Multi-aperture focus ultrasonic imaging technique based on virtual source

In this paper, a multi-aperture synthetic focusing technique based on virtual source is studied, which improves the lateral resolution and depth of the ultrasonic imaging with respect to the single array dynamic synthetic aperture focusing technique (SAFT). It only needs to store the N numbers data for the A scan line, and the complexity of the algorithm is greatly reduced compared with the full focus technology (TFM) with the maintenance of image quality. Using Field II simulation and Multi2000 device experiment results show that compared with the single element dynamic synthetic aperture technology, virtual source multi-aperture synthetic focusing ultrasonic technique (VS-MSAFT) effectively improves the lateral resolution and depth of permeation, furthermore to improve the quality of ultrasound imaging.