Possible Patient Early Diagnosis by Ultrasonic Noninvasive Estimation of Thermal Gradients into Tissues Based on Spectral Changes Modeling
Figure 1
(a) Simple simulated multiecho signal based on the mathematical model of regularly spaced scatters, for the case of clearly separated echoes. (b) Acquired echosignal from an experimental phantom with 4 layers of glass microspheres. An ultrasonic transducer with frequency MHz was used.