A Method of Ultrasonic Scattering Sub-diameter Imaging Based on Power Spectrum

An imaging method and scatterer technology, applied in the field of signal processing, can solve the problems of limited ultrasonic imaging diagnostic information and lost frequency, and achieve the effect of high precision and low computational complexity

Active Publication Date: 2021-07-30
SHENZHEN CERTAINN TECH CO LTD
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Problems solved by technology

The commonly used clinical "B-ultrasound" (B-mode ultrasound imaging) uses the amplitude information of the backscattered signal (radio frequency signal) for imaging, but loses information such as frequency, resulting in limited diagnostic information of ultrasound imaging

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  • A Method of Ultrasonic Scattering Sub-diameter Imaging Based on Power Spectrum
  • A Method of Ultrasonic Scattering Sub-diameter Imaging Based on Power Spectrum
  • A Method of Ultrasonic Scattering Sub-diameter Imaging Based on Power Spectrum

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Embodiment Construction

[0022] The ultrasonic scattering sub-diameter imaging method based on the power spectrum of the present invention is based on the ultrasonic backscattering signal (radio frequency signal) of the tissue to be measured, calculates the power spectrum, then calculates the ultrasonic scattering sub-diameter parameter and calculates the ultrasonic scattering sub-diameter parameter image method.

[0023] Without loss of generality, assuming that the ultrasonic radio frequency signal is composed of M scanning lines, and each scanning line contains N sampling points, the ultrasonic radio frequency signal is a two-dimensional matrix with a size of M×N. figure 1 Be the flowchart of the inventive method, mainly comprise the following steps:

[0024] (1) Slide the rectangular window on the ultrasonic RF signal, such as figure 2 As shown, the size of this sliding window is M w ×N w , which means M w scanning lines×N w sampling points. Let the sliding window be in the X and Z directio...

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Abstract

The invention discloses a power spectrum-based ultrasonic scattering particle diameter imaging method, which is based on ultrasonic radio frequency signals, calculates the power spectrum, and then calculates ultrasonic scattering particle diameter parameters and calculates ultrasonic scattering particle diameter parameter images. Slide the sliding window on the ultrasonic radio frequency signal, calculate the ultrasonic scattering sub-parameters in each sliding window based on the power spectrum, obtain the ultrasonic scattering sub-parameter value matrix, interpolate the ultrasonic scattering sub-parameter value matrix to the size of the ultrasonic radio frequency signal, and Color mapping is performed to obtain the ultrasonic scattering sub-diameter parameter image. The ultrasonic scattering sub-diameter imaging method of the present invention can be used for ultrasonic tissue characterization of breast, liver and other biological tissues.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and in particular relates to a medical ultrasonic signal processing method, more specifically, a method for calculating ultrasonic scattering sub-parameters and imaging using the power spectrum of ultrasonic backscattering signals (radio frequency signals). Background technique [0002] Ultrasound imaging is widely used in clinical diagnosis due to its real-time performance, low cost, and no ionizing radiation. The ultrasonic probe (transducer) emits ultrasonic waves into the tissue, and after a series of interactions between the ultrasonic waves and the tissue such as scattering, reflection, and diffraction, the ultrasonic probe receives the backscattered echoes of the tissue. The commonly used clinical "B-ultrasound" (B-mode ultrasound imaging) uses the amplitude information of the backscattered signal (radio frequency signal) for imaging, but loses information such as frequency, resu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B8/00
CPCA61B8/52
Inventor 周著黄欧阳亚丽吴水才高宏建丁琪瑛
Owner SHENZHEN CERTAINN TECH CO LTD
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