MP35-08 HEAD-TO-HEAD ENERGY TRANSMISSION OF THE SUPER-PULSE THULIUM FIBER LASER VERSUS HOLMIUM LASER IN MULTIPLE FIBER SIZES AND SETTINGS

Abstract

You have accessJournal of UrologyCME1 Apr 2023MP35-08 HEAD-TO-HEAD ENERGY TRANSMISSION OF THE SUPER-PULSE THULIUM FIBER LASER VERSUS HOLMIUM LASER IN MULTIPLE FIBER SIZES AND SETTINGS Kalon Morgan, Nitesh Katta, Andrew S. Afyouni, Allen Rojhani, Sina S. Zarandi, Kelvin Vo, Rohit Bhatt, Andrei D. Cumpanas, Sohrab N. Ali, Pengbo Jiang, Gagik Akopyan, Roshan M. Patel, Thomas Milner, Jaime Landman, and Ralph V. Clayman Kalon MorganKalon Morgan More articles by this author , Nitesh KattaNitesh Katta More articles by this author , Andrew S. AfyouniAndrew S. Afyouni More articles by this author , Allen RojhaniAllen Rojhani More articles by this author , Sina S. ZarandiSina S. Zarandi More articles by this author , Kelvin VoKelvin Vo More articles by this author , Rohit BhattRohit Bhatt More articles by this author , Andrei D. CumpanasAndrei D. Cumpanas More articles by this author , Sohrab N. AliSohrab N. Ali More articles by this author , Pengbo JiangPengbo Jiang More articles by this author , Gagik AkopyanGagik Akopyan More articles by this author , Roshan M. PatelRoshan M. Patel More articles by this author , Thomas MilnerThomas Milner More articles by this author , Jaime LandmanJaime Landman More articles by this author , and Ralph V. ClaymanRalph V. Clayman More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000003269.08AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: To date, the standard for laser lithotripsy has been the Holmium (Ho:YAG) laser; recently a second laser for lithotripsy, the Super-Pulse Thulium fiber laser (sTFL), has become available. To better understand the capabilities of these two competing lasers relating to lithotripsy procedures, we compared the percent energy transmission (PET) of the sTFL and Ho:YAG lasers when aimed at an energy meter, using an array of fiber diameters, energy settings, and target distances. METHODS: We compared the PET and pressure produced by the sTFL and Ho:YAG lasers at three settings (popcorn (0.5 J and 40 Hz), dusting (0.3 J and 60 Hz) and fragmentation (1.0 J and 10 Hz)), four fiber sizes (272 µm, 365 µm, 550 µm, and 940 µm), and two distances (1 mm and 2 mm). PET was calculated by normalizing the energy reading when the fiber was fired with and without an interposed sapphire window in a water tank; pressure was recorded with a pressure sensing probe placed in the water tank (Figure 1). The average PET for each condition was compared using a 2-tailed, unpaired t-test. RESULTS: At the 1 mm distance, the sTFL had a greater PET than Ho:YAG for popcorn with 550 µm and 940 µm fiber sizes (p-values <0.01), for dusting with 365 µm, 550 µm, and 940 µm (p-values <0.01), and for fragmentation with 940 µm (p-values <0.01). At 1mm, the Ho:YAG had a greater PET than the sTFL for popcorn with 272 µm (p-value <0.01), and for fragmentation with 272 µm, 365 µm, and 940 µm (p-values <0.01). At 2 mm, the sTFL had a greater PET for every fiber size at all three energy settings. In all tests, the sTFL yielded lower pressure spikes (Table 1). CONCLUSIONS: At 1 mm, sTFL transmits more energy through the 940 µm fiber in all three settings: popcorn, dusting, and fragmentation, and Ho:YAG transmits more energy through the 272 µm fiber in the popcorn and fragmentation settings. At 2 mm, the sTFL has greater energy transmission in all conditions evaluated. The sTFL also resulted in lower pressure spikes than the Ho:YAG across all fiber sizes and laser settings. Source of Funding: None © 2023 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 209Issue Supplement 4April 2023Page: e471 Advertisement Copyright & Permissions© 2023 by American Urological Association Education and Research, Inc.MetricsAuthor Information Kalon Morgan More articles by this author Nitesh Katta More articles by this author Andrew S. Afyouni More articles by this author Allen Rojhani More articles by this author Sina S. Zarandi More articles by this author Kelvin Vo More articles by this author Rohit Bhatt More articles by this author Andrei D. Cumpanas More articles by this author Sohrab N. Ali More articles by this author Pengbo Jiang More articles by this author Gagik Akopyan More articles by this author Roshan M. Patel More articles by this author Thomas Milner More articles by this author Jaime Landman More articles by this author Ralph V. Clayman More articles by this author Expand All Advertisement PDF downloadLoading ...