Synthetic aperture imaging method based on C-shaped probe

Abstract

The invention belongs to the technical field of high-resolution ultrasonic imaging, and discloses a synthetic aperture imaging method based on a C-shaped probe. The method comprises the following steps: (1) acquiring original data; (2) preprocessing data: for the original echo data, reserving ultrasonic signals received and acquired by L receiving array elements on the left side of a transmittingarray element and L receiving array elements on the right side of the transmitting array element at most; (3) performing filtering; and (4) reconstructing an image: performing gridding processing on an imaging area, performing one-by-one imaging point focusing on the filtered signals by imaging points based on the principle of a synthetic aperture focusing technology, performing calculating to obtain data values of all imaging points, and finally performing reconstructing to obtain a section image. The method preferably comprises a step (5) of reconstructing a three-dimensional image. The method can effectively solve the problem of ultrasonic image reconstruction of a C-type probe by improving the integral flow design of the ultrasonic imaging method of the C-type probe and particularly improving a key echo preprocessing step, compositions of functional modules of the corresponding imaging system, cooperative working mode of the functional modules and the like.

Description

technical field [0001] The invention belongs to the technical field of high-resolution ultrasonic imaging, and more specifically relates to a synthetic aperture imaging method based on a C-type probe, which can be directly applied to two-dimensional imaging to obtain two-dimensional ultrasonic images such as cut planes, and can also be applied to Three-dimensional imaging, for example, using multiple sliced ​​ultrasound images for further three-dimensional image reconstruction and the like. Background technique [0002] Ultrasonic detection has the advantages of good directivity, low price, harmless to the human body, and easy to carry equipment. Therefore, the detection technology using ultrasound as the emission source instead of ray to irradiate the object has gradually become a new pursuit pursued by researchers in the field of ultrasound applications. one of the goals. [0003] The main disadvantages of ultrasound imaging are the low resolution and poor contrast of ult...

AI Technical Summary

Problems solved by technology

The main reason is that several difficulties of this technology have not been overcome in China: In order to improve the image quality, the designed C-type probe has a large number of array elements, a large number of channels, and a large amount of data, and it is difficult to select a suitable reconstruction algorithm to achieve high-resolution images

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