For dry gangrene, vascular surgeons typically do angiography (a radiologic study with dye that demonstrates arterial blood move in tissues, also termed arteriogram) to begin to see the extent of ongoing or opportunity arterial blood reduction to tissue. Damp gangrene (also termed moist gangrene) is among the most perilous type https://www.sgvascularctr.com/what-is-a-gangrene/