Radial ultrasound image registration method and system

A radial ultrasound image registration method, comprising:

• setting a marker based on an endoscope device housing, the marker being within a scanning range of an ultrasound probe, and obtaining raw ultrasound data recording echo of the marker by radial scanning of the ultrasound probe;
• determining an amplitude lower limit according to a difference between an ultrasound echo amplitude range of the endoscope device housing and an ultrasound echo amplitude range of a marker echo area;
• establishing a registration condition based on the amplitude lower limit, traversing all data groups in the raw ultrasound data positioned in the marker echo area, and screening out a data group satisfying the registration condition as a first data group;
• identifying each group of image frame head and image frame tail in the raw ultrasound data based on positions of two adjacent first data groups, and judging data between each group of the image frame head and the image frame tail as data collected by the ultrasound probe during one full turn of radial scanning;
• and
• performing ultrasound image reconstruction on the data between each group of the image frame head and the image frame tail to obtain a frame of ultrasound radial-scan sectional image.