Abstract
According to the increasing number of reports on clinical (2, 4, 6, 8, 10, 13, 16) and experimental (1, 7, 15) observations of the effect of Nd-YAG laser irradiation on intracranial tumors and vascular lesions, the Nd-YAG laser provides a useful tool for shrinking brain tumors and coagulating vessels. However, there is a lack of information about the optical properties of normal brain tissue and brain tumors at a wavelength of 1060 nm, which influence the effects of laser irradiation. These optical properties are the reflection, extinction, and transmission capabilities. Extinction consists of absorption and scattering. The biological effect of surgical laser irradiation is determined by the amount of energy absorbed by the tissue. Up to now, optical properties of human brain tissue in comparison to brain tumors have not been made the subject of experimental studies. With regard to the methodological difficulties, the present study attempts to evaluate the relative levels of absorbance and transmittance of normal human brain tissue in comparison with brain tumors based on experiments performed in vitro.
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© 1985 Springer-Verlag Berlin Heidelberg
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Eggert, H.R. (1985). Optical Properties of Brain Tissue and Brain Tumors at the Wavelength of the Nd-YAG Laser (λ =1060 nm). In: Dietz, H., Brock, M., Klinger, M. (eds) Extra-Intracranial Vascular Anastomoses Microsurgery at the Edge of the Tentorium. Advances in Neurosurgery, vol 13. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-70603-5_42
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DOI: https://doi.org/10.1007/978-3-642-70603-5_42
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