Time-domain analysis of power law attenuation in space-fractional wave equations
Time-domain analysis of power law attenuation in space-fractional wave equations
Ultrasound attenuation in soft tissue follows a power law as a function of the ultrasound frequency, and in medical ultrasound, power law attenuation is often described by fractional calculus models that contain one or more time- or space-fractional derivatives. For certain time-fractional models, exact and approximate time-domain Green's functions are …