Free radical production by high energy shock waves--comparison with ionizing irradiation. Academic Article uri icon

Overview

abstract

  • Fricke chemical dosimetry is used as an indirect measure of the free radical production of ionizing irradiation. We adapted the Fricke ferrous sulfate radiation dosimeter to examine the chemical effects of high energy shock waves. Significant free radical production was documented. The reaction was dose dependent, predictably increased by acoustic impedance, but curvilinear. A thousand shocks at 18 kilovolts induced the same free radical oxidation as 1100 rad cobalt-60 gamma ionizing irradiation, increasing to 2900 rad in the presence of an air-fluid zone of acoustic impedance. The biological effect of these free radicals was compared to that of cobalt-60 ionizing irradiation by measuring the affect on Chinese hamster cells by clonogenic assay. While cobalt-60 irradiation produced a marked decrease in clonogenic survivors, little effect was noted with high energy shock waves. This suggested that the chemical effects produced by shock waves were either absent or attenuated in the cells, or were inherently less toxic than those of ionizing irradiation.

publication date

  • January 1, 1988

Research

keywords

  • Lithotripsy
  • Oxidation-Reduction

Identity

Scopus Document Identifier

  • 0023878255

Digital Object Identifier (DOI)

  • 10.1016/s0022-5347(17)42350-0

PubMed ID

  • 3275798

Additional Document Info

volume

  • 139

issue

  • 1