نتایج جستجو برای: laser assisted hatching
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Laser assisted machining is an alternative to conventional machining of hard and/or difficult-to-process materials which involves pre-heating of a focused area with a laser beam over the surface of the workpiece to cause localized thermal softening along the path of the cutting action. The main advantage that laser assisted machining has over conventional machining is the increased material rem...
IMPORTANCE A reliable procedure is needed to solve the problem of difficult airway in patients with bilateral vocal cord paralysis without adversely affecting patient "voice quality." OBJECTIVES To compare the results of laser-assisted posterior cordotomy with diathermy-assisted posterior cordotomy for bilateral vocal cord paralysis in regard to dyspnea severity, voice quality, and aspiration...
laseror microdrill-assisted technique may enable better outcomes in terms of intraand post-operative complications as well as of hearing gain as compared with classical stapedotomy technique. Materials and Methods: Eighty-two subjects undergoing primary stapes surgery for otosclerosis were enrolled for this study as having a least pure tone average (PTA) air-bone gap (ABG) of 35 dB. Patients we...
any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...
Postsurgical scars are of significant concern to both the patients and surgeons. Different laser systems have been used to accelerate and improve the healing process in surgical scars. Some studies have demonstrated the benefits of prophylactic laser application on pre-scars. It seems that using laser energy in the early phase of the healing process may produce changes in the physiology of woun...
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