can lead to limb ischemia and amputations.

Chronic wounds or ulcers on the feet (unable to heal after 8 weeks due to poor blood flow) are treated with balloon angioplasty to re-open blocked blood vessels in the legs. During such procedures, the Pedra device gives the physician intra-operative instantaneous feedback on blood perfusion of foot tissue. It is this blood perfusion at the tissue level that is critical for wound healing. This is the first time that physicians, using the Pedra device, are able to achieve an accurate objective and quantitative measure of blood perfusion while the patient is still in the operating theater. No other technology does this, as X-ray angiograms only image macrovascular blood flow, which can lead to misleading conclusions, resulting in adverse outcomes or repeat procedures.