Table 1.

Characters of ICG and ICG-Au nano-particles for diagnosis

Name	Characters
ICG [33]	Detection tumor: > 1 cm
Au@liposome-ICG [33]	Detection tumor: millimeter level
ICG-loaded Au@SiO2 [34]	Distance tumor to normal tissue: 0.5 mm
ICG-HSA-Au complex [35]	At least 5-fold brighter than ICG