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Puslapis 1 nuo 2939 rezultatus
Percutaneous laser discectomy with the Ho:YAG laser.
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Prisijungti Registracija
A prototype Ho:YAG (2.15 microns) laser operating at 2-J/pulse, 3 Hz through a 600-microns fiber was employed to perform laser discectomies at the L3-4 disc through an 18G needle in five juvenile pigs. No temperature elevations were recorded in the posterior longitudinal ligament at the disc level
[Laser-tyndallometry in eyes with acute retinal necrosis syndrome. Erlanger Laser-tyndallometry study group].
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OBJECTIVE
Acute retinal necrosis syndrome (ARN) is a rapidly progressive viral necrotic retinitis. We used noninvasive measurement of aqueous flare to quantify blood-ocular barrier breakdown in eyes with ARN und to follow the inflammatory activity and treatment effects.
METHODS
We report on seven
[Lipolysis lasers].
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We use lipolysis lasers for around five years. The principle of those lasers is that, for some wavelengths, the fat, located in the adipocytes reacts as a chromophor. In order to allow the direct exposure of the adipocytes to the optical fiber (around 1mm diameter), this has to be inserted in the
Cardiac enzymes after transmyocardial laser treatment with CO2 laser.
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OBJECTIVE
The aim of the present study was to examine postoperative serum levels of cardiac enzymes after transmyocardial laser treatment (TML) and to evaluate any associations between this release, postoperative cardiac events and change in ejection fraction after 3 months'
[Electron histochemical characteristics of laser necrosis].
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Linear or dot-shaped lesions were inflicted on rat liver with Nd:YAG laser, and fine structural alterations of hepatocytes were studied in the specimens processed for an endoplasmic reticulum (ER) marker glucose-6-phosphatase (GP). 5-7 s after irradiation a severe cell damage and GP inhibition
[Lasers in dermatology].
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Lasers are mainly used in therapeutics for their thermic effects. In dermatology, the most appropriate is the argon laser and its only uncontroverted indication is part-wine stain. The blue-green radiations of the argon laser are selectively absorbed by the haemoglobin pigment, so that coagulation
Interstitial laser prostatectomy.
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In an attempt to minimize the need for hospitalization and the associated perioperative and postoperative morbidity, alternatives to transurethral resection of the prostate (the standard treatment modality for benign prostatic hyperplasia) have been sought. Various types of laser prostatectomy have
Interstitial laser prostatectomy.
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Serial gross and histopathologic examinations of the prostate following interstitial laser prostatectomy in the canine model demonstrated distinct zonal thermal changes around the entire active area of the interstitial thermal therapy (ITT) fiber. A large, well-demarcated area of acute coagulative
Interstitial laser hyperthermia.
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Experimental studies have shown that once the appropriate laser parameters are defined, interstitial laser hyperthermia (ILH) can produce well-defined, predictable tissue necrosis in solid viscera which heal safely with little functional or structural sequelae. Preliminary clinical studies have
Infrared laser soft tissue ablation versus ultraviolet excimer laser. Experimental introduction of the Hol:YAG-laser in oral surgery.
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The in vivo tissue ablation characteristics of a pulsed infrared laser (Hol:YAG, lambda = 2120 nm) and a pulsed excimer laser (XeCl, lambda = 308 nm) were studied in an animal model. Laser energy was delivered via nylon fibers for the Hol:YAG laser and via quartz fibers for the excimer laser. Laser
[Holmium:YAG infrared laser and UV-Excimer. Laser effects on oral mucosa].
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The in-vivo tissue ablation characteristics of a pulsed infrared laser (Holmium:YAG, lambda = 1980) and a pulsed excimer laser (XeCl, lambda = 308 nm) were studied. The holmium laser energy was coupled into nylon fibres. The excimer laser energy was coupled into quartz fibers. Laser incisions were
Laser-assisted hair transplantation: histologic comparison between CO2 and Ho:YAG lasers.
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BACKGROUND
Various laser wavelengths and devices have been advocated for use in the creation of recipient channels during hair transplant surgery, including flash-scanned CO2, Ho:YAG (lambda = 2.12 microm), and Er:YAG (lambda = 2.94 microm).
OBJECTIVE
To determine the tissue injury caused by
Laser treatment of coumarin-induced skin necrosis.
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Favourable results have been achieved by low energy He--Ne gas laser in the treatment of coumarin-induced extensive skin necroses. Two illustrative cases are reported.
[Laser in the management of syncumar necrosis].
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Endometrial laser ablation in rabbits: a comparative study of three laser types.
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Endometrial laser ablation is one of the alternatives to hysterectomy in cases of intractable uterine bleeding. It is currently performed using the Nd:YAG laser at 1.06 microns. The aim of this study was to compare the tissue effect of three types of laser irradiation (Nd:YAG laser at 1.06 and 1.32
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