Fig. 3. Pulse wave mode image of common femoral vein. (A) Through an appropriate Doppler gain setting, background of the waveform should be black. (B) In case of overgain, noise is observed on the waveform background.

Ann Phlebology 2022;20:64~67 https://doi.org/10.37923/phle.2022.20.2.64

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