In Vitro Ablation of Normal and Diseased Vascular Tissue by a Fiber-Transmitted Holmium Laser

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Abstract
An in vitro study was performed to test the ablative potential of a fiber-transmitted pulsed holmium laser (2.1 µm) applied to normal vascular wall, lipomatous plaques, and calcified plaques. Different fluences per pulse of 42, 80, 205, and 315 J/cm2 were used. Ablation of normal tissue and lipomatous plaques was achieved with all power settings. Effective ablation of calcified plaques, however, occurred only after a minimum fluence of 205 J/cm2, and the effect was significantly less pronounced compared to ablation of soft lesions.

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