keyword
MENU ▼
Read by QxMD icon Read
search

CO2 laser

keyword
https://www.readbyqxmd.com/read/29033365/laser-procedure-for-female-urinary-stress-incontinence-a-review-of-the-literature
#1
C Conté, T Jauffret, S Vieillefosse, J F Hermieu, X Deffieux
INTRODUCTION: There is increasing interest in noninvasive treatment of female stress urinary incontinence (SUI), including a vaginal laser procedure. In view of a lack of data on this technique, we conducted a non-systematic review of the literature. METHODS: We reviewed studies concerning the laser treatment of SUI from PubMed, Medline, the Cochrane Library and Web of Science. Study design, outcome measure, number of participants, procedural complications and results were analyzed...
October 12, 2017: Progrès en Urologie
https://www.readbyqxmd.com/read/29030376/disfiguring-facial-pyoderma-vegetans-with-an-excellent-outcome
#2
James Keitley, Liezel Griffin, Luisa Motta, Janice Ferguson, Helen Young
We describe a case of disfiguring facial pyoderma vegetans in order to highlight the challenges in managing this rare skin condition and review the literature.A 54-year-old woman presented to dermatology clinic with a 3-month history of a left-sided facial lesion, which had been treated as an infected sebaceous cyst. The lesion had dramatically increased in size in the weeks prior to presentation. There was a history of Crohn's disease and ileal adenocarcinoma, both of which were in remission. A clinical diagnosis of pyoderma vegetans was made and the patient responded well to immunosuppressive therapy with oral ciclosporin...
October 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29028008/atmospheric-boundary-layer-co2-remote-sensing-with-a-direct-detection-lidar-instrument-based-on-a-widely-tunable-optical-parametric-source
#3
Erwan Cadiou, Dominique Mammez, Jean-Baptiste Dherbecourt, Guillaume Gorju, Jacques Pelon, Jean-Michel Melkonian, Antoine Godard, Myriam Raybaut
We report on the capability of a direct detection differential absorption lidar (DIAL) for range resolved and integrated path (IPDIAL) remote sensing of CO2 in the atmospheric boundary layer (ABL). The laser source is an amplified nested cavity optical parametric oscillator (NesCOPO) emitting approximately 8 mJ at the two measurement wavelengths selected near 2050 nm. Direct detection atmospheric measurements are taken from the ground using a 30 Hz frequency switching between emitted wavelengths. Results show that comparable precision measurements are achieved in DIAL and IPDIAL modes (not better than a few ppm) on high SNR targets such as near range ABL aerosol and clouds, respectively...
October 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/29022079/co2-laser-stapedotomy-safety-influence-of-laser-energy-and-time-on-bone-conduction-hearing-levels
#4
Uwe Schönfeld, Hu Weiming, Veit M Hofmann, Sergije Jovanovic, Andreas E Albers
Total laser energy in CO2 stapedotomy depends on the laser settings and the amount of applications. It is unclear if the amount of total laser energy affects bone-conduction hearing thresholds and if possible effects are temporary or permanent. Alterations of bone-conduction hearing thresholds after single or multiple-shot CO2 laser stapedotomy were analyzed between 1 and 3 weeks and 1.5-6 months after primary (n = 501) or revision surgeries (n = 153) and correlated to time, laser energy, frequency, surgical technique, and pathology encountered in revision stapedotomy...
October 11, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28994558/flexible-co2-laser-fiber-first-look-at-the-learning-curve-required-in-gynecological-laparoscopy-training
#5
Valeria S Vanni, Jessica Ottolina, Giorgio Candotti, Laura M Castellano, Iacopo Tandoi, Francesca DE Stefano, Giorgia Poppi, Stefano Ferrari, Massimo Candiani
BACKGROUND: The advent of flexible CO2 laser fiber to gynecology arena might represent a turning point in the use of laser energy on a large-scale basis in gynecological surgery. However, there might be some concerns regarding the degree of surgical skills required to use the flexible system. The purpose of our study is to evaluate whether flexible CO2 laser fiber is technically accessible. METHODS: Fourteen residents in Obstetrics and Gynecology without surgical experience attending laparoscopic box training with both flexible CO2 laser fiber and traditional line-of-sight CO2 laser using Lumenis AcuPulse Duo CO2 laser (Lumenis, Israel) were prospectively enrolled...
October 9, 2017: Minerva Ginecologica
https://www.readbyqxmd.com/read/28987101/conjugating-precision-and-acquisition-time-in-a-doppler-broadening-regime-by-interleaved-frequency-agile-rapid-scanning-cavity-ring-down-spectroscopy
#6
Riccardo Gotti, Davide Gatti, Piotr Masłowski, Marco Lamperti, Michele Belmonte, Paolo Laporta, Marco Marangoni
We propose a novel approach to cavity-ring-down-spectroscopy (CRDS) in which spectra acquired with a frequency-agile rapid-scanning (FARS) scheme, i.e., with a laser sideband stepped across the modes of a high-finesse cavity, are interleaved with one another by a sub-millisecond readjustment of the cavity length. This brings to time acquisitions below 20 s for few-GHz-wide spectra composed of a very high number of spectral points, typically 3200. Thanks to the signal-to-noise ratio easily in excess of 10 000, each FARS-CRDS spectrum is shown to be sufficient to determine the line-centre frequency of a Doppler broadened line with a precision of 2 parts over 10(11), thus very close to that of sub-Doppler regimes and in a few-seconds time scale...
October 7, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28986576/fractional-laser-releases-tumor-associated-antigens-in-poorly-immunogenic-tumor-and-induces-systemic-immunity
#7
Masayoshi Kawakubo, Trevor J Cunningham, Shadmehr Demehri, Dieter Manstein
Currently ablative fractional photothermolysis (aFP) with CO2 laser is used for a wide variety of dermatological indications. This study presents and discusses the utility of aFP for treating oncological indications. We used a fractional CO2 laser and anti-PD-1 inhibitor to treat a tumor established unilaterally by the CT26 wild type (CT26WT) colon carcinoma cell line. Inoculated tumors grew significantly slower in aFP-treated groups (aFP and aFP + anti-PD-1 groups) and complete remission was observed in the aFP-treated groups...
October 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28985086/gingival-melanin-depigmentation-by-er-yag-laser-a-literature-review
#8
Verica Pavlic, Zlata Brkic, Sasa Marin, Smiljka Cicmil, Mirjana Gojkov-Vukelic, Akira Aoki
Laser ablation is recently suggested as a most effective and reliable technique for depigmentation of melanin hyperpigmented gingiva. To date, different lasers have been used for gingival depigmentation (CO2, diode, Nd:YAG, Er:YAG and Er,Cr:YSGG lasers). The use of Er:YAG laser for depigmentation of melanin hyperpigmented gingiva has gained increasing importance in recent years. The purpose of this study was to report removal of gingival melanin pigmentation using an Er:YAG laser in a literature review. The main outcomes, such as improvement of signs (clinical parameters of bleeding, erythema, swelling and wound healing), symptoms (pain) and melanin recurrence/repigmentation were measured...
October 6, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/28984020/single-step-reagentless-laser-scribing-fabrication-of-electrochemical-paper-based-analytical-devices
#9
William Reis de Araujo, Carolina M R Frasson, Wilson A Ameku, José R Silva, Lúcio Angnes, Thiago Rlc Paixão
Herein we describe the use of a single-step laser scribing process to pattern nanostructured electrodes on paper-based devices. This facile and low-cost technique eliminates the need for chemical reagents or controlled conditions. Our process involves the use of a CO2 laser to pyrolyze the surface of the paperboard, producing a conductive porous non-graphitizing carbon material composed of graphene sheets and composites with aluminosilicate nanoparticles. The new electrode material was extensively characterized, and it exhibited high conductivity and an enhanced of active/geometric area ratio, because of which it was well suited for electrochemical purposes...
October 5, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28956066/erratum-to-long-term-reliability-of-fractioned-co2-laser-as-a-treatment-for-vulvovaginal-atrophy-vva-symptoms
#10
Annalisa Pieralli, Claudia Bianchi, Manuela Longinotti, Serena Corioni, Noemi Auzzi, Angelamaria Becorpi, Maria Grazia Fallani, Giuseppe Cariti, Felice Petraglia
In original publication, the Fig. 1 was incorrect. The correct figure has been given below.
September 27, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28953124/laser-excisional-treatment-for-vaginal-intraepithelial-neoplasia-to-exclude-invasion-what-is-the-risk-of-complications
#11
Francesco Sopracordevole, Lorenzo Moriconi, Jacopo Di Giuseppe, Lara Alessandrini, Elvia Del Piero, Giorgio Giorda, Monica Buttignol, Giovanni De Piero, Vincenzo Canzonieri, Andrea Ciavattini
OBJECTIVE: We undertook a retrospective analysis of the incidence of complications of carbon dioxide (CO2) laser excision for high-grade vaginal intraepithelial neoplasia (HG-VaIN). MATERIALS AND METHODS: Retrospective large case series on 128 CO2 laser excisions for HG-VaIN in 106 women treated at the Department of Gynecologic Oncology, Oncologic Referral Center, Aviano, Italy. These procedures were performed under local anesthesia with a 20-W continuous laser beam focused to a 0...
October 2017: Journal of Lower Genital Tract Disease
https://www.readbyqxmd.com/read/28937751/high-precision-simultaneous-18-o-16-o-13-c-12-c-and-17-o-16-o-analyses-for-%C3%A2%C2%B5g-quantities-of-caco3-by-tunable-infrared-laser-absorption-spectroscopy
#12
Saburo Sakai, Shinichi Matsuda, Toshihide Hikida, Akio Shimono, Barry J McManus, Mark S Zahniser, David D Nelson, David Dettman, Danzhou Yang, Naohiko Ohkouchi
Stable isotope ratios ((18)O/(16)O, (13)C/(12)C and (17)O/(16)O) in carbonates have contributed greatly to understanding of Earth and planetary systems, climates, and history. Current methods for measuring isotopologues of CO2 derived from CaCO3 are primarily gas-source isotope ratio mass spectroscopy (IRMS). However, IRMS has drawbacks, such as mass overlap by multiple CO2 isotopologues and contaminants, the requirement of careful sample purification, and use of major instrumentation needing permanent installation and a high power electrical supply...
September 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28929060/laser-assisted-double-layer-endoscopic-repair-of-laryngeal-clefts-our-experience-in-11-cases
#13
Danah Aljomah, Jaber Alshammari
Laryngeal cleft is a rare congenital malformation of the respiratory tract leading to a high level of morbidity and mortality, recently being diagnosed with increased frequency. Management throughout the years included medical and surgical. The open surgical technique is more commonly used although it has higher risk and need longer post-operative care. Recently surgical endoscopic repair was introduced using different techniques. To evaluate the clinical features of infants and children presenting with laryngeal clefts, and review endoscopic management modality especially the technique and results of repair using double-layer (2 layers) technique...
September 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28923173/co2-laser-for-the-genitourinary-syndrome-of-menopause-how-many-laser-sessions
#14
Stavros Athanasiou, Eleni Pitsouni, Matthew E Falagas, Stefano Salvatore, Themos Grigoriadis
OBJECTIVES: The aim of this prospective study was to assess the efficacy of 3, 4 or 5 CO2-laser sessions for the management of the genitourinary syndrome of menopause (GSM). METHODS: Postmenopausal women with moderate to severe symptoms of dyspareunia, wanting to resume/retain sexual activity, were treated with 3-5 laser sessions depending on symptom severity/presence, sexual function, clinical findings and women's preference following the third laser application...
October 2017: Maturitas
https://www.readbyqxmd.com/read/28922374/fractional-laser-exposure-induces-neutrophil-infiltration-n1-phenotype-into-the-tumor-and-stimulates-systemic-anti-tumor-immune-response
#15
Masayoshi Kawakubo, Shadmehr Demehri, Dieter Manstein
BACKGROUND: Ablative fractional photothermolysis (aFP) using a CO2 laser generates multiple small diameter tissue lesions within the irradiation field. aFP is commonly used for a wide variety of dermatological indications, including treatment of photodamaged skin and dyschromia, drug delivery and modification of scars due to acne, surgical procedures and burns. In this study we explore the utility of aFP for treating oncological indications, including induction of local tumor regression and inducing anti-tumor immunity, which is in marked contrast to current indications of aFP...
2017: PloS One
https://www.readbyqxmd.com/read/28915288/successful-treatment-of-keloid-with-fractionated-carbon-dioxide-co2-laser-and-laser-assisted-drug-delivery-of-triamcinolone-acetonide-ointment-in-an-african-american-man
#16
Ekaterina Kraeva, Derek Ho, Jared Jagdeo
Keloids are fibrous growths that occur as a result of abnormal response to dermal injury. Keloids are cosmetically disfiguring and may impair function, often resulting in decreased patient quality-of-life. Treatment of keloids remains challenging, and rate of recurrence is high. We present a case of a 39-year-old African-American man (Fitzpatrick VI) with a 10-year history of keloid, who was successfully treated with eight sessions of fractionated carbon dioxide (CO2) laser immediately followed by laser-assisted drug delivery (LADD) of topical triamcinolone acetonide (TAC) ointment and review the medical literature on fractionated CO2 laser treatment of keloids...
September 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28913910/rapid-and-high-resolution-stable-isotopic-measurement-of-biogenic-accretionary-carbonate-using-an-online-co2-laser-ablation-system-standardization-of-the-analytical-protocol
#17
Arpita Sreemany, Melinda Kumar Bera, Anindya Sarkar
RATIONALE: The elaborate sampling and analytical protocol associated with the conventional dual-inlet isotope ratio mass spectrometry has long hindered high-resolution climate studies from biogenic accretionary carbonates. Laser-based on-line systems, in comparison, produce rapid data, but suffer from unresolvable matrix effects. It is, therefore, necessary to resolve these matrix effects to take advantage of the automated laser-based method. METHODS: Two marine bivalve shells (one aragonite and one calcite) and one fish otolith (aragonite) were first analysed using a CO2 laser ablation system attached to a continuous flow isotope ratio mass spectrometer under different experimental conditions (different laser power, sample untreated vs vacuum roasted)...
September 14, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28912937/relieving-pain-in-oral-lesions-of-pemphigus-vulgaris-using-the-non-ablative-non-thermal-co2-laser-therapy-ntclt-preliminary-results-of-a-novel-approach
#18
Nasrin Zand, Parvin Mansouri, Mohsen Fateh, Leila Ataie-Fashtami, Samad Rezaee Khiabanloo, Farid Safar, Reza Chalangari, Katalin Martits, Afshan Shirkavand
Introduction: Pemphigus vulgaris (PV) is a chronic, serious autoimmune mucocutaneous bullous disease. Oral lesions in PV may be extremely painful. This pain may adversely affect the patients' oral intake and quality of life. This before-after clinical trial was designed to assess the pain relieving effects of single session of non-ablative, non-thermal CO2 laser therapy (NTCLT) in oral lesions of PV. Methods: Fifty painful oral lesions of fourteen patients with PV were illuminated by CO2 laser (power: 1 W, scanning the lesions with rapid circular motion of the handpiece) passing through a thick layer of transparent gel with high water content...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28903553/monitoring-microbial-mineralization-using-reverse-stable-isotope-labeling-analysis-by-mid-infrared-laser-spectroscopy
#19
Xiyang Dong, Maik A Jochmann, Martin Elsner, Armin H Meyer, Leonard E Bäcker, Mona Rahmatullah, Daniel Schunk, Guido Lens, Rainer U Meckenstock
Assessing the biodegradation of organic compounds is a frequent question in environmental science. Here, we present a sensitive, inexpensive, and simple approach to monitor microbial mineralization using reverse stable isotope labeling analysis (RIL) of dissolved inorganic carbon (DIC). The medium for the biodegradation assay contains regular organic compounds and (13)C-labeled DIC with (13)C atom fractions (x((13)C)DIC) higher than natural abundance (typically 2-50%). The produced CO2 (x((13)C) ≈ 1.11%) gradually dilutes the initial x((13)C)DIC allowing to quantify microbial mineralization using mass-balance calculations...
October 17, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28902250/effect-of-cpp-acp-paste-with-and-without-co2-laser-irradiation-on-demineralized-enamel-microhardness-and-bracket-shear-bond-strength
#20
Nasrin Farhadian, Loghman Rezaei-Soufi, Seyed Farzad Jamalian, Maryam Farhadian, Shahrzad Tamasoki, Milad Malekshoar, Bahareh Javanshir
Introduction: Many patients seeking orthodontic treatment already have incipient enamel lesions and should be placed under preventive treatments. The aim of this in vitro study was to evaluate the effect of CPP-ACP paste and CO2 laser irradiation on demineralized enamel microhardness and shear bond strength of orthodontic brackets. Methods: Eighty caries-free human premolars were subjected to a demineralization challenge using Streptococcus mutans. After demineralization, the samples were randomly divided into five equal experimental groups: Group 1 (control), the brackets were bonded without any surface treatment; Group 2, the enamel surfaces were treated with CPP-ACP paste for 4 minutes before bonding; Group 3, the teeth were irradiated with CO2 laser beams at a wavelength of 10...
July 2017: Dental Press Journal of Orthodontics
keyword
keyword
40953
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"