For dry gangrene, vascular surgeons normally do angiography (a radiologic examine with dye that shows arterial blood circulation in tissues, also termed arteriogram) to see the extent of ongoing or possible arterial blood loss to tissue. Gangrene normally turns the affected skin a greenish-black coloration. The word gangrene is not connected https://www.sgvascularctr.com/what-is-a-gangrene/