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Updated: Jul 22, 2025

Blood Flow Imaging with Ultrafast Doppler
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改进了超快的功率多普勒成像,使用联合空间角度自适应缩放维纳后波器.

Yadan Wang, Lijie Huang, Rui Wang

    IEEE transactions on ultrasonics, ferroelectrics, and frequency control
    |July 21, 2023
    PubMed
    概括

    这项研究引入了一种新的自适应光束变换器,即联合空间角自适应缩放维纳 (uSA-ASW) 后波器,以增强超快功率多普勒成像 (uPDI). 通过提高分辨率和对比度,同时抑制噪音,uSA-ASW显著改善了微血管可视化.

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    Upsampling01:22

    Upsampling

    Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...
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