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. Author manuscript; available in PMC: 2010 Jul 1.
Published in final edited form as: Physiol Meas. 2009 May 13;30(7):529–540. doi: 10.1088/0967-3334/30/7/001

Figure 2.

Figure 2

(a) Optical factors shown on the representative changes in oxyhemoglobin during 2 h of tourniquet application. Three optical factors were defined and correlated with histopathological results: (1) the ratio of Δ[HbO2]_I to Δ[HbO2]_R (Δ[HbO2]_I/Δ[HbO2]_R), (2) the time duration between the end point of ischemia and the first peak of Δ[HbO2] during reperfusion (Time_Peak) and (3) the time constant value during the initial 20 min of reperfusion (τ). (b) Δ[HbO2] during reperfusion plotted in a semi-logarithmic scale.