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Urinary calculus fragmentation during Ho: YAG and Er:YAG lithotripsy by Ho Lee; Hyun Wook Kang; Joel M.H. Teichman; Junghwan Oh; Ashley J. Welch is a Medicine article available to read on EtoBox.

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## Abstract ## Background and Objectives We tested Ho:YAG and Er:YAG laser ablation of human urinary calculi to determine if Er:YAG is a more efficient lithotripsy device. ## Study Design/Materials and Methods Ablation efficiency of Ho:YAG and Er:YAG lasers was tested at varying energy settings, ranging from the damage threshold to clinical energy setting associated with Ho:YAG laser. Stones of known composition (calcium oxalate monohydrate (COM), cystine, and uric acid (UA)) were irradiated. Crater width, depth, and ablation volumes were determined using an optical coherence tomography (OCT). ## Results For all stones and energy settings, the Er:YAG laser produced deeper craters and larger ablation volumes than Ho:YAG laser. The Ho:YAG laser created wider craters during the multiple pulse process and the shape of craters was irregular. ## Conclusions The Er:YAG laser is more efficient than the Ho:YAG laser for lithotripsy. The deeper craters produced by the Er:YAG laser is attributed to the high absorption of energy at its wavelength. Lasers Surg. Med. © 2005 Wiley‐Liss, Inc.

Who reads Urinary calculus fragmentation during Ho: YAG and Er:YAG lithotripsy?

Author

Ho Lee; Hyun Wook Kang; Joel M.H. Teichman; Junghwan Oh; Ashley J. Welch

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0196-8092)

Published

2005

Language

EN

Field

Medicine (Health Sciences)