Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Ali H"'
Autor:
Julie J Dau, Timothy L. Hall, Sami E Majdalany, John M. Hollingsworth, Khurshid R. Ghani, Sapan N. Ambani, Casey A. Dauw, Ali H Aldoukhi, William W. Roberts
Publikováno v:
J Endourol
Introduction: Characterizing patterns of laser activation is important for assessing thermal dose during laser lithotripsy. The objective of this study was twofold: first, to quantify the range of operator duty cycle (ODC) and pedal activation time d
Publikováno v:
Journal of Endourology. 35:355-359
Introduction: Different techniques of laser lithotripsy (fragmentation, dusting, and popcorning) are commonly used during ureteroscopy. The efficiency of a single laser pulse is dependent on minimi...
Autor:
William W. Roberts, Khurshid R. Ghani, Timothy L. Hall, Kristian M Black, Brandon A Levin, Ali H Aldoukhi
Publikováno v:
Lasers in Medical Science. 36:1817-1822
High-power holmium lasers have become popular for ureteroscopic laser lithotripsy and dusting. Our aim was to investigate the effect of pulse duration and pulse energy on fiber-tip degradation when using high-power settings for popcorn lithotripsy. B
Autor:
Ali H. Khidhir
Publikováno v:
Iraqi Journal of Science. :3215-3220
This work presents an analytical study for simulating a Fabry-Perot Bi-stable etalon (F-P cavity) filled with a dispersive optimized nonlinear optical material (Kerr type) such as semiconductors Indium Antimonite (InSb). Depending on the obtained res
Publikováno v:
Lasers in Medical Science. 36:413-420
The purpose of this study was to investigate in vivo the biomechanical and morphological changes in soft palates of Wistar rats from non-ablative irradiation with a 9.3-μm CO2 laser. A blinded, randomized, controlled study was designed with 45 Wista
Autor:
Joel M.H. Teichman, Ali H Aldoukhi, Sami E Majdalany, William W. Roberts, Timothy L. Hall, Khurshid R. Ghani, Kristian M Black
Publikováno v:
World Journal of Urology. 39:1699-1705
Moses™ technology has been developed to improve holmium laser fragmentation at 1–2 mm distance from the stone. Because popcorn lithotripsy is a non-contact technique, we compared short pulse (SP) and Moses distance (MD) modes in an in vitro model
Publikováno v:
Urologic Clinics of North America. 46:193-205
Next-generation holmium laser systems provide the user with a range of parameters that can help optimize fragmentation efficiency. Ureteroscopic strategies broadly consist of fragmentation with active retrieval, or dusting, which uses low pulse energ
Autor:
Brian MacConaghy, Timothy L. Hall, Adam D. Maxwell, William W. Roberts, Ali H Aldoukhi, Jonathan D. Harper
Publikováno v:
Journal of Endourology. 33:113-119
Purpose: Holmium laser lithotripsy is a common modality used to fragment urinary stones during ureteroscopy. Laser energy deposited during activation produces heat and potentially causes thermal bioeffects. We aimed to characterize laser-induced heat
Autor:
Ali H. Khidhir
Publikováno v:
Iraqi Journal of Physics. 16:152-161
The analytical study of optical bistability is concerned in a fullyoptimized laser Fabry-Perot system. The related phenomena ofswitching dynamics and optimization procedure are also included.From the steady state of optical bistability equation can p
Autor:
Ali H Aldoukhi, Sorout Shalini, Khurshid R. Ghani, Adam J. Matzger, William W. Roberts, Sami E Majdalany, Derek S Frank
Publikováno v:
ACS biomaterials scienceengineering. 6(9)
Understanding the chemical characteristics of kidney stones and how the stone composition affects their fragmentation is key to improving clinical laser lithotripsy. During laser lithotripsy, two mechanisms may be responsible for stone fragmentation: