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https://www.readbyqxmd.com/read/29140537/using-normal-and-high-pulse-coverage-with-picosecond-laser-treatment-of-wrinkles-and-acne-scarring-long-term-clinical-observations
#1
Christine Dierickx
OBJECTIVE: The picosecond 755 nm alexandrite laser using a diffractive lens array has demonstrated consistent clinical efficacy for improving the appearance of acne scarring and wrinkles amongst other benefits. This small pilot study is to assess the difference, if any, in clinical benefit if a higher than the standard protocol for number of pulses delivered to a tissue area is used compared to the standard protocol guidelines. METHOD: Seven subjects received treatment to one side of the face with a standard protocol number of laser pulses with the other side of the face receiving higher than standard number of pulses from the same 755 nm picosecond laser using an additional diffractive lens array...
November 15, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/29135036/prospective-studies-of-the-efficacy-and-safety-of-the-picosecond-755-1-064-and-532%C3%A2-nm-lasers-for-the-treatment-of-infraorbital-dark-circles
#2
Monique J Vanaman Wilson, Isabela T Jones, Joanna Bolton, Lisa Larsen, Douglas C Wu, Mitchel P Goldman
BACKGROUND: Infraorbital dark circles result from a combination of factors. The fractionated picosecond 755 nm alexandrite laser and dual wavelength picosecond Nd:YAG laser have not been examined as a method of addressing infraorbital hyperpigmentation. OBJECTIVE: To determine the efficacy and safety of treatment of infraorbital dark circles using fractionated picosecond 755 nm and dual wavelength picosecond Nd:YAG laser. METHODS AND MATERIALS: These trials did not utilize a comparative design; rather, these were separate, prospective, open-label, evaluator-blinded trials utilizing two treatment regimens: (i) 19 adult subjects were treated in a single session with the dual wavelengths of 532 nm and 1,064 nm in consecutive passes using the fractionated lens; (ii) 10 adult subjects were treated using the picosecond 755 nm laser via the fractionated lens in three treatment sessions at 3 week intervals...
November 14, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/29111604/a-comparitive-study-with-a-755%C3%A2-nm-picosecond-alexandrite-laser-with-a-diffractive-lens-array-and-a-532%C3%A2-nm-1-064%C3%A2-nm-nd-yag-with-a-holographic-optic
#3
Emil Tanghetti, John Jennings
BACKGROUND AND OBJECTIVES: This study was performed to better understand the cutaneous effects of using a fractional picosecond laser at 755 nm with a diffractive lens array and a picosecond Nd:YAG laser at 532 mn and 1,064 nm with a holographic optic. We characterized the injuries created by these devices on skin clinically and histologically over 24 hours. With this information we modeled the effects of these devices on a cutaneous target. METHODS: Eight patients, representing Fitzpatrick skin types I-VI, were treated on their backs with a picosecond Alexandrite laser with a diffractive lens array, as well as a picosecond Nd:YAG laser at 532 nm and 1,064 nm with a holographic optic...
November 7, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/29028045/led-pumped-alexandrite-laser-oscillator-and-amplifier
#4
Pierre Pichon, Adrien Barbet, Jean-Philippe Blanchot, Frédéric Druon, François Balembois, Patrick Georges
Taking advantage of light-emitting-diode (LED) performance breakthrough driven by the lighting market, we report, to the best of our knowledge, the first LED-pumped chromium-doped crystal laser oscillator and amplifier based on alexandrite crystals (Cr(3+):BeAl2O4). We developed a Ce:YAG concentrator as the pumped source, illuminated by blue LEDs that can be easily power scaled. With 2200 LEDs (450 nm), the Ce:YAG concentrator can deliver to the gain medium up to 268 mJ at 10 Hz at 550 nm with a irradiance of 8...
October 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/29020484/long-term-outcome-of-a-patient-with-paradoxical-hypertrichosis-after-laser-epilation
#5
Adam Honeybrook, Tascha Crossing, Eric Bernstein, Jason Bloom, Julie Woodward
One underreported, rare side effect of laser hair removal, is paradoxical hypertrichosis. It is largely unknown what the long-term outcomes are of patients who develop this complication. We report a 21-year-old, Fitzpatrick II, male patient, who had patchy areas of dark hair affecting various body areas. An Alexandrite 755 nm laser was used to address the desired areas at energies between 20-22 J/cm(2) at 10-12 week intervals over a course of 7 treatments. After 3 treatments, the patient noted a significant increase in the density and length of hairs involving the back, shoulders, neck and upper arms...
October 11, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/29020474/laser-assisted-hair-removal-for-facial-hirsutism-in-women-a-review-of-evidence
#6
Chun-Man Lee
Poly cystic ovarian syndrome (PCOS) has been described as the common diagnosis for hirsutism in women. Facial hirsutism is by far the most distressing symptom of hyperandrogenism in women with PCOS. A statistically significant improvement in psychological well-being has been reported in patients with PCOS allocated for laser-assisted hair removal. The theory of selective photothermolysis has revolutionised laser hair removal in that it is effective and safe, when operated by sufficiently trained and experienced professionals...
October 11, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/29016541/a-novel-treatment-of-acne-keloidalis-nuchae-by-long-pulsed-alexandrite-laser
#7
Abeer Tawfik, Mai Abdelraouf Osman, Iman Rashwan
BACKGROUND: Acne keloidalis nuchae (AKN) is a dermatological condition characterized by follicular-based papules and pustules that later form hypertrophic or keloid-like scars. Laser-assisted hair reduction such as 810-nm diode laser and 1,064-nm Nd:YAG laser have been used for treating AKN with promising results. OBJECTIVE: To evaluate the therapeutic effect and safety of alexandrite laser in the treatment of different lesions of AKN. METHODS: Seventeen male patients with AKN received 6 sessions of 755-nm alexandrite laser...
October 6, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28957192/demonstration-of-an-iron-fluorescence-lidar-operating-at-372%C3%A2-%C3%A2-nm-wavelength-using-a-newly-developed-nd-yag-laser
#8
Bernd Kaifler, Christian Büdenbender, Peter Mahnke, Matthias Damm, Daniel Sauder, Natalie Kaifler, Markus Rapp
We report on the development of a pulsed neodymium-doped yttrium aluminum garnet (Nd:YAG) laser operating at a 1116 nm wavelength. Because the third harmonic is within a few gigahertz of the 372 nm absorption line of iron, this laser system represents an alternative to alexandrite lasers commonly used in iron fluorescence lidars. With our prototype, we achieved a 0.5 W at 372 nm wavelength and a 100 Hz pulse repetition frequency. As a proof of concept, we show iron density measurements, which have been acquired using the novel lidar transmitter...
August 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28945623/successful-treatment-of-chronic-venous-stasis-hyperpigmentation-of-the-lower-limbs-with-the-picosecond-alexandrite-laser
#9
Douglas C Wu, Mitchel P Goldman
No abstract text is available yet for this article.
September 20, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28854299/response-to-laser-treatment-of-caf%C3%A3-au-lait-macules-based-on-morphologic-features
#10
Daniel A Belkin, Julia P Neckman, Hana Jeon, Paul Friedman, Roy G Geronemus
Importance: Response to laser treatment for café au lait macules (CALMs) is inconsistent and difficult to predict. Objective: To test the hypothesis that irregularly bordered CALMs of the "coast of Maine" subtype respond better to treatment than those of the smooth-bordered "coast of California" subtype. Design, Setting, and Participants: This retrospective case series included patients from 2 multiple-clinician US practices treated from 2005 through 2016...
November 1, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28791605/laser-and-light-treatments-for-hair-reduction-in-fitzpatrick-skin-types-iv-vi-a-comprehensive-review-of-the-literature
#11
REVIEW
Rachel A Fayne, Marina Perper, Ariel E Eber, Adam S Aldahan, Keyvan Nouri
Unwanted facial and body hair presents as a common finding in many patients, such as females with hirsutism. With advances in laser and light technology, a clinically significant reduction in hair can be achieved in patients with light skin. However, in patients with darker skin, Fitzpatrick skin types (FST) IV-VI, the higher melanin content of the skin interferes with the proposed mechanism of laser-induced selective photothermolysis, which is to target the melanin in the hair follicle to cause permanent destruction of hair bulge stem cells...
August 8, 2017: American Journal of Clinical Dermatology
https://www.readbyqxmd.com/read/28641206/efficacy-of-surgical-laser-therapy-in-the-management-of-oral-pigmented-lesions-a-systematic-review
#12
REVIEW
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...
August 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28566917/some-becker-s-nevus-melanocytes-remain-alive-after-treatment-with-q-switched-alexandrite-laser
#13
Han Jin Jung, Sun Young Moon, Mi Yeung Sohn, Yong Hyun Jang, Seok-Jong Lee, Do Won Kim, Weon Ju Lee
No abstract text is available yet for this article.
June 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/28501744/strategy-for-improved-nh2-detection-in-combustion-environments-using-an-alexandrite-laser
#14
Christian Brackmann, Bo Zhou, Per Samuelsson, Vladimir A Alekseev, Alexander A Konnov, Zhongshan Li, Marcus Aldén
A new scheme for NH2 detection by means of laser-induced fluorescence (LIF) with excitation around wavelength 385nm, accessible using the second harmonic of a solid-state Alexandrite laser, is presented. Detection of NH2 was confirmed by identification of corresponding lines in fluorescence excitation spectra measured in premixed NH3-air flames and on NH2 radicals generated through NH3 photolysis in a nonreactive flow at ambient conditions. Moreover, spectral simulations allow for tentative NH2 line identification...
May 4, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28498021/successful-treatment-of-becker-s-nevus-with-long-pulsed-1064nm-nd-yag-and-755nm-alexandrite-laser-and-review-of-the-literature
#15
Adam J Wulkan, Timothy McGraw, Mark Taylor
BACKGROUND: Becker's Nevus is an aesthetically troublesome condition secondary to hyperpigmentation and hypertrichosis. Although several lasers have been employed with varying degrees of success, the exact devices and treatment parameters have yet to be elucidated. OBJECTIVE: To assess the combination Nd:Yag and alexandrite laser as a safe and efficacious treatment for Becker's Nevus. METHODS: In a 20-year-old Fitzpatrick Skin Type IV male, a Becker's Nevus was treated with six sessions of long-pulsed 1,064nm Nd:Yag laser at six-week intervals followed by five sessions of long-pulsed 755nm alexandrite laser at three-month intervals...
May 12, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/28471788/localized-cutaneous-argyria-from-a-nasal-piercing-successfully-treated-with-a-picosecond-755-nm-q-switched-alexandrite-laser
#16
Daniel P Friedmann, Sara Buckley, Vineet Mishra
No abstract text is available yet for this article.
August 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28463045/mitigation-of-epidermal-growth-factor-receptor-inhibitor-induced-side-effects-utilizing-melanin-and-vascular-specific-lasers-a-case-report-series
#17
Karen Y Kuo, Bernice Kwong, Zakia Rahman
The advent of targeted chemotherapy has led to the emergence of new dermatologic toxicities. We sought to use lasers and light devices to treat recalcitrant cutaneous adverse effects related to cancer treatment. Three stage III or IV cancer patients with cutaneous complications due to epidermal growth factor receptor (EGFR) inhibitors were treated with melanin and vascular-specific laser and light technologies. Two patients reported reduction in papulopustular eruption following pulse dye laser (PDL) treatment...
March 2, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/28457309/ocular-injuries-secondary-to-alexandrite-laser-assisted-hair-removal
#18
Mohammed S Asiri, Majed Alharbi, Trad Alkadi, Marwan Abouammoh, Mohammed Al-Amry, Yahya ALZahrani, Sulaiman M Alsulaiman
PURPOSE: The aim of this study was to describe the clinical manifestations and outcomes of 4 patients who had sustained eye injury during alexandrite laser-assisted hair removal. METHODS: This was a retrospective case series of 4 patients who presented to 2 tertiary eye care hospitals over 2 years. Data on ophthalmic examination, spectral domain optical coherence tomography (Heidelberg Engineering, Heidelberg, Germany), and fundus fluorescein angiography were collected...
April 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28406866/successful-treatment-of-a-residual-thick-infantile-hemangioma-in-a-darker-phototype-pediatric-patient-using-the-755-nm-long-pulsed-alexandrite-laser
#19
Hao Feng, Arielle N B Kauvar
No abstract text is available yet for this article.
April 11, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28319270/evaluation-of-a-transparent-perfluorodecalin-infused-patch-as-an-adjunct-to-laser-assisted-tattoo-removal-a-pivotal-trial
#20
Brian S Biesman, Cara Costner
BACKGROUND AND OBJECTIVE: Laser-assisted treatment of tattoos is well recognized to produce opaque epidermal whitening that prevents multiple sequential passes during a single treatment session. The amount of epidermal whitening produced in association with the procedure can be minimized by topical application of perfluorodecalin (PFD), which is an optical clearing agent. This pivotal trial assessed the ability of a transparent PFD-infused patch used in conjunction with a Q-switched nanosecond laser in the treatment of tattoos to permit multiple laser passes during a single 5 minute treatment session in comparison to the number of passes that could be completed using conventional treatment of the tattoo with the laser alone...
March 20, 2017: Lasers in Surgery and Medicine
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