ULTRASONIC IMAGING METHOD AND SYSTEM FOR DETECTING MULTI-LAYERED OBJECT WITH SYNTHETIC APERTURE FOCUSING TECHNIQUE

摘要

The present disclosure provides an ultrasonic imaging method and system for detecting a multi-layered object with synthetic aperture focusing technique. Based on SAFT technique, equating DAS and all-range dynamic focusing with drawing the arcs on the image using the arc scan conversion technique, a quick and accurate ultrasonic imaging method for a single-medium object is achieved. On this basis, a refraction vector calculation formula is used in combination with a refraction law to calculate a refraction path in a forward pattern, and the pixel points on the refraction path are scan-converted using the Bresenham line scan conversion algorithm.