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https://www.readbyqxmd.com/read/29171656/investigation-of-the-presence-of-hpv-on-ktp-laser-fibers-following-ktp-laser-treatment-of-papilloma
#1
Sonam Dodhia, Peter C Baxter, Fei Ye, Michael J Pitman
OBJECTIVES: Recurrent respiratory papillomatosis is often treated with in-office laser procedures using a potassium titanyl phosphate (KTP) laser transmitted through a laser fiber. Although effective, this procedure has notable downsides, including the possibility of transmitting human papillomavirus (HPV) in the smoke plume and the high cost of these single-use fibers. The objective of this study is to determine if HPV can be detected on a laser fiber after use, with or without sterilization...
November 24, 2017: Laryngoscope
https://www.readbyqxmd.com/read/29105009/the-effect-of-the-ktp-laser-on-smear-layer-and-temperature-change-an-in-vitro-study
#2
Dilara Arslan, Alper Kuştarcı
The purpose of this study was to evaluate the effects of potassium-titanyl-phosphate (KTP) laser irradiation on smear layer removal and temperature changes of the root surfaces. Two hundred four extracted single-root human premolars were included. The canals were instrumented and divided into two main groups: group A (smear layer examination n:119) and group B (temperature change examination n:85). Each group was divided into subgroups (n:17) according to the different five laser power settings: A1, B1: 1 W-5...
November 6, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29078715/treatment-outcomes-of-in-office-ktp-ablation-of-vocal-fold-granulomas
#3
Laura M Dominguez, Raymond J Brown, C Blake Simpson
OBJECTIVE: To determine the effectiveness of in-office potassium-titanyl-phosphate (KTP) treatment of vocal fold granulomas and identify any predictors of complete lesion resolution. METHODS: A retrospective review of patients who underwent in-office KTP ablation of vocal fold granulomas between 2007 and 2016 was performed. Medical records were reviewed for use of acid suppression medication, prior surgical treatment, voice therapy, laser settings, number of treatments, follow-up time, and Voice Handicap Index-10 (VHI-10) scores...
December 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/29041674/rb-ba-side-diffused-ridge-waveguides-in-ktp
#4
Martin F Volk, Christian E Rüter, Detlef Kip
We report on characterization of ridge waveguides fabricated in KTP (KTiOPO4) by use of diamond-blade dicing and Rb/Ba ion exchange. The waveguides were prepared in substrates that have their z-axis in the surface plane, perpendicular to the waveguide direction. This hinders the RbBa ions from diffusion into the depth, as they are only mobile along the z-axis, and improves the waveguide's resistance against elevated temperature. Attenuation coefficients of 0.3 dB/cm (0.4 dB/cm) for TM (TE) polarization were measured at 1060 nm wavelength...
August 21, 2017: Optics Express
https://www.readbyqxmd.com/read/29041354/all-dielectric-ktiopo4-metasurfaces-based-on-multipolar-resonances-in-the-terahertz-region
#5
Jingyi Tian, Yuanqing Yang, Min Qiu, Fredrik Laurell, Valdas Pasiskevicius, Hoon Jang
We employ ferroelectrics to study the multipolar scattering in all-dielectric metasurfaces based on KTiOPO4 (KTP) micro-disks for efficient manipulation of electromagnetic waves in the THz spectral region (0.6-1.5 THz). By adjusting the aspect ratio of the disks near the multipolar resonances, we show that the KTP disk array can form a multifunctional metasurface that covers the entire range of the electromagnetic response with resonantly enhanced anisotropic properties. The proposed ferroelectric metasurfaces will provide a versatile platform to manipulate THz waves, and open possibilities to monolithically combine it with THz generation...
October 2, 2017: Optics Express
https://www.readbyqxmd.com/read/28895160/oncologic-outcomes-of-ktp-laser-surgery-versus-radiation-for-t1-glottic-carcinoma
#6
Jamal Ahmed, Ahmed Sherif Gabr Ibrahim, Laura M Freedman, David E Rosow
OBJECTIVES/HYPOTHESIS: To characterize outcomes for patients who underwent transoral microsurgery with potassium titanyl phosphate (KTP) laser resection of early glottic cancers and to compare outcomes with patients who received external beam radiation therapy. STUDY DESIGN: Retrospective cohort study. METHODS: The history of patients with T1 glottic carcinoma treated with curative primary radiation or transoral KTP laser resection was reviewed...
September 12, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28875542/analysis-on-the-local-structures-for-3d-1-impurities-ti-3-and-v-4-in-ktipo4
#7
C C Ding, S Y Wu, L J Zhang, Y Q Xu, Z H Zhang, M H Wu, B H Teng
Making use of the perturbation formulae for 3d(1) ions (Ti(3+) and V(4+) ) under orthorhombically compressed octahedra, the spin Hamiltonian parameters (SHPs) (g factors: gx , gy , gz and hyperfine structure constants: Ax , Ay , Az ) and local structures of the 3d(1) impurity centres C1 , C2 and C3 in KTP crystals are theoretically analyzed in a consistent way. The remarkable local distortions (i.e., the relative axial compression ratios 11.2%, 7.0% and 5.5% along Z axis and the relative planar bond length variation ratios 15...
September 6, 2017: Magnetic Resonance in Chemistry: MRC
https://www.readbyqxmd.com/read/28860782/the-safety-and-efficacy-of-front-firing-green-light-laser-endoscopic-en-bloc-photoselective-vapo-enucleation-of-non-muscle-invasive-bladder-cancer
#8
Bo Cheng, Xiaofu Qiu, Huanhui Li, Guosheng Yang
PURPOSE: Laser therapy provides an alternative option for treating non-muscle-invasive bladder cancer (NMIBC). However, the clinical evidence for potassium-titanyl-phosphate (KTP) laser en bloc resection is still limited. Here, we investigated the efficacy and safety of the 120-W front-firing KTP laser for the treatment of NMIBC. METHODS: A total of 64 patients with NMIBC treated with either a 120-W front-firing KTP-photoselective vapo-enucleation of the bladder tumor (PVEBT, n=34) or transurethral resection of the bladder tumor (TURBT, n=30) were included...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28855194/keratopigmentation-with-micronised-mineral-pigments-complications-and-outcomes-in-a-series-of-234-eyes
#9
Jorge L Alio, Olena Al-Shymali, Maria A Amesty, Alejandra E Rodriguez
AIM: To report the complications observed in a consecutive large series of cases treated with keratopigmentation (KTP). METHODS: KTP was performed in 234 eyes of 204 patients for therapeutic and cosmetic reasons. From them, 50 eyes of 29 patients suffered complications. Different KTP techniques and three generations of pigments (GP) were used. The follow-up period ranged from 4 months to 12 years. Light sensitivity (LS), visual field (VF) limitations and MRI alterations were considered functional complications...
August 30, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28819810/laser-assisted-surgery-of-the-upper-aero-digestive-tract-a-clarification-of-nomenclature-a-consensus-statement-of-the-european-laryngological-society
#10
Marc Remacle, Christoph Arens, Mostafa Badr Eldin, Guillermo Campos, Carlos Chiesa Estomba, Pavel Dulguerov, Ivana Fiz, Anastasios Hantzakos, Jerôme Keghian, Francesco Mora, Nayla Matar, Giorgio Peretti, Cesare Piazza, Gregory N Postma, Vyas Prasad, Elisabeth Sjogren, Frederik G Dikkers
Acronyms and abbreviations are frequently used in otorhinolaryngology and other medical specialties. CO2 laser-assisted transoral surgery of the pharynx, the larynx and the upper airway is a family of commonly performed surgical procedures termed transoral laser microsurgery (TLM). The abbreviation TLM can be confusing because of alternative modes of delivery. Classification and definition of the different types of procedures, performed transorally or transnasally, are proposed by the Working Committee for Nomenclature of the European Laryngological Society, emphasizing the type of laser used and the way this laser is transmitted...
August 17, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28776112/laser-treatments-of-active-acne
#11
REVIEW
Lauren E Wiznia, Mary L Stevenson, Arielle R Nagler
The utility of laser therapy is increasingly being recognized in the treatment of active acne vulgaris. We aimed to perform a narrative review of the medical literature on the use of laser therapy for the treatment of active acne vulgaris. We performed a PubMed literature search on September 1, 2016 using the search terms "active acne," "acne," "laser therapy," and "laser surgery." Case reports, case series, cohort, and controlled trials were included. Studies of lasers in the treatment of acne, including erbium glass, Nd:YAG, pulse dye laser (PDL), potassium titanyl phosphate (KTP) laser, and laser-based photodynamic therapy, have been published...
September 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28775324/a-novel-single-crystal-single-pass-source-for-polarisation-and-colour-entangled-photon-pairs
#12
Fabian Laudenbach, Sebastian Kalista, Michael Hentschel, Philip Walther, Hannes Hübel
We demonstrate a new generation mechanism for polarisation- and colour-entangled photon pairs. In our approach we tailor the phase-matching of a periodically poled KTP crystal such that two downconversion processes take place simultaneously. Relying on this effect, our source emits entangled bipartite photon states, emerging intrinsically from a single, unidirectionally pumped crystal with uniform poling period. Its property of being maximally compact and luminous at the same time makes our source unique compared to existing photon-entanglement sources and is therefore of high practical significance in quantum information experiments...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28750974/does-kinesiology-tape-increase-trunk-forward-flexion
#13
Heidi Preece, Peter White
INTRODUCTION: Non specific lower back pain is a common musculoskeletal disorder in manual labourers due to the strenuous nature of their job. Fear of pain can cause restrictions in trunk movement leading to reduced flexibility. Kinesiology Tape (KT) may be an option for treating low back stiffness. The present study investigated the immediate effect of KT on trunk flexion active range of motion. METHOD: 34 male participants (mean age ± SD: 42 ± 11), in physically demanding jobs, asymptomatic of pain, with a history of non specific lower back pain were randomly assigned to: 1) KT Intervention (KTI) or 2) KT Placebo (KTP)...
July 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28717543/outcome-analysis-of-transurethral-resection-versus-potassium-titanyl-phosphate-photo-selective-vaporization-of-the-prostate-for-the-treatment-of-benign-prostatic-hyperplasia-a-randomized-controlled-trial-with-4-years-follow-up
#14
Bimalesh Purkait, Rahul Janak Sinha, Krishna Swamy A Srinivas, Ankur Bansal, Ashok Kumar Sokhal, Vishwajeet Singh
OBJECTIVE: Photovaporization of prostate (PVP) is a newer surgical modality of benign prostatic hyperplasia (BPH) which is gaining importance recently. There are a few randomized controlled trials that showed safety and efficacy of PVP in comparison with transurethral resection of prostate (TURP) with limited follow-up period (<2 years). Here, we are presenting a comparative study performed on potassium titanyl phosphate (KTP) PVP laser versus TURP for the treatment of BPH with long-term follow-up period...
June 2017: Turkish Journal of Urology
https://www.readbyqxmd.com/read/28711781/the-nature-of-hydrogen-bonding-interactions-in-nonsteroidal-anti-inflammatory-drugs-revealed-by-polarized-ir-spectroscopy
#15
Barbara Hachuła
The influence of hydrogen-bonding interactions in the solid phase on the IR spectroscopic pattern of the νOH band of nonsteroidal anti-inflammatory drugs (NSAIDs) was studied experimentally by IR spectroscopy with the use of polarized light at two temperatures (293K and 77K) and in isotopic dilution. The neat and deuterated crystals of (S)-naproxen ((S)-NPX), (R)-flurbiprofen ((R)-FBP), (RS)-flurbiprofen ((RS)-FBP) and (RS)-ketoprofen ((RS)-KTP) were obtained by melt crystallization between the two squeezed CaF2 plates...
January 5, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28574694/two-barium-gold-iodates-syntheses-structures-and-properties-of-polar-baau-io3-5-and-nonpolar-hba4au-io3-12-materials
#16
Bing-Ping Yang, Chun-Li Hu, Fei-Fei Mao, Xiang Xu, Jiang-Gao Mao
Two new barium gold iodates, namely, BaAu(IO3)5 and HBa4Au(IO3)12, have been prepared. BaAu(IO3)5 crystallizes in the polar space group Pca21, whereas HBa4Au(IO3)12 crystallizes in the centrosymmetric space group P21/c. BaAu(IO3)5 consists of unique polar [Au(IO3)4](-) anions whose four iodate groups are located at both sides of the AuO4 plane and the polarity points in the [001̅] direction. BaAu(IO3)5 displays strong second-harmonic-generation (SHG) effects about 0.6KTiOPO4 (KTP) and is phase-matchable. Thermal properties, optical spectra analyses, and theoretical calculations are also reported...
June 2, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28569854/tunable-7-12%C3%A2-%C3%A2-%C3%AE-m-picosecond-optical-parametric-amplifier-based-on-a-liinse-sub-2-sub-mid-infrared-crystal
#17
Shanpeng Wang, Shibo Dai, Ning Jia, Nan Zong, Chunlong Li, Yu Shen, Tongtong Yu, Jie Qiao, Zeliang Gao, Qinjun Peng, Zuyan Xu, Xutang Tao
Mid-infrared (MIR) nonlinear optical crystals of LiInSe<sub>2</sub> (LISe) were grown by a modified Bridgman technique on a (001)-seed. A 7-12 μm widely tunable picosecond (ps) MIR optical parametric amplifier (OPA) based on a LISe crystal was demonstrated for the first time, to the best of our knowledge. The MIR OPA was pumped by a 30 ps 1064 nm Nd:YAG laser and injected by a KTiOPO<sub>4</sub> (KTP)-based widely tunable near-infrared seed. The idler operating at 7.5 μm with the highest pulse energy of 170 μJ was obtained under a pump energy of 14 mJ...
June 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28494300/behaviour-of-the-main-nonsteroidal-anti-inflammatory-drugs-in-a-membrane-bioreactor-treating-urban-wastewater-at-high-hydraulic-and-sludge-retention-time
#18
D M González-Pérez, J I Pérez, M A Gómez
The behaviour and removal efficiency of ibuprofen (IBU), diclofenac (DCF), ketoprofen (KPF), and naproxen (NPX) during the real urban wastewater treatment by an experimental full-scale MBR working at high sludge and hydraulic retention time (SRT, HRT) were determined. The MBR worked in denitrification/nitrification conformation at 35.4h of HRT (Q=0.45m(3)/h), 37 d of SRT and a recirculation flow rate of 4Q. The experiments were made under steady-state conditions, reaching a biodegradable organic matter removal higher than 99...
April 26, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28489235/long-term-follow-up-of-ktp-laser-turbinate-reduction-for-the-treatment-of-obstructive-rhinopathy
#19
Hemal Raja, Scott Mitchell, George Barrett, Ashish Sharma, Derek W Skinner
We investigated the subjective, long-term, patient-reported symptom control after endoscopic potassium titanyl phosphate (KTP) laser reduction of the inferior turbinates. Symptoms were listed preoperatively and patients were asked, via telephone interview, the status of their symptoms. Chi-square analysis was used to assess statistical significance of the surgical intervention. Thirty-six patients (male:female ratio: 5:4) aged 13 to 80 years (mean: 37.2) were available for follow-up. The mean follow-up time was 68...
April 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28472878/neuropeptide-kyotorphin-impacts-on-lipopolysaccharide-induced-glucocorticoid-mediated-inflammatory-response-a-molecular-link-to-nociception-neuroprotection-and-anti-inflammatory-action
#20
Juliana Perazzo, Carla Lima, Montserrat Heras, Eduard Bardají, Mônica Lopes-Ferreira, Miguel Castanho
Neuropeptide kyotorphin (KTP) is a potent analgesic if administered directly into the brain. In contrast, KTP-amide (KTP-NH2) is analgesic, neuroprotective, and anti-inflammatory following systemic administration, albeit its mechanism of action is unknown. The aim of this study was to shed light on the mechanism of action of KTP-NH2 at the molecular level. KTP-NH2 does not inhibit the enkephalinases angiotensin-converting-enzyme and dipeptidyl-peptidase 3. Intravital microscopy showed that KTP-NH2 decreased the number of rolling leukocytes in a mouse model of inflammation induced by lipopolysaccharide (LPS)...
August 16, 2017: ACS Chemical Neuroscience
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