Method and system for detecting sensitivity of small blood flow signals based on ultrasonic imaging

Abstract

The invention provides a method and system for detecting sensitivity of small blood flow signals based on ultrasonic imaging. The method comprises the steps that a blood flow speed image is obtained; a blood flow area of the blood flow speed image is obtained according to the blood flow speed image; a blood flow energy image is obtained; a blood flow area of the blood flow energy image is obtained according to the blood flow energy image; the blood flow area of the blood flow speed image and the blood flow area of the blood flow energy image are fused to form a new blood flow area image. Compared with the prior art, the method and system for detecting the sensitivity of the small blood flow signals based on ultrasonic imaging are a post-processing method for spatial features of the blood flow energy image and the blood flow speed image based on an ultrasonic Doppler, the blood flow signals and tissue signals can be distinguished effectively, and therefore the reflection echo is weak, the small blood flow signals with low energy are reserved, the sensitivity of color blood flow of an ultrasonic system is improved, and the sensitivity for detecting the small blood flow signals is further improved.

Description

technical field [0001] The invention relates to a method and system for detecting the sensitivity of small blood flow signals based on ultrasonic imaging, which are mainly used in the technical field of ultrasonic color Doppler imaging. Background technique [0002] Ultrasonic examination is to observe the reflection of ultrasonic waves by the human body; emit a group of ultrasonic waves to the human body through the ultrasonic probe, and scan in a certain direction; according to the delay time and strength of the echoes, the distance and nature of the organs can be judged. After processing by electronic circuits and computers, the B-ultrasound image of this part is formed; the price of ultrasound examination is lower than that of CT and MRI, and it has the characteristics of non-invasive and real-time acquisition of human internal tissue images, which has become the main auxiliary means of doctor diagnosis. It has a very wide range of clinical applications. [0003] Color ...

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Problems solved by technology

[0006] Correspondingly, the judgment of blood flow and tissue in the ultrasound imaging system is mainly realized by setting the echo amplitude threshold; the basic idea is to set two thresholds of noise and tissue, when the Doppler energy is greater than the noise threshold and less than When the tissue threshold is reached, and the velocity meets certain conditions, it is judged as a blood flow echo; this is a simple and rough distinction method. It is not very reasonable to adopt a "one size fits all" type of discrimination for all parts, which is prone to erroneous results.

[0007] Therefore, it is still very challenging to realize an efficient and significant method and system for detecting small blood flow signal sensitivity based on ultrasound imaging.

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