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17 February 2011 Ablative efficiency of lithium triborate laser vaporization and conventional transurethral resection of the prostate: a comparison using transrectal three-dimensional ultrasound volumetry
Oliver Gross, Tullio Sulser, Lukas J. Hefermehl, Daniel D. Strebel, Remo Largo, Ashkan Mortezavi, Cédric Poyet, Daniel Eberli, Matthias Zimmermann, Alexander Müller, Maurice S. Michel, Michael Müntener, Hans-Helge Seifert, Thomas Hermanns
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Proceedings Volume 7883, Photonic Therapeutics and Diagnostics VII; 78831I (2011) https://doi.org/10.1117/12.874024
Event: SPIE BiOS, 2011, San Francisco, California, United States
Abstract
Introduction and objectives: It is unknown if tissue ablation following 120W lithium triborate (LBO) laser vaporization (LV) of the prostate is comparable to that following transurethral resection of the prostate (TURP). Therefore, transrectal 3D-ultrasound volumetry of the prostate was performed to compare the efficiency of tissue ablation between LBO-LV and TURP. Methods: Between 03/2008 and 03/2010 110 patients underwent routine LBO-LV (n=61) or TURP (n=49). Transrectal 3D-ultrasound with planimetric volumetry of the prostate was performed pre-operatively, after catheter removal, 6 weeks and 6 months. Results: Median prostate volume was 52.5ml in the LV group and 46.9ml in the TURP group. After catheter removal, median absolute volume reduction (LV: 7.05ml, TURP: 15.8ml) and relative volume reduction (15.9% vs. 34.2%) were significantly lower in the LV group (p<0.001). After 6 weeks/ 6 months, the relative volume reduction but not the absolute remained significantly lower in the LV group. Conclusions: LBO-LV is an efficient procedure evidenced by an absolute tissue ablation not significantly different to that after TURP. However, TURP seems to be superior due to a higher relative tissue ablation. The differences in tissue ablation had no impact on the early clinical outcome. Delayed volume reduction indicates that prostatic swelling occurs early after LV and then decreases subsequently.
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Oliver Gross, Tullio Sulser, Lukas J. Hefermehl, Daniel D. Strebel, Remo Largo, Ashkan Mortezavi, Cédric Poyet, Daniel Eberli, Matthias Zimmermann, Alexander Müller, Maurice S. Michel, Michael Müntener, Hans-Helge Seifert, and Thomas Hermanns "Ablative efficiency of lithium triborate laser vaporization and conventional transurethral resection of the prostate: a comparison using transrectal three-dimensional ultrasound volumetry", Proc. SPIE 7883, Photonic Therapeutics and Diagnostics VII, 78831I (17 February 2011); https://doi.org/10.1117/12.874024
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KEYWORDS
Prostate
Tissues
Surgery
Laser ablation
Ultrasonography
Laser tissue interaction
Lithium
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