Fig. 5

Reduced scattering coefficient spectra from the values obtained using Eq. (4). Reduced scattering coefficient spectra of normal (Norm) and dehydrated (Dehyd) epidermis–dermis (Epi), \(\mu_{s}^{{{\prime }epidermis}}\) (λ) and subcutaneous fat layer (Subcut), \(\mu_{s}^{{{\prime }subcutaneous}}\) (λ) and included reduced scattering coefficient spectra of normal hydrated muscle layer, \(\mu_{s}^{{{{{\prime }muscle}} }}\) (λ)