Synthetic-focusing imaging method of portable type-B ultrasonic equipment

A portable, ultrasonic technology, which is applied in ultrasonic/acoustic/infrasonic diagnosis, acoustic diagnosis, infrasonic diagnosis, etc. It can solve the problems of large data scale, high system complexity and difficult application, etc., and achieve the effect of reducing system complexity

Active Publication Date: 2013-02-13
SHANDONG UNIV
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Problems solved by technology

[0003] Aiming at the problems that the traditional SF beamforming algorithm described in the background technology has high system complexity, huge data scale to be processed, and is difficult to be applied to portable B-type ultrasound equipment, the present invention proposes a synthetic Focused Portable B-mode Ultrasound Imaging Method

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  • Synthetic-focusing imaging method of portable type-B ultrasonic equipment

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Embodiment

[0030] A portable B-mode ultrasound imaging method with synthetic focus. The radio frequency echo signal of the portable B-mode ultrasound equipment is randomly sampled in the analog / digital conversion process, and then beamforming, demodulation and detection are performed to form under-sampled scan lines. Finally, the signal reconstruction method of compressed sensing is used to recover the undersampled scan lines and visualize them; assuming that the portable B-mode ultrasound equipment has two focusing modes: fixed-point focus and dynamic focus, the exploration depth is D, and each scan line contains M pixel, the number of array elements of the transducer is N, and the numbering is successively 1, 2, ..., N; the array element index indicator of the gate is I, and its value is the array element numbering of the transducer; the steps of the present invention as follows:

[0031] S1) Preprocessing

[0032] Determine the focus mode of the portable B-mode ultrasound equipment, ...

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Abstract

A synthetic-focusing imaging method of portable type-B ultrasonic equipment belongs to the technical field of medical iconography. Radio frequency echo signals of portable type-B ultrasonic equipment are sampled at random during the treatment of analog-digital conversion, then beam formation and demodulation detection are carried out to obtain an undersampled scanning line, and finally, signal recovery and display are performed to the undersampled scanning line through a signal reconstruction method of compressed sensing. The method provided by the invention comprises the following steps: preprocessing, generating a pseudorandom pulse sequence and a measurement matrix, emitting ultrasonic waves by one array element of a transducer, receiving ultrasonic radio frequency echo signals by all array elements of the transducer, analog-digital converting of random sampling, beam forming, demodulating, logarithmic compressing, signal reconstructing of compressed sensing, frame caching and displaying. The invention solves the problems of high complexity, large data scale, difficulty in practical application of portable type-B ultrasonic equipment of a system of a traditional synthetic-focusing beam formation method, and realizes the synthetic-focusing imaging method of the portable type-B ultrasonic equipment.

Description

technical field [0001] The invention relates to an ultrasound-based medical imaging imaging method, in particular to a synthetic focusing portable B-mode ultrasound imaging method. Background technique [0002] Portable B-mode ultrasound equipment has the characteristics of small size, low cost, easy to carry, and can be powered by AC or internal battery. It is very suitable for use in rural or community hospitals, field hospitals, etc. The penetration rate and the market growth rate of the products continue to increase. However, how to further improve the imaging quality of the portable B-mode ultrasonic device on the premise of ensuring the above-mentioned good application performance is a problem that attracts considerable attention in the related engineering technology field. In the B-mode ultrasound imaging system, the beam forming link plays a decisive role in the imaging quality. The imaging mode of the traditional time-delay superposition algorithm limits the impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/00
Inventor 孙丰荣杜衍震李凯一金鑫
Owner SHANDONG UNIV
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