Abstract
Effect of combined coaxial irradiation by high peaked pulse wave form CO2 and Nd-YAG laser on microvasculature was examined in experimental animals. Soft X-ray microangiography and histopathology of brain after combined coaxial irradiation revealed the same effect on microvasculature as after Nd-YAG laser exposure. Broad avascular or oligovascular area in the irradiated and the surrounding edematous tissure was found at the exposure site. In the edematous layer the vessels were shown to be narrowed and tapered. In the tissue around the edematous layer some vessels were dilated and congested, which are not so significantly affected as in CO2 laser exposure alone.
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