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Alexandrite 755

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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/29020484/long-term-outcome-of-a-patient-with-paradoxical-hypertrichosis-after-laser-epilation
#4
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/29016541/a-novel-treatment-of-acne-keloidalis-nuchae-by-long-pulsed-alexandrite-laser
#5
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/28854299/response-to-laser-treatment-of-caf%C3%A3-au-lait-macules-based-on-morphologic-features
#6
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/28471788/localized-cutaneous-argyria-from-a-nasal-piercing-successfully-treated-with-a-picosecond-755-nm-q-switched-alexandrite-laser
#7
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/28406866/successful-treatment-of-a-residual-thick-infantile-hemangioma-in-a-darker-phototype-pediatric-patient-using-the-755-nm-long-pulsed-alexandrite-laser
#8
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
#9
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
https://www.readbyqxmd.com/read/28002102/755-nm-q-switched-alexandrite-laser-as-a-treatment-for-melanonychia-caused-by-onychomycosis
#10
Sang Ju Lee, Joon Seok, Kui Young Park, Seong Jun Seo
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/27868243/simulation-of-laser-tattoo-pigment-interaction-in-a-tissue-mimicking-phantom-using-q-switched-and-long-pulsed-lasers
#11
K J Ahn, B J Kim, S B Cho
BACKGROUND: Laser therapy is the treatment of choice in tattoo removal. However, the precise mechanisms of laser-tattoo pigment interactions remain to be evaluated. METHODS: We evaluated the geometric patterns of laser-tattoo pigment particle interactions using a tattoo pigment-embedded tissue-mimicking (TM) phantom. RESULTS: A Q-switched (QS) neodymium-doped yttrium aluminum garnet laser was used at settings of 532-, 660-, and 1064-nm wavelengths, single-pulse and quick pulse-to-pulse treatment modes, and spot sizes of 4 and 7 mm...
November 20, 2016: Skin Research and Technology
https://www.readbyqxmd.com/read/27746661/successful-treatment-of-tattoos-with-a-picosecond-755-nm-alexandrite-laser-in-asian-skin
#12
Sang Hyung Lee, Mi-Hye Lee, Tai-Kyung Noh, Kwang-Ho Choi, Chong-Hyun Won, Sung Eun Chang, Mi-Woo Lee, Jee-Ho Choi
No abstract text is available yet for this article.
October 2016: Annals of Dermatology
https://www.readbyqxmd.com/read/27746641/prospective-comparison-of-dual-wavelength-long-pulsed-755-nm-alexandrite-1-064-nm-neodymium-yttrium-aluminum-garnet-laser-versus-585-nm-pulsed-dye-laser-treatment-for-rosacea
#13
Hyun-Min Seo, Jung-In Kim, Han-Saem Kim, Young-Jun Choi, Won-Serk Kim
BACKGROUND: Rosacea treatments including oral/topical medications and laser therapy are numerous but unsatisfactory. OBJECTIVE: To compare the effectiveness of the dual wavelength long-pulsed 755-nm alexandrite/1,064-nm neodymium: yttrium-aluminum-garnet laser (LPAN) with that of 585-nm pulsed dye laser (PDL) for rosacea. METHODS: This was a randomized, single-blinded, comparative study. Full face received four consecutive monthly treatments with LPAN or PDL, followed-up for 6 months after the last treatment...
October 2016: Annals of Dermatology
https://www.readbyqxmd.com/read/27721561/picosecond-pulse-duration-laser-treatment-for-dermal-melanocytosis-in-asians-a-retrospective-review
#14
Takafumi Ohshiro, Toshio Ohshiro, Katsumi Sasaki, Kazuo Kishi
Background and aims: Recently novel picosecond duration lasers (ps-lasers) have been developed for the treatment of multicolored and recalcitrant tattoos, and safety and efficacy have been reported. We therefore hypothesized that the ps-laser could be an alternative treatment for dermal pigmented lesions and performed a retrospective review to evaluate the efficacy and safety of the ps-laser. Subjects and methods: A retrospective photographic review of 10 patients with dermal pigmented lesions was performed (ages from 4 months to 52 yr), 6 nevus of Ota, 3 ectopic Mongolian spots and 1 Mongolian spots...
June 29, 2016: Laser Therapy
https://www.readbyqxmd.com/read/27681221/safety-and-efficacy-of-a-novel-diffractive-lens-array-using-a-picosecond-755%C3%A2-nm-alexandrite-laser-for-treatment-of-wrinkles
#15
Robert A Weiss, David H McDaniel, Margaret A Weiss, Anne Marie Mahoney, Karen L Beasley, Christian R Halvorson
INTRODUCTION: Picosecond lasers have been reported to be effective for removal of tattoo pigment. This prospective study evaluated the efficacy and safety of the treatment of peri-oral and -ocular wrinkles using a novel diffractive lens array coupled with a picosecond 755 nm alexandrite laser. METHODS: Forty female subjects presenting with wrinkles from photodamage were enrolled in an IRB approved study. Subjects received four picosecond diffractive lens array treatments to the full face at 1 month intervals...
January 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/27467229/a-retrospective-analysis-of-the-treatment-of-melasma-using-a-fractional-long-pulsed-alexandrite-laser-in-korean-patients
#16
Min Kyung Lee, Kyung Sik Min, Eun Joo Park, Kwang Ho Kim, Kwang Joong Kim
BACKGROUND: Long-pulsed, 755-nm, alexandrite lasers have been shown to be effective and safe in the treatment of pigmentary lesions. OBJECTIVE: Clinical outcomes and side effects in the treatment of melasma using a fractional, long-pulsed, alexandrite laser were assessed. MATERIALS AND METHODS: Forty-eight patients with melasma received 2 to 4 treatment sessions of fractional, long-pulsed, alexandrite laser at 2 to 3 weeks intervals. The parameter of treatment was 60 to 80 J/cm without dynamic cooling device using 15-mm spot size of fractional hand piece, with a 0...
August 2016: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/27410635/femtosecond-kerr-lens-mode-locked-alexandrite-laser
#17
Shirin Ghanbari, Reza Akbari, Arkady Major
The generation of 170 fs pulses at 755 nm from a Kerr-lens mode-locked Alexandrite laser was demonstrated. The laser was pumped at 532 nm and produced 780 mW of average output power with 9.8% of optical-to-optical efficiency. To the best of our knowledge, these are the shortest pulses that have been produced from a mode-locked Alexandrite laser to date.
June 27, 2016: Optics Express
https://www.readbyqxmd.com/read/27252086/the-histology-of-skin-treated-with-a-picosecond-alexandrite-laser-and-a-fractional-lens-array
#18
Emil A Tanghetti
BACKGROUND AND OBJECTIVES: The treatment of acne scars and wrinkles with a picosecond Alexandrite laser was recently FDA cleared. In 2014 we presented our initial histologic findings with this device on in vivo and ex vivo skin. This current study expands on the 2014 pilot study with an investigation of different energy settings using histology and the confocal microscope to describe the changes observed in the skin. MATERIALS AND METHODS: We used a 755 nm picosecond Alexandrite laser with a fractional optic with three different energy settings to treat in vivo...
September 2016: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/27060688/facial-rejuvenation-via-the-sequential-combined-use-of-multiple-laser-modalities-safety-and-efficacy
#19
Douglas C Wu, Richard E Fitzpatrick
BACKGROUND AND OBJECTIVES: Multi-modal combination treatments for facial rejuvenation offer the potential to achieve superior results in a single treatment session. In this study, we evaluate the safety and efficacy of combining multiple laser modalities in a single treatment session. METHODS: Fifty patients underwent a multi-modal facial laser resurfacing procedure consisting of the sequential use of 595 nm pulsed dye laser, 755 nm alexandrite laser, superficial fractionated and fully ablative CO2 laser, superficial fully ablative erbium-YAG laser, and deep fractionated ablative CO2 laser in a single treatment session...
August 2016: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/26922302/treatment-of-pigmentary-disorders-in-patients-with-skin-of-color-with-a-novel-755-nm-picosecond-q-switched-ruby-and-q-switched-nd-yag-nanosecond-lasers-a-retrospective-photographic-review
#20
COMPARATIVE STUDY
Melissa Kanchanapoomi Levin, Elise Ng, Yoon-Soo Cindy Bae, Jeremy A Brauer, Roy G Geronemus
BACKGROUND AND OBJECTIVES: Laser procedures in skin of color (SOC) patients are challenging due to the increased risk of dyspigmentation and scarring. A novel 755 nm alexandrite picosecond laser has demonstrated effectiveness for tattoo removal and treatment of acne scars. No studies to date have evaluated its applications in pigmentary disorders. The purpose of this retrospective study was to evaluate the safety profile and efficacy of the picosecond alexandrite laser compared to the current standard treatment, Q-switched ruby and neodynium (Nd):YAG nanosecond lasers, for pigmentary disorders in SOC patients...
February 2016: Lasers in Surgery and Medicine
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