Position information based ultrasonic wide view imaging method

Abstract

The invention discloses a position information based ultrasonic wide view imaging method. The method includes the following steps that (1) when acquiring images, an ultrasonic probe moves along a straight line or an approximate straight line, a system acquires an ultrasonic two-dimensional image sequence in the scanning process, and position information of the images is obtained through a positioning device; (2) time is set for the system, each frame image acquired is corresponding to the position information thereof; (3) spatial calibration is performed to enable each frame image to be transformed into a coordinate system of the positioning device, position and direction information acquired by the positioning device in the moving process of the ultrasonic probe is recorded in a world coordinate system, and coordinates of each frame image in the world coordinate system are obtained by final transformation for the convenience of display; (4) each frame image is mapped onto a preset two-dimensional plane according to the spatial position information thereof in the world coordinate system to form a wide view image. By the method, calculated amount of wide view imaging can be reduced, and real-time performance can be improved.

Description

technical field [0001] The invention relates to a medical ultrasonic wide-view imaging method, in particular to an ultrasonic wide-view imaging method based on position information, and belongs to the technical field of medical ultrasonic wide-view imaging. Background technique [0002] Medical ultrasound imaging is one of the important diagnostic methods in modern clinical medicine. Due to the limited divergence angle of the ultrasound beam emitted by the traditional ultrasound probe and the size of the probe, it can only generate ultrasound images with a narrow field of view and cannot reflect The overall image of the detected area affects the accuracy and speed of medical diagnosis to a certain extent. [0003] In response to this problem, in 1996, Weng et al. proposed Extended field-of-view ultrasound, which collects a series of ultrasound images and uses image registration technology to stitch them together in real time to form an image with a larger observation field o...

AI Technical Summary

Problems solved by technology

Wide-field imaging technology mainly includes three parts: image acquisition, image registration, and image mosaic; among them, image registration is the core of wide-field imaging. In order to accurately obtain the relative displacement and deflection between two adjacent images, image registration It is necessary to measure and search the pixel value with the help of a relatively complex algorithm. The amount of calculation is very large, and it is difficult to achieve real-time in actual use. In the case of relatively high real-time requirements, traditional EFOV technology cannot meet the real-time requirements

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