Ultrasonography‐guided hepatic tumor resection using a real‐time virtual sonography with indocyanine green navigation (with videos)

Purpose For hepatic tumors that cannot be identified on routine ultrasonography (US), we marked the target area using real-time virtual sonography (RVS) with indocyanine green (ICG)–ethanol (1:100) during surgery, and performed hepatic resection while observing the fluorescence.