Abstract
One of the prerequisites for successful laser angioplasty is the ablation of the atherosclerotic lesions, without thermal or shock-wave damage of the healthy tissue. In this study was evaluated the effectiveness of a TEA CO2 laser, emitting pulses of the lower TEM mode, 100 ns duration, at a repetition rate of 2.4 Hz, for the ablation of cardiovascular tissue. Normal and atherosclerotic human arteries (post mortem) were irradiated for a range of fluences up to 10J pulse−1 cm−2. After irradiation, the samples were prepared for histologic examination. The results showed that controlled ablation of normal and atherosclerotic coronary artery can be accomplished with the TEA CO2 laser, with minimal thermal damage.
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