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Ultrahigh-resolution ultrasonic imaging method based on complex cumulant analysis

An ultrasonic imaging method and cumulant technology, applied in the analysis of materials, the use of sound waves/ultrasonic waves/infrasonic waves to analyze solids, and the use of sound waves/ultrasonic waves/infrasonic waves for material analysis, etc., can solve the axial oscillation of real number domain signals and affect the performance of ultrasonic imaging , Ultrasonic imaging resolution impact and other issues, to achieve the effect of solving axial oscillation, improving spatial resolution, and high contrast

Pending Publication Date: 2022-02-18
FUDAN UNIV
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Problems solved by technology

[0004] However, in SOFI-based ultra-high-resolution ultrasound imaging, the bipolar impulse response of the ultrasound signal will cause the axial oscillation of the real-number domain signal, which will affect the performance of ultrasound imaging based on the SOFI method, and the resolution of the final ultrasound imaging will also be affected. influences

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  • Ultrahigh-resolution ultrasonic imaging method based on complex cumulant analysis
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  • Ultrahigh-resolution ultrasonic imaging method based on complex cumulant analysis

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[0027] In order to make the technical means, creative features, goals and effects of the present invention easy to understand, a super-high-resolution ultrasonic imaging method based on complex cumulant analysis of the present invention will be described in detail below in conjunction with the embodiments and accompanying drawings.

[0028]

[0029] figure 1 It is a flow chart of the ultra-high resolution ultrasonic imaging method based on complex cumulant analysis in the embodiment of the present invention.

[0030] Such as figure 1 As shown, the super-resolution ultrasound imaging method based on complex cumulant analysis includes the following steps:

[0031] In step S1, a set of plane wave ultrasonic image sequences is acquired, and each frame of the plane wave ultrasonic image sequence contains a plurality of randomly distributed point scatterers.

[0032] figure 2 It is a schematic diagram of a plane wave ultrasonic image generated based on the Field II simulation ...

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Abstract

The invention provides an ultrahigh-resolution ultrasonic imaging method based on complex cumulant analysis, which is characterized by comprising the following steps of: firstly, carrying out Hilbert transform on a real number field signal of an obtained original ultrasonic plane wave image to obtain a complex number field ultrasonic signal; then, constructing a complex field cumulant analysis framework to carry out high-order cumulant analysis processing on complex field ultrasonic signals, so that a statistical framework of ultrasonic image data is expanded, the problem of axial oscillation of real number field signals caused by bipolar pulse response of the ultrasonic signals is solved; and finally carrying out deconvolution processing on a complex cumulant result obtained by complex cumulant analysis processing to further improve the spatial resolution of ultrahigh-resolution ultrasonic imaging.

Description

technical field [0001] The invention belongs to an ultrahigh-resolution ultrasonic imaging method, in particular to an ultrahigh-resolution ultrasonic imaging method based on complex cumulant analysis. Background technique [0002] Ultrasound imaging has been widely used in biomedical research. However, the spatial resolution of ultrasound imaging is limited by the wavelength of the acoustic wave, which has a limited spatial resolution (approximately half of the emitted wavelength). Although shorter wavelengths can be used to improve spatial resolution, this also reduces the penetration depth of ultrasound, which limits the further application of ultrasound. [0003] Among the existing ultrasonic imaging technologies, SOFI (Super-resolution Optical Fluctuation Imaging) is a new super-resolution imaging method. At present, it has been successfully applied in ultra-high resolution ultrasound imaging. Briefly speaking, the basic principle of SOFI is: based on the recorded ti...

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Application Information

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IPC IPC(8): G01N29/06G01N29/44
CPCG01N29/0654G01N29/449G01N2291/106
Inventor 他得安庞博刘欣刘成成李博艺
Owner FUDAN UNIV
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