Review Article

Duplex Ultrasound Evaluation of Hemodialysis Access: A Detailed Protocol

Figure 9

This ultrasound demonstrates a pseudoaneurysm (PSA), denoted by the white arrow, arising from the posterior wall of an access graft, presumably as a consequence of through-and-through puncture. Color Doppler shows the classic swirling “yin-yang” pattern of blood flow typically seen in PSAs.
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