Table 1.

Fitting Parameters for Calibration Curve

Color Channel	a	b	c
Red	− 582.230	− 436.180	0.757
Green	− 996.825	− 727.023	0.730
Blue	− 1633.021	− 773.091	0.475

A rational function, y = a + (b/(x – c)), was used to fit the data where y is the dose and x is the NOD. Based on these parameters, a calibration curve can be created for each color channel