Damage to red blood cells induced by acoustic cavitation

S. Daniels, T. Kodama, D. J. Price

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

This experimental study has revealed damage to red blood cells that is quantitatively related to the acoustic pressure during irradiation with 0.75-MHz continuous-wave ultrasound, using a range of intensities comparable to those employed by ultrasonic physiotherapy equipment (0.25 to 7 W cm-2 spatial average temporal average). Damage to the red blood cells was investigated by measuring the extent of haemolysis using a UV/VIS spectrophotometer. There was a clear correlation between the amount of haemoglobin released and the intensity of harmonic emissions recorded from the sample during irradiation. The observed degree of haemolysis could not be produced by temperature rises in the absence of the sound field. This suggests that the damage was a direct result of acoustic cavitation.

Original languageEnglish
Pages (from-to)105-111
Number of pages7
JournalUltrasound in Medicine and Biology
Volume21
Issue number1
DOIs
Publication statusPublished - 1995
Externally publishedYes

Keywords

  • Absorption spectroscopy
  • Bubbles
  • Cavitation
  • Haemoglobin
  • Haemolysis
  • Red blood cells
  • Ultrasound

ASJC Scopus subject areas

  • Biophysics
  • Radiological and Ultrasound Technology
  • Acoustics and Ultrasonics

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