Patent ID: 11940531
Assignee: THE TRUSTEES OF PRINCETON UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC A  G | IPC A  G

Claim 14:
15. A method for ultrasound tomography, comprising:
(i) transmitting, by a plurality of sources, waves at one or more frequencies within a frequency bandwidth;
(ii) receiving, by one or more receivers, the waves transmitted by the plurality of sources;
iii) using, by a processor, a computerized representation of physical property maps of a medium that influence wave propagation;
(iv)modeling, by the processor, all the sources and the receivers involved in a dataset;
(v) associating, by the processor, to each of the sources a sinusoidal source time function with a defined frequency of a set of frequencies regularly spaced within a bandwidth of interest; and
(iv) performing, by the processor, a wave propagation simulation where sources are transmitting simultaneously for a time Tss+kΔτ, where Tss is a simulation duration for simulated wavefield to reach a steady state, k is an integer>=1, and Δτ=1/Δƒ
wherein the cost function comprises a source-encoded cost function that integrates contributions from all the sources, and
wherein the cost function comprises waveform differences, phase and amplitude measurements, double-difference phase and amplitude measurements, cross-correlation traveltime measurements, or a generic adjoint tomography cost function.