Ultrasonic imaging method and ultrasonic imaging device

Abstract

The invention discloses a method and a device for performing ultrasonic imaging on a target area. The ultrasonic imaging method includes sending a first ultrasonic pulse and receiving a first ultrasonic echo signal, sending a second ultrasonic pulse and receiving a second ultrasonic echo signal, sending a third ultrasonic pulse and receiving a third ultrasonic echo signal, extracting an echo signal component according to the first ultrasonic echo signal, the second ultrasonic echo signal and the third ultrasonic echo signal, and generating an ultrasonic image of the target area according to the echo signal component, wherein the amplitude weight of the third ultrasonic pulse is equal to the sum of the amplitude weight of the first ultrasonic pulse and the amplitude weight of the second ultrasonic pulse. The plurality of ultrasonic echo signals are processed and modulated, asymmetric components of even order nonlinear components and odd order nonlinear components in the ultrasonic echo signals are enabled to be separated from symmetric components of linear components and the odd order nonlinear components, and the asymmetric components and / or the even order nonlinear components of the odd order nonlinear components can be conveniently extracted from the ultrasonic echo signals.

Description

technical field [0001] The invention relates to the field of medical ultrasonic imaging, in particular to a method and device for ultrasonic imaging of a target area. Background technique [0002] In the medical ultrasound imaging system, the transmitting circuit usually transmits ultrasonic pulses into the human body, and the visible ultrasonic images of human tissues are obtained by receiving and processing the echoes carrying the characteristic information of human tissues by using the reflection of ultrasonic waves at the interface of human tissues. [0003] In ultrasound imaging, due to the existence of reverberation and the limitation of resolution, ultrasound images sometimes appear blurred or even unable to display weak boundaries and small blood vessels. In contrast agent imaging, the acoustic impedance difference between the contrast agent and the surrounding tissue is large, which can change the absorption, reflection, scattering and refraction of sound waves betw...

AI Technical Summary

Problems solved by technology

In the ultrasonic echo reflected by human tissue containing contrast agent, the linear component includes both the linear component of the tissue and the linear component of the contrast agent. The contrast resolution of the ultrasonic image formed by the detection and processing of the linear component of the fundamental wave is not high, and the contrast cannot be clearly presented. The perfusion of agents in microvessels and tissues affects clinical differential diagnosis

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