Extrahepatic cholangiography in near-infrared II window with the clinically approved fluorescence agent indocyanine green: a promising imaging technology for intraoperative diagnosis
| Autor: | Jing Zhou, Zhe Feng, Yifan Wang, Hui Lin, Dingwei Xue, Junjie Xu, Di Wu, Jun Qian, Xiujun Cai |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Indocyanine Green
bile duct injury Swine diagnosis medicine.medical_treatment Medicine (miscellaneous) 02 engineering and technology 010402 general chemistry 01 natural sciences Imaging phantom chemistry.chemical_compound Mice Cholangiography Monitoring Intraoperative Medicine Animals Humans Biliary Tract Pharmacology Toxicology and Pharmaceutics (miscellaneous) neoplasms Mice Inbred ICR medicine.diagnostic_test business.industry Bile duct Near-infrared spectroscopy Optical Imaging technology industry and agriculture 021001 nanoscience & nanotechnology equipment and supplies 0104 chemical sciences Rats Disease Models Animal medicine.anatomical_structure surgical procedures operative chemistry Cholecystectomy Laparoscopic Biliary tract Imaging technology near-infrared II cholangiography Cholecystectomy 0210 nano-technology business Nuclear medicine Indocyanine green fluorescence-guided surgery Research Paper |
| Zdroj: | Theranostics |
| ISSN: | 1838-7640 |
| Popis: | Rationale: Biliary tract injury remains the most dreaded complication during laparoscopic cholecystectomy. New intraoperative guidance technologies, including near-infrared (NIR) fluorescence cholangiography with indocyanine green (ICG), are under comprehensive evaluation. Previous studies had shown the limitations of traditional NIR light (NIR-I, 700-900 nm) in visualizing the biliary tract structures in specific clinical situations. The aim of this study was to evaluate the feasibility of performing the extrahepatic cholangiography in the second NIR window (NIR-II, 900-1700 nm) and compare it to the conventional NIR-I imaging. Methods: The absorption and emission spectra, as well as fluorescence intensity and photostability of ICG-bile solution in the NIR-II window were recorded and measured. In vitro intralipid® phantom imaging was performed to evaluate tissue penetrating depth in NIR-I and NIR-II window. Different clinical scenarios were modeled by broadening the penetration distance or generating bile duct injuries, and bile duct visualization and lesion site diagnosis in the NIR-II window were evaluated and compared with NIR-I imaging. Results: The fluorescence spectrum of ICG-bile solution extends well into the NIR-II region, exhibiting intense emission value and excellent photostability sufficient for NIR-II biliary tract imaging. Extrahepatic cholangiography using ICG in the NIR-II window obviously reduced background signal and enhanced penetration depth, providing more structural information and improved visualization of the bile duct or lesion location in simulated clinical scenarios, outperforming the NIR-I window imaging. Conclusions: The conventional clinically approved agent ICG is an excellent fluorophore for NIR-II bile duct imaging. Fluorescence cholangiography with ICG in the NIR-II window could provide adequate visualization of the biliary tract structures with increased resolution and penetration depth and might be a valid option to increase the safety of cholecystectomy in difficult cases. |
| Databáze: | OpenAIRE |
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