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
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[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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