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. Author manuscript; available in PMC: 2014 Oct 1.
Published in final edited form as: Lasers Surg Med. 2014 Mar 20;46(4):310–318. doi: 10.1002/lsm.22235

TABLE 1.

Calculated α Values for Combined Treatment

PTT PTT PTT
PDT fluence 0.5 W 14 W/cm2 28 W/cm2
0.25 J/cm2 1.23 ± 0.14 2.29 ± 0.26 0.96 ± 0.17
0.5 J/cm2 0.98 ± 0.11 1.83 ± 0.16 0.59 ± 0.06

α Value was calculated using the equation (SFa × SFb)/SFab. a is PDT survival; b is PTT survival. α Values >1 convey synergistic effects, values less than 1 indicate antagonistic effects, and values equal to 1 show no or additive effects.

Bolded values signify values greater than 1, which demonstrate synergy between PDT and PTT.