In vitro interstitial laser (805 nm) photocoagulation (ILP): comparison of fiber tips

Xiaomei Shi; Abraham H. Dachman

doi:10.1117/12.209920

22 May 1995 In vitro interstitial laser (805 nm) photocoagulation (ILP): comparison of fiber tips

Xiaomei Shi, Abraham H. Dachman

Proceedings Volume 2391, Laser-Tissue Interaction VI; (1995) https://doi.org/10.1117/12.209920
Event: Photonics West '95, 1995, San Jose, CA, United States

Abstract

We sought to study the effect of fiber tip modification on the size and shape of lesions created by the interstitial application of a 805 nm diode laser. In order to clarify conflicting results of other authors, we performed a large number of burns in order to obtain definitive statistically significant data. The plastic cladding and jacket were removed from the distal 5 mm of a hard polymer clad fused silica fiber of 600 micrometers . Three tip modifications were compared: a bare cut tip with and without precharring and a conical diffused tip. Continuous wave laser radiation was applied over a 1.0 to 2.5 watt range at 0.5 watt increments for a duration of 5, 10, and 15 minutes in vitro using fresh pig liver. The liver burns were thinly cut in cross-sections, and photographed. The sizes of the resultant cavity and lesion were measured and analyzed for statistical significance.

Citation Download Citation

Xiaomei Shi and Abraham H. Dachman "In vitro interstitial laser (805 nm) photocoagulation (ILP): comparison of fiber tips", Proc. SPIE 2391, Laser-Tissue Interaction VI, (22 May 1995); https://doi.org/10.1117/12.209920

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