Fig. 4.

Equilibrium oxygen maps showing a decrease of tissue oxygen consumption (expressed as normalized % consumption) by compromised tissue on freshly excised porcine skin obtained using intensity- and lifetime-based measurement approaches. Blue indicates higher oxygen consumption by tissues. Red indicates lower oxygen consumption (provides a visual “warning” for physiologically compromised tissue in clinical applications). Dashed line indicates boundaries of bandage-covered region. Images shown for A) Circular burn imaged using intensity approach; B) Control skin imaged using intensity approach; C) Circular burn imaged using lifetime approach; D) Control skin imaged using lifetime approach.