Hepatic fibrosis degree relative deviation identification method based on ultrasonic radio frequency (RF) time sequence
A technology of time series and relative deviation, applied in the field of ultrasonic medical research, can solve the problems of lack of quantitative analysis of liver fibrosis, poor consistency, and different sound wave propagation paths
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[0053] Such as figure 1 As shown, the method for identifying the relative deviation of liver fibrosis based on ultrasound RF time series in this embodiment is described in detail as follows.
[0054] S1. Construction of ultrasonic RF time series.
[0055]S1.1 Use Sonix TOUCH produced by Canada Ultrasonix Company and a broadband linear array ultrasound probe with a center frequency of 6.6MHz to scan the liver tissue area under the liver capsule, and record 128 frames of ultrasound echo radio frequency RF signals.
[0056] S1.2 Demodulate the first frame of data and display its ultrasonic B-mode image (such as figure 2 shown).
[0057] S1.3 Select a ROI with a size of 50×20 on the ultrasonic B-type image, intercept the ultrasonic echo RF signals of 1000 points in the ROI, and obtain 1000 ultrasonic RF signals by taking all the frame data of each point in the ROI time series, sequence diagrams such as image 3 shown.
[0058] S2. Feature parameter extraction.
[0059] S2.1...
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