Beamforming method, ultrasonic imaging method and device and equipment

Abstract

The invention provides a beamforming method, an ultrasonic imaging method and device and equipment. The method comprises the following steps that a focus depth value Z corresponding to each wave beamis calibrated through specified steps, and the calibrated focus depth values Z2 replace original focus depth values Z of the corresponding wave beams; signal alignment is performed on a wave beam setaccording to the calibrated focus depth values Z2, a BF1 signal set in the wave beam set after the signal alignment is obtained, and then specific superposition is performed on all BF1 signals in theBF1 signal set to obtain a BF2 signal. By achieving the signal alignment of multiple wave beams, sidelobe can be better inhibited, and the image resolution and signal to noise ratio are improved; through multi-beam superposition, the line density is greatly improved, and the spatial resolution of images is improved; by adding an calibration module and a synthesis module in a beamforming module, the data is more accurate after beamforming; through sound filed judgement, effective sound filed data is superimposed, compared with a conventional method, a better focusing effect is achieved, and theimage quality is improved.

Description

Technical field [0001] This application relates to the field of computer technology, and in particular to a beam synthesis method, ultrasound imaging method, device and equipment. Background technique [0002] Ultrasound imaging is widely used in clinical medical diagnosis because of its advantages of safety, real-time, portability, non-invasiveness and low cost. Beam synthesis is at the core of the ultrasound imaging system and plays a decisive role in imaging quality. In beam synthesis, the width of the main lobe and the amplitude of the side lobe are used to judge the quality of the formed beam. Generally, the narrower the width of the main lobe, the higher the lateral resolution of the imaging; the smaller the amplitude of the side lobe, the higher the imaging contrast Larger, and less artifact noise. [0003] In addition, beamforming reception is divided into single-beam and multi-beam reception. In the real-time diagnosis of moving organs, multi-beam reception can greatly i...

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Problems solved by technology

[0003] In addition, beamforming reception is divided into single beam reception and multi-beam reception. In the real-time diagnosis of moving organs, multi-beam reception can greatly improve the frame rate. However, the phases of the multiple beams received by each transmission are not aligned. RF signals also have high artifact noise

[0004] The traditional method superimposes beams with time delay, resulting in poor image quality, high level of side lobes, and low spatial resolution. Although three methods of dynamic focusing, amplitude apodization, and dynamic aperture can be used to control beam main lobe width and side lobe amplitude, Thereby suppressing the side lobe to improve the quality of ultrasound imaging, but at the same time suppressing the main lobe, which has an impact on image resolution; other existing methods also improve focus by reducing the side lobe amplitude, improving resolution, and increasing the signal-to-noise ratio. effect, but the method of increasing the frame rate and improving the spatial resolution is still a blind spot in the existing technology

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