keyword
MENU ▼
Read by QxMD icon Read
search

YAG laser

keyword
https://www.readbyqxmd.com/read/28641206/efficacy-of-surgical-laser-therapy-in-the-management-of-oral-pigmented-lesions-a-systematic-review
#1
Tariq Abduljabbar, Fahim Vohra, Zohaib Akram, Siti Mariam Ab Ghani, Nawwaf Al-Hamoudi, Fawad Javed
BACKGROUND: Oral pigmentation, especially in the gingiva poses esthetic problems. Laser therapy has been widely used for cosmetic therapy in dentistry. The aim of the present study was to systematically review the efficacy of surgical laser therapy (SLT) in the management of oral pigmented lesions (OPL). MATERIALS AND METHODS: The addressed focused question was "Is SLT effective in the management of OPL?" Databases (MEDLINE via PubMed; EMBASE; Cochrane Central Register of Controlled Trials and Cochrane Oral Health Group Trials Register databases) were searched from 1970 up to and including February 2017...
June 15, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28634633/erratum-to-nd-yag-laser-irradiation-associated-with-fluoridated-gels-containing-photo-absorbers-in-the-prevention-of-enamel-erosion
#2
L G S Pereira, S H Joao-Souza, S J C Bezerra, A B Borges, A C C Aranha, T Scaramucci
No abstract text is available yet for this article.
June 20, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28624755/stereo-vision-based-tracking-of-soft-tissue-motion-with-application-to-online-ablation-control-in-laser-microsurgery
#3
Andreas Schoob, Dennis Kundrat, Lüder A Kahrs, Tobias Ortmaier
Recent research has revealed that image-based methods can enhance accuracy and safety in laser microsurgery. In this study, non-rigid tracking using surgical stereo imaging and its application to laser ablation is discussed. A recently developed motion estimation framework based on piecewise affine deformation modeling is extended by a mesh refinement step and considering texture information. This compensates for tracking inaccuracies potentially caused by inconsistent feature matches or drift. To facilitate online application of the method, computational load is reduced by concurrent processing and affine-invariant fusion of tracking and refinement results...
June 8, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28622484/bactericidal-effect-of-er-yag-laser-activated-sodium-hypochlorite-irrigation-against-biofilms-of-enterococcus-faecalis-isolate-from-canal-of-root-filled-teeth-with-periapical-lesions
#4
Xiaogang Cheng, Doudou Xiang, Wenxi He, Jun Qiu, Bing Han, Qing Yu, Yu Tian
OBJECTIVE: This study was to evaluate the bactericidal effect of Er:YAG laser-activated sodium hypochlorite irrigation (Er:YAG + NaOCl) on biofilms of Enterococcus faecalis clinical isolate. BACKGROUND DATA: It was reported that Er:YAG + NaOCl had effective bactericidal effect on laboratory-adapted E. faecalis strain, while no study has reported its effect on the clinical isolate. METHODS: Eighteen E. faecalis strains were isolated from 39 root-filled teeth with periapical lesions, and their biofilm formation abilities were evaluated using the crystal violet staining method...
June 16, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28621453/the-pinhole-method-using-an-erbium-yag-laser-for-the-treatment-of-papular-acne-scars
#5
Sang Ju Lee, Jae Min Kim, Young Koo Kim, Seong Jun Seo, Kui Young Park
Papular acne scars are skin-colored or hypopigmented, soft and elevated lesions of the chin and trunk. Papular scars are one of the most difficult acne scars to treat. Herein, we reported two patients with papular acne scars on the chin that were successfully treated by the pinhole method using an Erbium (ER):YAG laser. Good cosmetic results were achieved in both patients. The side effects included mild, intra-, and post-procedural pain and erythema that resolved spontaneously within 2 weeks. The pinhole method with an Er:YAG laser could potentially be used as a safe and effective treatment for papular acne scars...
June 16, 2017: Dermatologic Therapy
https://www.readbyqxmd.com/read/28618525/influence-of-liquid-crystalline-phases-on-the-tunability-of-a-random-laser
#6
José Trull, Josep Salud, Sergio Diez-Berart, David O López
In this paper, we report the temperature behavior of an optimized disordered photonic system-based liquid crystal by means of heat capacity and refractive index measurements. The scattering system is formed by a porous borosilicate glass random matrix (about 60%) infiltrated with a smectogenic liquid crystal (about 16%) and a small amount of laser dye (0.1%). The rest of the scattering system is about 24% air, giving rise to a high refractive index contrast scattering system. Such a system has the functionality to change the refractive index contrast with temperature due to the liquid crystal temperature behavior...
May 2017: Physical Review. E
https://www.readbyqxmd.com/read/28616724/nd-yag-laser-therapy-for-rectal-and-vaginal-venous-malformations
#7
Lori A Gurien, Richard J Jackson, Michelle M Kiser, Gresham T Richter
BACKGROUND: Limited therapeutic options exist for rectal and vaginal venous malformations (VM). We describe our center's experience using Nd:YAG laser for targeted ablation of abnormal veins to treat mucosally involved pelvic VM. METHODS: Records of patients undergoing non-contact Nd:YAG laser therapy of pelvic VM at a tertiary children's hospital were reviewed. Symptoms, operative findings and details, complications, and outcomes were evaluated. RESULTS: Nine patients (age 0-24) underwent Nd:YAG laser therapy of rectal and/or vaginal VM...
June 14, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28615135/combined-therapy-for-epistaxis-by-hereditary-hemorrhagic-teleangiectasia-a-3-year-follow-up-study-on-45-patients
#8
Giorgos Papaspyrou, Dietmar Hecker, Maximilian Linxweiler, Bernhard Schick, Basel Al Kadah
Hereditary hemorrhagic telangiectasia (HHT) is a mutilating disease associated with the majority of patients with recurrent epistaxis episodes. The aim of this study was to present a single institution experience with patients treated for nasal epistaxis using a combination of Nd:YAG laser and argon plasma coagulation (APC) vs Nd:YAG laser alone, with a minimum follow-up of 3 years. 45 patients (21 men, 24 women) aged from 15 to 84 years with the diagnosis of HHT were treated in the Department of Otolaryngology, Head and Neck Surgery in Homburg/Saar between 10/2002 and 10/2012 because of epistaxis, using a combination of Nd:YAG laser and APC or Nd:YAG laser alone...
May 24, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28614319/led-side-pumped-nd-yag-laser-with-20-optical-efficiency-and-the-demonstration-of-an-efficient-passively-q-switched-led-pumped-solid-state-laser
#9
Chun Yu Cho, Chi Chih Pu, Kuan Wei Su, Yung Fu Chen
A LED-array-pumped Nd:YAG laser with optical conversion efficiency up to 20.2% is demonstrated by direct side-pumping without a coupling lens. The 810-nm LED array with a full-width-half-maximum of 30 nm and an area fill factor of 50% is designed to attain high spectral absorption efficiency with a pump density of 151.8  W/cm<sup>2</sup>. Furthermore, higher than 45% overall coupling efficiency is achieved by placing the LED array as close as possible to the side of the gain medium for overcoming the large pumped divergence...
June 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28602335/neodymium-yag-laser-posterior-capsulotomy-in-eye-with-an-intrastromal-inlay
#10
Phillip C Hoopes, Jordan D Desautels, Majid Moshirfar, Steven H Linn, Nick Mamalis
We report intraoperative issues, patient outcomes, and lessons learned from inadvertently contacting a Kamra corneal inlay with a neodymium:YAG (Nd:YAG) laser during a routine capsulotomy procedure for posterior capsule opacification. We also present scanning electron microscopic and histopathologic images from a series of 4 inlays implanted in postmortem porcine eyes that were purposely contacted with an Nd:YAG laser. Our capsulotomy patient developed a clinically insignificant and transient corneal opacity accompanied by mild blanching on the inlay...
May 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28602188/mapping-of-the-spatial-distribution-of-silver-nanoparticles-in-root-tissues-of-vicia-faba-by-laser-induced-breakdown-spectroscopy-libs
#11
L Krajcarová, K Novotný, M Kummerová, J Dubová, V Gloser, J Kaiser
The manuscript presents a procedure for optimal sample preparation and the mapping of the spatial distribution of metal ions and nanoparticles in plant roots using laser-induced breakdown spectroscopy (LIBS) in a double-pulse configuration (DP LIBS) in orthogonal reheating mode. Two Nd:YAG lasers were used; the first one was an ablation laser (UP-266 MACRO, New Wave, USA) with a wavelength of 266nm, and the second one (Brilliant, Quantel, France), with a fundamental wavelength of 1064nm, was used to reheat the microplasma...
October 1, 2017: Talanta
https://www.readbyqxmd.com/read/28598555/experimental-and-numerical-investigation-on-the-transient-vascular-thermal-response-to-multi-pulse-nd-yag-laser
#12
Dong Li, Ruohui Li, Hao Jia, Bin Chen, Wenjuan Wu, Zhaoxia Ying
BACKGROUND AND OBJECTIVE: Port wine stains (PWS) are congenital vascular malformations that progressively darken and thicken with age. Laser therapy is currently the most effective way in clinical practice for PWS. A 1,064 nm Nd:YAG laser in the near-infrared band can achieve a deeper treatment depth compared to the current widely adopted pulsed dye laser. However, because of its relatively weak absorption by blood, single-pulse Nd:YAG laser requires high energy density to cause effective vessel damage, but may inflict undesirable burning to surrounding collagen...
June 9, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28598516/intratumor-cisplatin-nephrotoxicity-in-combined-laser-induced-thermal-therapy-for-cancer-treatment
#13
Marcel N Palumbo, Onivaldo Cervantes, Cecilia Eugênio, Flávia T P Hortense, João C Ribeiro, Ana Amélia P Paolini, Antônio C Tedesco, Joel A Sercarz, Marcos B Paiva
INTRODUCTION: Thermal ablation of tumors by Nd:YAG laser has been growing as a multidisciplinary subspecialty defined as laser-induced thermal therapy (LITT), and has been increasingly accepted as a minimally invasive method for palliation of advanced or recurrent cancer. Previous studies have shown that adjuvant chemotherapy can potentiate laser thermal ablation of tumors leading to improved palliation in advanced cancer patients. OBJECTIVE: Evaluate nephrotoxicity by early markers of renal function in treating head and neck cancer using intra-tumor injections of cisplatin combined with laser-induced thermal therapy (CDDP-LITT)...
June 9, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28595565/gold-nanoparticles-by-laser-ablation-for-x-ray-imaging-and-protontherapy-improvements
#14
Torrisi Lorenzo, Nancy Restuccia, Irene Paterniti
Gold nanoparticles, 5-20 nm in diameter, were generated with a pulsed Nd:YAG laser at 1010 W/cm2 at solution concentrations ranging between 1-100 mg/ml. Nanoparticles were characterized using optical absorbance, X-ray fluorescence, SEM, and TEM. Biocompatible nanoparticle solutions were injected by intravenously into the tail veins of mice followed by X-ray imaging using 20-45 keV photons to evaluate the uptake and the clearance by different organs of the nanoparticles. The incremental X-ray contrast imaging using gold nanoparticles was investigated and measured...
June 8, 2017: Recent Patents on Nanotechnology
https://www.readbyqxmd.com/read/28590838/comparative-evaluation-of-effects-of-laser-modalities-on-shear-bond-strengths-of-veneering-porcelains-to-laser-sintered-substructures-an-in-vitro-study
#15
Oguzhan Gorler, Aysegul Goze Saygin
OBJECTIVE: Laser modalities and direct metal laser sintering (DMLS) have a potential to enhance micromechanical bonding between dental super- and infrastructures. However, the effect of different manufacturing methods on the metal-ceramic bond strength needs further evaluation. We investigated the effect of surface treatment with Er:YAG, Nd:YAG, and Ho:YAG lasers on the shear bond strength (SBS) of high-fusion dental porcelains (Vita and G-Ceram) to infrastructures prepared with DMLS in vitro settings...
June 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28588688/combined-effects-of-long-pulsed-neodymium-yttrium-aluminum-garnet-laser-diprospan-and-5-fluorouracil-in-the-treatment-of-keloid-scars
#16
Xiao-E Chen, Juan Liu, Afzaal Ahmed Bin Jameel, Maya Valeska, Jia-An Zhang, Yang Xu, Xing-Wu Liu, Hong Zhou, Dan Luo, Bing-Rong Zhou
Keloids are benign tumors that originate from scar tissues, but they usually overgrow beyond the original wounds. In a three-month single-center clinical trial, 69 patients were randomly divided into three groups. Patients in group 1 were treated with intralesional injection of diprospan (2 mg betamethasone disodium phosphate and 5 mg betamethasone dipropionate in 1 ml) with one-month intervals for three months. Patients in groups 2 and 3 were injected with a combination of 0.5 ml 5-fluorouracil (5-FU; 25 mg/ml) and diprospan as above for three months also...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28587124/comparison-study-between-rms-and-edge-detection-image-processing-algorithms-for-a-pulsed-laser-uwpi-ultrasonic-wave-propagation-imaging-based-ndt-technique
#17
Changgil Lee, Aoqi Zhang, Byoungjoon Yu, Seunghee Park
In this study, a non-contact laser ultrasonic propagation imaging technique was applied to detect the damage of plate-like structures. Lamb waves were generated by an Nd:YAG pulse laser system, while a galvanometer-based laser scanner was used to scan the preliminarily designated area. The signals of the structural responses were measured using a piezoelectric sensor attached on the front or back side of the plates. The obtained responses were analyzed by calculating the root mean square (RMS) values to achieve the visualization of structural defects such as crack, corrosion, and so on...
May 26, 2017: Sensors
https://www.readbyqxmd.com/read/28578999/utility-and-tolerability-of-the-long-pulsed-1064-nm-neodymium-yttrium-aluminum-garnet-lp-nd-yag-laser-for-treatment-of-symptomatic-or-disfiguring-vascular-malformations-in-children-and-adolescents
#18
Aditi S Murthy, Annelise Dawson, Deepti Gupta, Shanna Spring, Kelly M Cordoro
BACKGROUND: Vascular malformations manifest with pain, bleeding, disability, and disfigurement in a subset of children. There are scant data available on the utility and tolerability of laser surgery for symptomatic or disfiguring non-port-wine stain vascular malformations in children. OBJECTIVE: The objective of this study was to determine the utility and tolerability of the 1064-nm long-pulsed neodymium:yttrium-aluminum-garnet (LP Nd:YAG) laser for treatment of symptomatic or disfiguring vascular malformations in children...
June 1, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28577186/multiple-laser-pulses-in-conjunction-with-an-optical-clearing-agent-to-improve-the-curative-effect-of-cutaneous-vascular-lesions
#19
Jun Ma, Bin Chen, Yue Zhang, Dong Li, Zhuang Lin Xing
Port-wine stains (PWSs) usually respond poorly to pulsed dye laser treatment because of the shallow penetration and light absorption of melanin in the epidermis. Multiple laser pulses (MLPs) Nd:YAG laser in conjunction with an optical clearing agent can help to reduce the total laser energy required for blood coagulation. The quantitative optical clearing effect (OCE) of glycerol was investigated by using a tissue-like phantom. Thereafter, an in vitro capillary tube experimental system and an in vivo hamster dorsal skin chamber experiment for the laser treatment of PWSs were established to visually obtain the quantitative relationship between the OCE and the blood coagulation properties under the irradiation of 1064 nm MLPs...
June 3, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28570745/nd-yag-laser-vitreolysis-versus-pars-plana-vitrectomy-for-vitreous-floaters
#20
REVIEW
Jan Kokavec, Zhichao Wu, Justin C Sherwin, Alan Js Ang, Ghee Soon Ang
BACKGROUND: The vitreous is the clear jelly of the eye and contains fine strands of proteins. Throughout life the composition of this vitreous changes, which causes the protein strands in it to bundle together and scatter light before it reaches the retina. Individuals perceive the shadows cast by these protein bundles as 'floaters'. Some people are so bothered by floaters that treatment is required to control their symptoms. Two major interventions for floaters include Nd:YAG laser vitreolysis and vitrectomy...
June 1, 2017: Cochrane Database of Systematic Reviews
keyword
keyword
601
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"