In physiology, perfusion is the process of delivery of blood to a capillary bed in the biological tissue. The word is derived from the French verb "perfuser" meaning to "pour over or through."
Tests of adequate perfusion are a part of the patient assessment process performed by medical or emergency personnel. The most common methods include evaluating skin color, temperature, condition and capillary refill.
Read more about Perfusion: Overperfusion and Underperfusion, Discovery, Measurement Using Nuclear Medicine Methods, Measurement Using MRI, Measurement Using CT