Application of real-time virtual sonography surgical navigation combined with indocyanine green fluorescence imaging technology during anatomical liver resection / 中华肝胆外科杂志

ABSTRACT

Objective:To analyze the clinical effect of real-time virtual sonography (RVS) surgical navigation combined with indocyanine green fluorescence imaging technology in the anatomical liver segmentectomy for hepatocellular carcinoma (HCC).Methods:The clinical data of 35 patients who underwent anatomical liver segmentectomy using RVS surgical navigation combined with indocyanine green fluorescence imaging technology in the Department of Hepatobiliary Surgery of Peking University International Hospital from January 2020 to January 2022 were retrospectively analyzed. There were 22 males and 13 females, aged (60.0±10.0) years. RVS is real-time virtual sonography, which fuses real-time intraoperative ultrasound images with corresponding preoperative CT or MRI images to guide the surgical plane. Methods of operation, time of operation, intraoperative blood loss, operative margin, hospital stay and postoperative complications were analyzed. Postoperative complications were graded by Clavien-Dindo system. The 1-year overall survival and tumor-free survival rates of patients were followed up by outpatient or telephone review.Results:Anatomical liver segmentectomy was performed on 36 patients, including 1 patient (2.9%) of segment Ⅱ, 1 patient (2.9%) of segment Ⅲ, 5 patients (14.3%) of segment Ⅳ, 6 patients (17.1%) of segment Ⅴ, 10 patients (28.6%) of segment Ⅵ, 7 patients (20.0%) of segment Ⅶ, 4 patients (11.4%) of segment Ⅷ, and 1 patient (2.9%) of segments Ⅴ+ Ⅷ. The operation time of 35 patients was (310.2±81.6) min, with an intraoperative blood loss of [ M( Q1, Q3)] 390.0(250.0, 500.0) ml. The hospital stay was (11.6±2.1) d. There was no postoperative death. Postoperative complications occurred in 3 cases (8.6%), of which 2 cases (5.7%) were ascites, Clavien-Dindo grade Ⅰ; Postoperative hemorrhage occurred in 1 case (2.9%), Clavien-Dindo grade Ⅱ. HCC was confirmed by pathology in all cases, and the operative margins were negative. The median follow-up time was 14 months (12 to 20 months). The 1-year overall survival rate after surgery was 100.0%(35/35), three patients (8.6%) had tumor recurrence, and the 1-year tumor-free survival rate was 91.4% (32/35). Conclusion:RVS surgical navigation combined with indocyanine green fluorescence imaging technology could be feasible in anatomical segmental hepatectomy for HCC.