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

Claim 0:
1. A system for ultrasound tomography, comprising:
a plurality of sources configured to transmit waves at one or more frequencies within a frequency bandwidth;
one or more receivers configured to receive the waves transmitted by the plurality of sources; and
a processor configured to:
(a) use a computerized representation of physical property maps of a medium that influence wave propagation;
(b) model all the sources and the receivers involved in a dataset;
(c) associate 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
(d) perform 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 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.