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Representative image of renal microvasculature visualized using STC and top-hat based noise bias filter. (a) power Doppler image without background suppression. (b) STC filtered power Doppler image, and its corresponding estimated noise field (c). (d) top-hat filtered power Doppler image, and its corresponding estimated noise field (e). (f-h) STC filtered power Doppler image in (b) displayed with dynamic ranges [0 10], [0 20] and [0 30], respectively.
