Indocyanine green is widely used in medical imaging, particularly in angiography to visualize blood vessels and assess blood flow. It helps in diagnosing conditions like retinal disorders and liver function. In surgery, it aids in identifying cancerous tissues and assessing the success of tumor removal. Additionally, it is used in cardiology to measure cardiac output and detect heart abnormalities. Its fluorescence properties make it valuable in ophthalmic procedures for imaging the retina and choroid. Overall, it is a crucial tool in diagnostics and surgical guidance across various medical fields.