Medical Pulse-Echo Ultrasound Imaging Based on the Cross-Correlation of Transmitted and Backpropagated-Receive Wavefields

摘要

In seismic imaging, a shot gather collects time series data from all receivers (geophones) with a common transmitter (source or shot). Shot-gather migration is an imaging technique that performs time-domain cross-correlation of the transmitted wavefield with the back-propagated receive wavefield. Shot-gather migration can be used to achieve the focusing quality of synthetic aperture imaging without susceptibility to motion by accurately modeling each wave-front, regardless of the transmit sequence applied. Since wave propagation is parameterized by the speed of sound in the medium, shot gather migration can also be used to perform distributed phase aberration correction enabling additional focusing improvements. In this work, we illustrate the shot gather migration process for point targets in simulation.