Liver hemostasis using high-intensity focused ultrasound

Shahram Vaezy, Roy W. Martin, Udo Schmiedl, Michael Caps, Shari Taylor, Kirk Beach, Steve Carter, Peter Kaczkowski, George Keilman, Scott Helton, Wayne Chandler, Pierre Mourad, Matthew Rice, Ronald Roy, Lawrence Crum

Research output: Contribution to journalArticle

117 Scopus citations

Abstract

Liver hemorrhage, the major cause of death in hepatic trauma, is notoriously difficult to control. We report on the use of high-intensity focused ultrasound (HIFU) to arrest the bleeding from incisions made in rabbit livers. A HIFU transducer, with a spherically curved aperture of 6.34 cm2 area, a focal length of 4 cm and a frequency of 3.3 MHz was used. In approximately 94% of the incisions, the hemorrhage was reduced to a slow oozing of blood in less than 2 min. The maximum temperature of liver tissue around the incision area, during HIFU application was measured to be 86°C. The mechanism of hemostasis, confirmed by histological examination, appears to be coagulative necrosis of a volume of liver tissue around the incision. We believe that acoustic hemostasis, with the unique characteristic of 'volume cauterization,' offers a novel method for the management of liver hemorrhage and, thus, has major clinical implications.

Original languageEnglish (US)
Pages (from-to)1413-1420
Number of pages8
JournalUltrasound in Medicine and Biology
Volume23
Issue number9
DOIs
StatePublished - 1997

Keywords

  • Acoustic hemostasis
  • Coagulative necrosis
  • Hemorrhage
  • HIFU
  • Liver
  • Rabbit
  • Surgery
  • Temperature
  • Trauma
  • Ultrasound

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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