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Pulsed dye laser

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https://www.readbyqxmd.com/read/28702841/comparison-of-ketamine-and-ketofol-for-deep-sedation-and-analgesia-in-children-undergoing-laser-procedure
#1
Marija Stevic, Nina Ristic, Ivana Budic, Nebojsa Ladjevic, Branislav Trifunovic, Ivan Rakic, Marko Majstorovic, Ivana Burazor, Dusica Simic
The aim of our study was to research and evaluate cardiovascular and respiratory stability, clinical efficacy, and safety of two different anesthetic agents in pediatric patients who underwent Pulse dye (wavelength 595 nm, pulse duration 0-40 ms, power 0-40 J) and CO2 (wavelength 10,600 nm, intensity-fraxel mod with SX index 4 to 8, power 0-30 W) laser procedure. This prospective non-blinded study included 203 pediatric patients ASA I-II, aged between 1 month and 12 years who underwent short-term procedural sedation and analgesia for the laser procedure...
July 12, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28679262/laser-driven-resonance-of-dye-doped-oil-coated-microbubbles-experimental-study
#2
Guillaume Lajoinie, Jeong-Yu Lee, Joshua Owen, Pieter Kruizinga, Nico de Jong, Gijs van Soest, Eleanor Stride, Michel Versluis
Photoacoustic (PA) imaging offers several attractive features as a biomedical imaging modality, including excellent spatial resolution and functional information such as tissue oxygenation. A key limitation, however, is the contrast to noise ratio that can be obtained from tissue depths greater than 1-2 mm. Microbubbles coated with an optically absorbing shell have been proposed as a possible contrast agent for PA imaging, offering greater signal amplification and improved biocompatibility compared to metallic nanoparticles...
June 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28676850/current-therapeutic-approach-to-hypertrophic-scars
#3
REVIEW
Zrinka Bukvić Mokos, Anamaria Jović, Lovorka Grgurević, Ivo Dumić-Čule, Krešimir Kostović, Romana Čeović, Branka Marinović
Abnormal scarring and its accompanying esthetic, functional, and psychological sequelae still pose significant challe nges. To date, there is no satisfactory prevention or treatment option for hypertrophic scars (HSs), which is mostly due to not completely comprehending the mechanisms underlying their formation. That is why the apprehension of regular and controlled physiological processes of scar formation is of utmost importance when facing hypertrophic scarring, its pathophysiology, prevention, and therapeutic approach...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28675151/the-relationship-between-retinal-damage-and-current-intensity-in-a-pre-clinical-suprachoroidal-transretinal-stimulation-model-using-a-laser-formed-microporous-electrode
#4
Hiroyuki Kanda, Yukari Nakano, Yasuo Terasawa, Takeshi Morimoto, Takashi Fujikado
Suprachoroidal-transretinal stimulation (STS) is a stimulation method for retinal prostheses. For STS-type retinal prostheses, we developed a new type of stimulating electrode called a femtosecond laser-induced porous electrode (FLiP electrode). To verify the safety of FLiP electrode for STS, we investigated the characteristics of STS-induced retinal injury. Approach: Sixteen eyes of pigmented rabbits were studied in this in vivo study. For each examined eye, we implanted a single-channel FLiP electrode (diameter, 0...
July 4, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28665237/genital-angiokeratomas-of-fordyce-595-nm-variable-pulse-pulsed-dye-laser-treatment
#5
Ján Baumgartner, Mária Šimaljaková
BACKGROUND: Angiokeratoma of Fordyce (AF) are dark red or blue-black papules with scaly surface located on scrotum, labia majora and penis. Though usually asymptomatic, bleeding after mechanical trauma and sexual intercourse may occure. AF should be differentiated from malignant melanoma, angiosarcoma and other pigmented lesions. The treatment, usually asked from patients as the result of anxiety and social embarrassment should be performed in an non-aggresive manner. OBJECTIVES: To determine the safety and effectiveness of 595-nm variable-pulse pulsed dye laser (VPPDL) with Dynamic Cooling Device (DCD) in treatment of AF...
June 30, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/28665162/the-effect-of-pulsed-dye-laser-on-cutaneous-leishmaniasis-and-its-impact-on-the-dermatology-life-quality-index
#6
Mohamed L Elsaie, Shady M Ibrahim
BACKGROUND AND OBJECTIVE: Cutaneous leishmaniasis is a skin condition of prevalence especially in the Middle Eastern region. The Pulsed dye laser (PDL) has not been thoroughly evaluated for treatment of cutaneous leishmaniasis (CL). We assessed primarily the efficacy of 595nm PDL in the treatment of CL lesions and interpreted its impact on the quality of life of affected patients as measured by the Dermatology Life Quality Index (DLQI). PATIENTS AND METHODS: 25 lesions from 12 patients were treated with a single pass of PDL over the whole lesions to develop a purpuric end point...
June 30, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/28661996/pulsed-dye-laser-treatment-of-a-nonhealing-chronic-wound-that-developed-after-incision-and-drainage-of-a-hidradenitis-suppurativa-abscess
#7
Natanel Jourabchi, Gulsun Erdag, Bernard Cohen, Laura Anzaldi
No abstract text is available yet for this article.
June 28, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28652904/successful-treatment-of-unilateral-klippel-trenaunay-syndrome-with-pulsed-dye-laser-in-a-2-week-old-infant
#8
Hoda Rahimi, Habib Hassannejad, Hamideh Moravvej
Introduction: Klippel-Trenaunay syndrome (KTS) is a rare congenital mesodermal abnormality characterized by varicose veins, cutaneous capillary malformation, as well as bone and soft tissue hypertrophy. Case Report: A 2-week-old female infant presented to our clinic because of vascular nevus and progressive enlargement of her right extremities and trunk since birth. The patient was treated with 595-nm pulsed-dye laser (PDL). Her port-wine stain (PWS) disappeared completely after third PDL session and the soft tissue hypertrophy stopped...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28652903/complete-clearance-of-resistant-granuloma-faciale-with-pulsed-dye-laser-after-pre-treatment-with-mometasone-and-tacrolimus
#9
Daniel Micallef, Michael J Boffa
Introduction: Granuloma faciale is an uncommon inflammatory dermatosis which usually affects the face and is often resistant to treatment. Case Report: A 39-year-old English lady with Fitzpatrick skin phototype II presented with typical lesions of granuloma faciale, confirmed on biopsy, on her cheeks and nose. Treatment with ScleroPlus pulsed dye laser (Candela Corporation, Wayland, Mass) produced no visible improvement. The patient re-presented 5 years later with the same lesions, now more prominent. No improvement was noted with topical mometasone, however addition of topical tacrolimus caused significant flattening...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28650740/in-vivo-investigation-of-the-safety-and-efficacy-of-pulsed-dye-laser-with-two-spot-sizes-in-port-wine-stain-treatment-a-prospective-side-by-side-comparison
#10
Wenxin Yu, Hanru Ying, Yijie Chen, Yajing Qiu, Hui Chen, Yunbo Jin, Xi Yang, Tianyou Wang, Gang Ma, Xiaoxi Lin
OBJECTIVE: Pulsed dye laser (PDL) with 7 and 10 mm spot sizes is widely used on a regular basis for the treatment of port-wine stain (PWS). BACKGROUND DATA: No studies have reported on the differences in efficacy outcomes resulting from the use of different laser spot sizes in the treatment of PWS by PDL. Thus, an in vivo investigation into the differences in safety and efficacy of treatment between two spot sizes (7 mm vs. 10 mm) of PWS by PDL was conducted...
May 31, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28640760/successful-treatment-of-angiolymphoid-hyperplasia-with-eosinophilia-with-arterial-ligation-and-pulsed-dye-laser
#11
Nicole Warner, James G Marks, Todd V Cartee
No abstract text is available yet for this article.
July 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28621306/targeted-two-photon-chemical-apoptotic-ablation-of-defined-cell-types-in-vivo
#12
Robert A Hill, Eyiyemisi C Damisah, Fuyi Chen, Alex C Kwan, Jaime Grutzendler
A major bottleneck limiting understanding of mechanisms and consequences of cell death in complex organisms is the inability to induce and visualize this process with spatial and temporal precision in living animals. Here we report a technique termed two-photon chemical apoptotic targeted ablation (2Phatal) that uses focal illumination with a femtosecond-pulsed laser to bleach a nucleic acid-binding dye causing dose-dependent apoptosis of individual cells without collateral damage. Using 2Phatal, we achieve precise ablation of distinct populations of neurons, glia and pericytes in the mouse brain and in zebrafish...
June 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28618525/influence-of-liquid-crystalline-phases-on-the-tunability-of-a-random-laser
#13
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/28598555/experimental-and-numerical-investigation-on-the-transient-vascular-thermal-response-to-multi-pulse-nd-yag-laser
#14
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/28577186/multiple-laser-pulses-in-conjunction-with-an-optical-clearing-agent-to-improve-the-curative-effect-of-cutaneous-vascular-lesions
#15
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/28566911/intense-pulsed-light-and-q-switched-1-064-nm-neodymium-doped-yttrium-aluminum-garnet-laser-treatment-for-the-scarring-lesion-of-discoid-lupus-erythematosus
#16
Yun Sun Byun, Jee Hee Son, Yong Se Cho, Bo Young Chung, Hee Jin Cho, Chun Wook Park, Hye One Kim
Discoid lupus erythematosus (DLE) is a chronic form of cutaneous lupus that can cause permanent scarring. Treatment of DLE includes protection from sunlight and artificial sources of ultraviolet light, as well as systemic and topical medications. The first-line standard therapies are antimalarials and topical steroids. Other systemic therapies include systemic steroid, azathioprine, dapsone, and immunosuppressive agents. Topical tacrolimus and pimecrolimus have also been evaluated. Recent studies reported that several treatments, including pulsed dye laser, CO2 laser, intense pulsed light (IPL), and 1,064-nm long-pulse neodymium-doped yttrium aluminum (Nd:YAG) have been used for the cosmetic treatment of DLE...
June 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/28543887/treatment-of-venous-lake-with-multi-wavelength-595-and-1064-nm-lasers-in-asian-fitzpatrick-skin-type-iv-patients
#17
Jing Yang, Xiaohong Guo, Xiaorong Tong, Juan Tao
BACKGROUND: Multi-wavelength lasers are reportedly useful for treating venous lake (VL) in Caucasian patients. However, the same parameters may not be safe for Asian patients with Fitzpatrick skin type (FST) IV. PURPOSE: Report experience with using multi-wavelength laser for VL treatment in Asian patients with FST IV. METHODS: Seventeen episodes of VL in 15 Chinese patients with FST IV were treated. 595-nm pulsed dye (PDL) laser followed by 1,064-nm neodymium-doped yttrium aluminum garnet (Nd:YAG) laser were administered...
May 24, 2017: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/28528603/a-retrospective-study-of-multiple-sequential-light-and-laser-sources-to-activate-aminolevulinic-acid-in-the-treatment-of-acne-vulgaris
#18
Daniel P Friedmann, Mitchel P Goldman, Sabrina G Fabi, Isabella Guiha
Reports of the sequential use of multiple light and laser sources for topical 5-aminolevulinic acid (ALA) activation in photodynamic therapy (PDT) of inflammatory acne vulgaris are lacking. The authors sought to retrospectively compare field-directed ALA-PDT with blue light only, blue light + pulsed dye laser (PDL), blue light + intense pulsed light (IPL), blue light + PDL + IPL, or blue light + red light + PDL + IPL for inflammatory acne of the face or upper trunk. Results showed a trend toward greater patient-reported improvement with comparable tolerability using multiple, sequential light sources in ALA-PDT for acne vulgaris, albeit not statistically significant...
2017: Skinmed
https://www.readbyqxmd.com/read/28521677/molluscum-contagiosum-an-update
#19
Alexander Kc Leung, Benjamin Barankin, Kam Lun Hon
BACKGROUND: Molluscum contagiosum is a viral cutaneous infection in childhood that occurs worldwide. Physicians should familiarize themselves with this common condition. OBJECTIVE: To review in depth the epidemiology, pathophysiology, clinical manifestations, complications and, in particular, treatment of molluscum contagiosum. METHODS: A PubMed search was completed in Clinical Queries using the key term "molluscum contagiosum". Patents were searched using the key term "molluscum contagiosum" from www...
May 17, 2017: Recent Patents on Inflammation & Allergy Drug Discovery
https://www.readbyqxmd.com/read/28507898/optically-and-acoustically-triggerable-sub-micron-phase-change-contrast-agents-for-enhanced-photoacoustic-and-ultrasound-imaging
#20
Shengtao Lin, Anant Shah, Javier Hernández-Gil, Antonio Stanziola, Bethany I Harriss, Terry O Matsunaga, Nicholas Long, Jeffrey Bamber, Meng-Xing Tang
We demonstrate a versatile phase-change sub-micron contrast agent providing three modes of contrast enhancement: 1) photoacoustic imaging contrast, 2) ultrasound contrast with optical activation, and 3) ultrasound contrast with acoustic activation. This agent, which we name 'Cy-droplet', has the following novel features. It comprises a highly volatile perfluorocarbon for easy versatile activation, and a near-infrared optically absorbing dye chosen to absorb light at a wavelength with good tissue penetration...
June 2017: Photoacoustics
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