Visual laser ablation of the prostate with a cylindrically diffusing fiber and an 805-nm diode laser

Douglas M. Cromeens D.V.M.; Douglas E. Johnson M.D.; L. Clifton Stephens

doi:10.1117/12.209084

12 May 1995 Visual laser ablation of the prostate with a cylindrically diffusing fiber and an 805-nm diode laser

Douglas M. Cromeens D.V.M., Douglas E. Johnson M.D., L. Clifton Stephens

Proceedings Volume 2395, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems V; (1995) https://doi.org/10.1117/12.209084
Event: Photonics West '95, 1995, San Jose, CA, United States

Abstract

We investigated the use of the 805 nm diode laser (Diomed 25 Diomedics, The Woodlands, Texas) in combination with a cylindrically diffusing fiber (Surgimedics, The Woodlands, Texas) to perform visual laser ablation of the prostate in 8 mongrel dogs. Each dog received 15,000 J of laser energy delivered to the prostate in one continuous dose of 25 W for 10 minutes. Gross and histopathologic examinations of serial sections of the prostate were performed at intervals from 3 hours to 7 weeks postoperatively. All dogs did well postoperatively with only one episode of urine retention 5 days after the surgery. Grossly, an ellipsoid zone of destruction with an average maximum diameter of 2.1 cm was present in all dogs. Histopathological changes in the prostate were similar to changes consistently reported for prostatectomies performed with similar dosimetry utilizing the 1.06 Nd:YAG laser. We believe this wavelength laser in combination with the diffusing fiber compared favorably with the Nd:YAG/sidefire fiber studies previously done in this laboratory with the added advantage of simplified operator technique, less postoperative complications and increased margin of safety.

Citation Download Citation

Douglas M. Cromeens D.V.M., Douglas E. Johnson M.D., and L. Clifton Stephens "Visual laser ablation of the prostate with a cylindrically diffusing fiber and an 805-nm diode laser", Proc. SPIE 2395, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems V, (12 May 1995); https://doi.org/10.1117/12.209084

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KEYWORDS

Prostate

Curium

Semiconductor lasers

Laser ablation

Nd:YAG lasers

Tissues

Fiber lasers

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