Acta Neurochirurgica

, Volume 104, Issue 1–2, pp 27–29 | Cite as

Prediction of the interaction effects Ar+ laser-brain tumours by study of the photoacoustic spectroscopy of cerebral oncotypes

  • A. De Tommasi
  • M. Occhiogrosso
  • G. Vailati
  • L. Baldassarre
  • A. Cingolani
Clinical Research
  • 16 Downloads

Summary

A preliminary definition of light absorption spectra of brain neoplasm represents a correct approach to the laser therapy of cerebral tumours. The goal should be the identification of those oncotypes more sensive to the laser energy, allowing consequentely a dosage of the energy proportional to the light absorption coefficient, reducing any side effects.

With this purpose the coefficients of light — absorption of 63 different brain tumours have been analyzed and defined by means of photocoustic spectrometry. The study has been focused at wave-length of the Ar+ laser (4,600–6,000 å).

The results show a close relationship between histology, degree of vascularization and/or pigmentation and light absorption: the more immature and/or pigmented oncotypes show the higest coefficients of optical absorption. In the laser therapy of these neoplasms it will be sufficient to use low powers and short exposure time.

Keywords

Laser surgery Ar+ laser photo-acoustic spectrometry cerebral tumour 

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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • A. De Tommasi
    • 1
  • M. Occhiogrosso
    • 1
  • G. Vailati
    • 1
  • L. Baldassarre
    • 2
  • A. Cingolani
    • 2
  1. 1.Chair of NeurosurgeryUniversity of BariItaly
  2. 2.Department of Physics, GNEQP-CNR UnitUniversity of BariItaly

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