In addition, fluorescence an nonlinear scattering signals can be detected and localized within a subject by such application of radiation through an optical fiber.
The methods are applicable to image nonlinear scattering sources for both electromagnetic and elastic waves, and combinations of these.
One or both of scattered and transmitted components from the HF pulse are picked up and further processed to suppress pulse reverberation noise and enhance nonlinear scattering components.
The high frequency pulse is used for the image reconstruction and the low frequency pulse is used to manipulate the nonlinear scattering and/or propagation properties of the high frequency pulse.
The present invention includes a method of modeling multicomponent nonlinear diffusion in heterogeneous media.
In particular, the finite element method has been employed to model nonlinear diffusion of two components through a heterogeneous media, with the diffusivities and partition coefficients taking on different values in each compartment.