Ultrasound contrast imaging method and system

Abstract

The invention provides an ultrasound contrast imaging method and system for acquiring a human tissue ultrasonic image. The method comprises the following steps: generating an initial waveform; performing amplitude modulation factor processing and phase control factor processing on the initial waveform to obtain a first emission wave, a second emission wave and a third emission wave; selecting a scanning position, and at the scanning position, transmitting the first emission wave, the second emission wave and the third emission wave to the human body tissue; receiving and storing a first echo,a second echo and a third echo that are formed by reflection of the human body tissue; carrying out beam synthesis processing on the fist echo, the second echo and the third echo to obtain the first single-frame radio frequency data, the second single-frame radio-frequency data and the third single-frame radio-frequency data correspondingly; overlapping the first single-frame radio frequency data,the second single-frame radio-frequency data and the third single-frame radio-frequency data to generate single-frame contrast image data; and processing the single-frame contrast image data to obtain a final ultrasonic image.

Description

technical field [0001] The invention belongs to the field of signal and image processing, in particular to an ultrasound contrast imaging method and system. Background technique [0002] Ultrasound examination is a commonly used medical diagnostic technique nowadays. It is widely used in various medical examinations because of its cheap price, safety to the human body and good adaptability. [0003] The principle of ultrasonic imaging is to use the difference between the echo and the original sound wave to generate an image. The ultrasonic wave will change after being reflected by the object. The change is related to the shape characteristics of the object. Therefore, the shape of the object can be determined according to the reflected wave to form a specific object image. In clinical applications, when ultrasound is injected into the body, from the surface to the deep, it will pass through organs and tissues with different acoustic impedance and attenuation characteristics,...

AI Technical Summary

Problems solved by technology

[0005] 1. The emitted sound field is uneven, resulting in strong energy at the focal point of the sound wave and weak energy outside the focal area. At the same time, in order to ensure that the microbubbles outside the focal area form effective vibrations, the energy in the focal area needs to be increased, but it is easy to cause the energy outside the focal area The degree of microbubble rupture becomes larger, which affects the final imaging;

[0006] 2. Due to the use of multiple scans of a single frame image, microbubble rupture is exacerbated, resulting in a shorter duration of contrast-enhanced ultrasound imaging;

[0007] 3. The frame rate is slow, which is not conducive to monitoring fast perfusion tissues;

[0008] 4. In the imaging process, only the second harmonic component caused by the microbubble vibration is obtained, resulting in a decrease in contrast sensitivity and a shortened contrast duration.

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