Effect of laser radiation on tissue during laser angioplasty

A. J. Welch, J. W. Valvano, J. A. Pearce, L. J. Hayes, M. Motamedi

Research output: Contribution to journalArticlepeer-review

65 Scopus citations


The thermal properties of adipose and ceramic atherosclerotic plaque deposits and normal arterial vessel wall were measured in the temperature range of 25−95°C. In general, the data indicate that fatty plaques exhibit the lowest thermal conductivity and thermal diffusivity of the three types, whereas calcified plaques seem to have the highest values. By using a video scanning thermograph, temperature rise was recorded in normal vessel wall and plaque during ablation of tissue. Theoretical analysis suggested that realistic modeling of laser angioplasty should account for scattering of light, water content, and ablation. This paper is a preliminary report of these results.

Original languageEnglish (US)
Pages (from-to)251-264
Number of pages14
JournalLasers in Surgery and Medicine
Issue number3
StatePublished - 1985
Externally publishedYes


  • ablation
  • heat source
  • laser angioplasty
  • optical properties
  • thermodynamic properties

ASJC Scopus subject areas

  • Surgery
  • Dermatology


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