A pulsatile flow phantom for studying ultrasound image‐guided acoustic hemostasis in a controlled environment has been developed. An ex vivo porcine carotid artery was attached to the phantom and embedded in a visually and ultrasonically transparent gel. Heparinized porcine blood was pumped through the phantom. Power‐Doppler and B‐mode ultrasound were used to remotely target the HIFU focus to the site of a needle puncture. In nine trials, complete hemostasis was achieved after an average HIFU application of 55 +/− 34 seconds. The vessels remained patent after treatment. With this phantom, it will be possible to do controlled studies of ultrasound image‐guided acoustic hemostasis.

Topics
Ultrasound, Fluid flows, Medical ultrasonography, Cardiovascular system, Patents
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© 2005 American Institute of Physics.
2005
American Institute of Physics
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