Figure 3From: Improving the accuracy of a solid spherical source radius and depth estimation using the diffusion equation in fluorescence reflectance mode a) The diffuse image of a QD source of radius 6 mm in the depth of 3.5 mm at 620 nm. b) The SRD was extracted by using the bandpass filter. c) The full width at half maximum (FWHM) of the SRD was obtained from the filtered SRD using Gaussian fitting.Back to article page