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- W2460078073 abstract "The successful suppression of clutter arising from stationary or slowly moving tissue is one of the key issues in medical ultrasound color blood imaging. Remaining clutter may cause bias in the mean blood frequency estimation and results in a potentially misleading description of blood-flow. In this paper, based on the principle of general wall-filter, the design process of three classes of filters, infinitely impulse response with projection initialization (Prj-IIR), polynomials regression (Pol-Reg), and eigen-based filters are previewed and analyzed. The performance of the filters was assessed by calculating the bias and variance of a mean blood velocity using a standard autocorrelation estimator. Simulation results show that the performance of Pol-Reg filter is similar to Prj-IIR filters. Both of them can offer accurate estimation of mean blood flow speed under steady clutter conditions, and the clutter rejection ability can be enhanced by increasing the ensemble size of Doppler vector. Eigen-based filters can effectively remove the non-stationary clutter component, and further improve the estimation accuracy for low speed blood flow signals. There is also no significant increase in computation complexity for eigen-based filters when the ensemble size is less than 10." @default.
- W2460078073 created "2016-07-22" @default.
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- W2460078073 date "2015-08-01" @default.
- W2460078073 modified "2023-10-16" @default.
- W2460078073 title "[Design Method Analysis and Performance Comparison of Wall Filter for Ultrasound Color Flow Imaging]." @default.
- W2460078073 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26710448" @default.
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