Table 4. Comparison of the relative and maximum standard deviation values for the PpIX phantoms, normalized to the mean in each case, using 3 different algorithms.

Correction method	Relative standard deviation (%)	Maximum standard deviation (%)
Measured fluorescence	107	303
Born-normalized fluorescencea	35.7	102
qFI	15.4	24.2
qFSb	10.1	15.2

^a Based on the calibrated SFDI-derived reflectance obtained from Eq. (4) and Eq. (5)

^bUsing the qFS point probe system.