ICG indocyanine green is a three carbon cyanine dye with good water solubility and a molecular weight of 775. Indocyanine green can almost completely bind to plasma proteins in plasma and whole blood, ensuring that it remains almost completely in Xueguan and is not easily diffused outward. Indocyanine green (ICG) is a near-infrared imaging reagent currently approved by the US Food and Drug Administration (FDA) for clinical use. ICG is a three carbon cyanine dye with near-infrared characteristic absorption peaks, emission wavelengths between 795 and 845nm, and has amphiphilic structures that are both hydrophilic and lipophilic. Near infrared light has a greater penetration depth in tissues and is less affected by biological tissue background, Due to its near-infrared absorption and emission fluorescence characteristics, ICG can be used as an excellent tissue penetrating agent in vivo.
