17±8.11)min。显影时间显示:0.5 mg组长于1 mg组(P=0.01),1 mg组长于5 mg组(P<0.001),差异均具有统计学意义;5 mg组与10 mg组比较差异无统计学意义(P=0.647)。0.5 mg组、1mg组...     

Application of indocyanine green in surgery: A review of current evidence and implementation in trauma patients

Background: Modern surgical medicine strives to manage trauma while improving outcomes using functional imaging. Identification of viable tissues is crucial for the surgical management of polytrauma and burn patients presenting with soft tissue and hollow viscus injuries. Bowel anastomosis after trauma-related resection is associated with a high rate of leakage. The ability of the surgeon’s bare eye to determine bowel viability remains limited, and the need for a more standardized objective assessment has not yet been fulfilled. Hence, there is a need for more precise diagnostic tools to enhance surgical evaluation and visualization to aid early diagnosis and timely management to minimize trauma-associated complications. Indocyanine green (ICG) coupled with fluorescence angiography is a potential solution for this problem. ICG is a fluorescent dye that responds to near-infrared irradiation. Methods: We conducted a narrative review to address the utility of ICG in the surgical management of patients with trauma as well as elective surgery. Discussion: ICG has many applications in different medical fields and has recently become an important clinical indicator for surgical guidance. However, there is a paucity of information regarding the use of this technology to treat traumas. Recently, angiography with ICG has been introduced in clinical practice to visualize and quantify organ perfusion under several conditions, leading to fewer cases of anastomotic insufficiency. This has great potential to bridge this gap and enhance the clinical outcomes of surgery and patient safety. However, there is no consensus on the ideal dose, time, and manner of administration nor the indications that ICG provides a genuine advantage through greater safety in trauma surgical settings. Conclusions: There is a scarcity of publications describing the use of ICG in trauma patients as a potentially useful strategy to facilitate intraoperative decisions and to limit the extent of surgical resection. This review will improve our understanding of the utility of intraoperative ICG fluorescence in guiding and assisting trauma surgeons to deal with the intraoperative challenges and thus improve the patients’ operative care and safety in the field of trauma surgery.     

Combined application of Indocyanine green (ICG) and laser lead to targeted tumor cell destruction

Purpose

Precise excision of neuroblastoma is challenging, especially when tumors adhere to vital structures. Indocyanine green (ICG), an FDA-approved dye with absorption peaking at 800?nm, can absorb the near IR laser energy and release heat in the dyed tissue. We hypothesize that by injecting ICG at tumor sites followed by precise laser application, tumor cell death can be selectively targeted.

吲哚菁绿荧光成像技术在肝胆外科的应用进展

吲哚菁绿(indocyanine green,ICG)是一种水溶性花青染料,在近红外光激发下可发出荧光。近年来,ICG荧光成像技术在肝胆外科手术中得到广泛应用,尤其在肿瘤检测识别、肝切缘界定、肝段染色定位、胆道显像及胆漏检测等方面具有广阔的前景。此文通过回顾分析PubMed、Embase和Medline数据库中吲哚菁绿荧光成像技术在肝切除术的最新临床研究,结合作者单位实际操作经验,阐述吲哚菁绿荧光成像技术在肝胆外科手术中的应用及研究进展。     

吲哚菁绿分子荧光影像在原发性肝癌的应用进展

随着数字智能化技术的普及,吲哚菁绿(indocyanine green,ICG)分子荧光影像技术已得到不断的发展与完善,实现了对肝脏肿瘤的精确边界界定、微小癌灶侦测以及实时导航肝切除。ICG分子荧光影像作为一种新兴荧光成像技术,在提高手术精准性、降低手术风险、减少术后复发等方面发挥了积极作用,为肝脏肿瘤的外科诊疗提供了新的策略与手段。此文结合国内外研究现状和作者自身经验,介绍了ICG分子荧光影像在肝脏肿瘤的应用及进展。     

Intraoperative use of dynamic infrared thermography and indocyanine green fluorescence video angiography to predict partial skin flap loss

Inadequate perfusion is the most common cause of partial flap loss in reconstructive surgery. Intraoperative monitoring of flap perfusion may prevent such loss. This study compared indocyanine green fluorescence angiography (ICG-FA) and dynamic infrared thermography (DIRT) in their ability to predict intraoperatively the percentage of flap survival in a caudally based McFarlane flap in 10 male Wistar rats. The intraoperative images of both techniques were subjectively and objectively analysed. The percentage of flap survival, as judged from the digital colour photographs 7 days post-operatively, was 69 ± 3%. Objective analysis of flap survival based on intraoperative DIRT and ICG-FA (74 vs 63%, respectively) correlated quite well with the subjective measurements (75 ± 2 vs 59 ± 4%, respectively). However, intraoperative ICG-FA images underestimated flap survival by 6–10%, while intraoperative DIRT images overestimated the flap survival by 5–6%. The authors conclude that intraoperative use of ICG-FA and DIRT can provide valuable information on areas with inadequate perfusion as long as their limitations are respected.     

吲哚菁绿荧光成像在胸腔镜食管癌手术中的应用

目的评价吲哚菁绿(ICG)荧光成像在胸腔镜食管癌手术中应用的价值。 方法随机选取32例食管癌患者作为实验组,在胸腔镜手术中利用ICG荧光成像技术,判断管状胃血液灌注情况,选择灌注良好的区域完成吻合。术后根据临床症状和影像学来判定吻合口漏是否发生,并记录吻合口瘘发生情况。同期选取38例常规手术组食管癌患者作为对照组。 结果全组未出现由于注射ICG而引起的死亡等不良反应。所有患者采用经纵隔途径食管胃颈部吻合方式。器械吻合52例(实验组24例,对照组28例);手工吻合18例(实验组8例,对照组10例),两组患者的吻合方式无统计学差异(P>0.05)。临床症状和影像学证实的吻合口漏共7例,其中实验组2例(6.25%),显著低于同期不用此项技术的对照组5例(13.15%)。 结论ICG荧光素成像是一种安全可行的技术,术中通过一个可视化的效果,评估管状胃的血流灌注情况,有助于降低食管癌手术后吻合口瘘的发生。     

The efficacy of transbronchial indocyanine green instillation for fluorescent-guided wedge resection

 Open in a separate windowOBJECTIVESThe purpose of this study was to investigate the feasibility of lung wedge resection by combining 3-dimensional (3D) image analysis with transbronchial indocyanine green (ICG) instillation, in order to delineate the intended area for resection.METHODSFrom December 2017 to July 2020, 28 patients undergoing wedge resection (17 primary lung cancers, 11 metastatic lung tumours) were enrolled, and fluorescence-guided wedge resection was attempted. Virtual sublobar resections were created preoperatively for each patient using a 3D Image Analyzer. Surgical margins were measured in each sublobar resection simulation in order to select the most optimal surgical resection area. After transbronchial instillation of ICG, near-infrared thoracoscopic visualization allowed matching of the intended area for resection to the virtual sublobar resection area. To investigate the effectiveness of ICG instillation, the clarity of the ICG-florescent border was evaluated, and the distance from the true tumour to the surgical margins was compared to that of simulation.RESULTSMean tumour diameter was 12.4 ± 4.3 mm. The entire targeted tumour was included in resected specimens of all patients (100% success rate). The shortest distances to the surgical margin via 3D simulation and by actual measurement of the specimen were11.4 ± 5.4 and 12.2 ± 4.1 mm, respectively (P = 0.285) and were well correlated (R² = 0.437). While all specimens had negative malignant cells at the surgical margins, one loco-regional recurrence was observed secondary to the dissemination of neuroendocrine carcinoma.CONCLUSIONSICG-guided lung wedge resection after transbronchial ICG instillation and preoperative 3D image analysis allow for adequate negative surgical margins, providing decreased risk of local recurrence.     

Hyperspectral imaging and indocyanine green fluorescence angiography in acute mesenteric ischemia: A case report on how to visualize intestinal perfusion

Introduction and importanceAcute mesenteric ischemia is a challenging acute condition which is often caused by occlusion of an intestinal vessel. Therapeutic algorithms include revascularization of the occluded vessel and a surgical procedure to remove necrotic intestine. Sometimes necrotic intestine is hard to identify visually. Therefore, tools such as hyperspectral imaging (HSI) and indocyanine green fluorescence angiography (ICGFA) might be helpful for objective intraoperative evaluation of intestinal perfusion.Case presentationWe present a case of an 80-year-old woman with an acute superior mesenteric artery occlusion and subsequent intestinal gangrene. After endovascular arterial revascularization, we performed an explorative laparotomy in which we assessed intestinal perfusion by HSI and ICGFA. Both HSI and ICGFA showed a sharp perfusion borderline in the proximal jejunum. The distal intestine showed low tissue oxygenation (HSI) and inhomogeneous perfusion (ICGFA).Clinical discussionBoth methods showed reproducible results for tissue perfusion and, thus, could provide additional information on the extent of necrotic bowel with need for resection. Therefore, both modalities might be used in future image-guided surgery in cases of acute mesenteric ischemia where visual discrimination of intestinal perfusion is challenging in order to resect as much bowel as necessary to improve patient outcome. Both methods exert different strengths: i.e. ICGFA is real-time angiography, whereas HSI may expose intestinal necrosis in spectroscopy.ConclusionWe show, for the first time, simultaneous imaging of HSI and ICGFA in a case of acute mesenteric ischemia. Both imaging modalities reveal similar results reliably concerning intestinal perfusion.     

Usefulness of intraoperative fluorescence imaging to evaluate local anatomy in hepatobiliary surgery

BACKGROUND/PURPOSE: One of the major complications encountered in hepatobiliary surgery is the incidence of bile duct and blood vessel injuries. It is sometimes difficult during surgery to evaluate the local anatomy corresponding to hepatic arteries and bile ducts. We investigated the potential utility of an infrared camera system as a tool for evaluating local anatomy during hepatobiliary surgery. METHODS: An infrared camera system was used to detect indocyanine green fluorescence in vitro. We also employed this system for the intraoperative fluorescence imaging of the arteries and biliary system in a pig. Further, we evaluated blood flow in the hepatic artery, portal vein, and liver parenchyma during a human liver transplant and we investigated local anatomy in patients undergoing cholecystectomy. RESULTS: Fluorescence confirmed that indocyanine green was distributed in serum and bile. In the pig study, we confirmed the fluorescence of the biliary system for more than 1 h. In the liver transplant recipient, blood flow in the hepatic artery and portal vein was confirmed around the anastomosis. In most of the patients undergoing cholecystectomy, fluorescence was observed in the gallbladder, cystic and common bile ducts, and hepatic and cystic arteries. CONCLUSIONS: Intraoperative fluorescence imaging in hepatobiliary surgery facilitates better understanding of the anatomy of arteries, the portal vein, and bile ducts.