Group sound velocity real-time adjustable ultrasound diagnostic equipment and wave beam synthesis method thereof

Abstract

The invention discloses a group sound velocity real-time adjustable ultrasound diagnostic equipment and a wave beam synthesis method thereof, which relates to the technical field of medicinal ultrasound diagnostic equipment. The equipment uses changeable group sound velocity to accurately calculate wave beam synthesis, and through the combination between the equipment and a pre-value storage device, a doctor can select examination positions to automatically load the most matched group sound velocity for imaging and to permit the real-time adjustment and imaging of the group sound velocity. Theinvention changes the traditional wave beam synthesis method so as to improve the imaging quality of the ultrasound diagnostic equipment, reduce imaging error caused by using fixed group sound velocity and increase the accuracy of measuring results simultaneously.

Description

technical field [0001] The invention relates to the field of medical ultrasonic diagnostic equipment, in particular to an ultrasonic diagnostic equipment with real-time adjustable tissue sound velocity and a beam forming method thereof. Background technique [0002] Ultrasonic echo imaging technology has been widely used in military, medical and other fields. By transmitting ultrasonic waves to the target area, the receiving device receives the reflected echo signals, and suppresses the echo signals through signal processing technology and image processing technology. The useless parts in the final form the image of the target area. [0003] In the medical field, which is closely related to each of us's daily life, ultrasonic echo imaging technology has achieved considerable development. At present, various medical ultrasonic diagnostic equipment such as B-ultrasound have been widely used in clinical diagnosis in various hospitals. In addition to the traditional The black-a...

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Problems solved by technology

[0004] However, in the current medical ultrasonic diagnostic equipment, the propagation speed of ultrasonic waves in human tissue (hereinafter referred to as tissue sound velocity) is assumed to be a constant: 1540 m / s, which greatly simplifies the software of ultrasonic diagnostic equipment on the one hand. Hardware design, because the propagation of ultrasound in human tissue is a very complicated process, involving the absorption, reflection, refraction, diffraction and other phenomena of sound waves. The velocity of sound in tissue becomes very difficult, and simplified assumptions must be made in order to realize the available ultrasonic diagnostic equipment in the current hardware and software; but on the other hand, this also causes the decline in the quality of ultrasonic imaging, and the measurement of distance, The error of the area is relatively large, because the distance measurement of the ultrasonic image is based on the formula of "distance = speed × time". If the speed is not accurate, the measured distance is correspondingly inaccurate, and even Don't mention the area

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