Synthesis method and device for digitalization ultrasonic beam with adjustable receiver aperture

Abstract

The invention discloses an adjustable receiving aperture digital ultrasonic beam synthesis method and a device, which relates to the medical ultrasonic field; the invention supports the synthesis of a single or a plurality of ultrasonic beam synthesis, can be combined with the different application occasions, and can change the maximum number of the receiving aperture and the position of the receiving aperture on a probe flexibly. When in observation of a static tissue structure, a transmitter scans the same physical position twice, and the number of the receiving aperture at the moment is twice the number of the physical channels, which can significantly improve the image quality. When in observation of a high-speed moving tissue or in Doppler imaging of the blood flow, the transmitter scans the same physical position once only, the center of the receiving aperture is near a emission line or coincided with the emission line, and the frame rate at the moment can be doubled. Compared with the prior art, the invention has the advantages that: the invention applies the single ultrasonic beam or multiple ultrasonic beams to support and receive the ultrasonic echo of the receiving aperture at an arbitrary position. The invention can also change the maximum number of the aperture and leads the center of the aperture to be near or coincided with the emission line; the results of ultrasonic beam synthesis can still be obtained without the synthesis of the aperture, and the frame rate under the same scanning depth can be doubled as the earlier applied patent.

Description

technical field [0001] The present invention relates to a method and a device for using ultrasound for medical measurement and observing human blood flow and Doppler imaging, in particular to a method and device for combining ultrasonic beams with adjustable receiving aperture Background technique [0002] In the existing ultrasonic imaging system, improving image quality, increasing imaging frame rate and reducing product cost are important goals pursued by designers. Reducing costs will make products more competitive. However, in low-cost products, image quality and frame rate often restrict each other. Therefore, when image quality and frame rate cannot be balanced, it is necessary to take flexible measures according to different applications to solve the main contradiction. [0003] The Chinese patent application CN 1788685A entitled "Receiving Method and Device Based on Dual Beam and Synthetic Aperture" submitted by the applicant on December 15, 2004 discloses a method...

AI Technical Summary

Problems solved by technology

However, the technology disclosed in the patent application CN 1788685A only supports dual-beam reception, and for each scan, the receiving aperture can only be on the left or right side of the scan line

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