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Ultrasonic beam forming method for improving frame frequency

An ultrasonic and frame rate technology, which is applied in the field of ultrasonic beamforming to improve the frame rate, can solve the problem that the beamformer cannot satisfy high imaging resolution and high frame rate at the same time, and achieves low computational complexity, high contrast, and high resolution. The effect of rate and contrast

Inactive Publication Date: 2018-08-03
NORTHEASTERN UNIV
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Problems solved by technology

[0004] The present invention aims at the shortcomings that the existing beamformer cannot simultaneously satisfy high imaging resolution and high frame frequency. beam forming method

Method used

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  • Ultrasonic beam forming method for improving frame frequency
  • Ultrasonic beam forming method for improving frame frequency
  • Ultrasonic beam forming method for improving frame frequency

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Embodiment Construction

[0050] The present invention will be further elaborated below in conjunction with the accompanying drawings of the description.

[0051] Such as figure 1 Shown, a kind of ultrasonic beam forming method that the present invention improves frame frequency, comprises the following steps:

[0052] 1) Set the parameters of the ultrasonic sensor and the focusing mode of transmission and reception, and use the Field II simulation to obtain the scanning results of different numbers of scanning lines for point targets and cyst imaging, including 128, 64, and 32 lines, each The results of each scan line and the corresponding delay are stored separately;

[0053] 2) The 128 scan line signals stored in step 1) are respectively processed by multiplication delay superposition algorithm and corresponding multi-line reception;

[0054] 3) performing envelope detection, logarithmic compression, scan conversion and image display on the data after the beamforming and multi-line receiving proce...

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Abstract

The invention relates to an ultrasonic beam forming method for improving frame frequency. The ultrasonic beam forming method comprises the steps that parameters and a transmitting-receiving focus modeare set of an ultrasonic sensor, Field II simulation is utilized to obtain results obtained by scanning opposite point targets and cyst images with different number of scan lines including 128, 64 and 32, and the result of each scan line and corresponding delay are respectively stored; three number types of stored scan line signals are processed by adopting multiplying delay superposition algorithm and corresponding multi-wire receiving respectively; envelope detection, logarithm compression and image display are conducted on data obtained after beam forming and multi-wire receiving processing; three storage results are processed by adopting a delay superposition algorithm, a minimum variance algorithm and corresponding multi-wire receiving and are respectively processed to obtain finaldisplay images. The images obtained by adopting the method has higher resolution ratio compared with the delay superposition algorithm and has lower operation complexity compared with the minimum variance algorithm.

Description

technical field [0001] The invention relates to the field of ultrasonic imaging, in particular to an ultrasonic beam forming method for increasing frame frequency. Background technique [0002] Ultrasound imaging is one of the four major imaging methods in modern medicine, and it is widely used because of its low cost and harmlessness to the human body. The quality of ultrasound imaging is mainly judged from three aspects: image resolution, detection depth and frame rate. However, in actual imaging, these three indicators are often in a state of ebb and flow. Beamforming is the most important part of the ultrasound imaging process, which directly affects the imaging quality. The beamforming method mainly used in the market at present is Delay and Sum (DAS) beamforming method, because of its low algorithm complexity, the whole imaging system has a higher frame rate. However, the wide main lobe and high side lobes of the time-delay stacking method reduce the image resolutio...

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Application Information

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IPC IPC(8): A61B8/00
CPCA61B8/5207
Inventor 张石王莹莹苏婷
Owner NORTHEASTERN UNIV
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