Background: Laser test spots are a preliminary assessment performed on a small area of the skin to evaluate patients' reaction to laser therapy. Despite their recognized importance, there is a gap in knowledge among dermatologists regarding laser test spot practices.
Objective: The authors aim to explore dermatologists' test spot practices.
Methods: A survey was performed among Association of Academic Cosmetic Dermatology members.
Results: Laser test spot practices varied widely between dermatologists, with 3.0% "always," 22.7% "frequently," 54.5% "occasionally," 16.7% "rarely," and 3.0% "never" performing test spots. Most dermatologists (59.4%) wait more than 2 weeks before evaluating a test spot. Furthermore, 68.3% of the respondents use the same laser settings for the test spot as they would for the actual treatment. Regarding location, 60.9% of dermatologists perform laser test spots in the same area intended for treatment, while 39.1% choose another inconspicuous area.
Conclusion: Establishing definitive protocols for laser test spots may reduce variability in practice and enhance the overall safety and efficacy of laser treatments.
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http://dx.doi.org/10.1097/DSS.0000000000004515 | DOI Listing |
Metrologia
January 2024
National Institute of Standards and Technology, 100 Bureau Dr, Gaithersburg, MD 20899, United States of America.
Upgrades to the vacuum wavelength calibration service at the National Institute of Standards and Technology are reported. The instrumentation centerpiece is an optical frequency comb stabilized to a GPS-disciplined oscillator, thereby providing direct traceability to the SI second. Historically, the service has covered lasers at the popular interferometry wavelengths red and green.
View Article and Find Full Text PDFEnergy Fuels
January 2025
PolySense Lab, Dipartimento Interateneo di Fisica, University and Polytechnic of Bari, Via Amendola 173, Bari 70126, Italy.
A compact and portable gas sensor based on quartz-enhanced photoacoustic spectroscopy (QEPAS) for the detection of methane (C1), ethane (C2), and propane (C3) in natural gas (NG)-like mixtures is reported. An interband cascade laser (ICL) emitting at 3367 nm is employed to target absorption features of the three alkanes, and partial least-squares regression analysis is employed to filter out spectral interferences and matrix effects characterizing the examined gas mixtures. Spectra of methane, ethane, and propane mixtures diluted in nitrogen are employed to train and test the regression algorithm, achieving a prediction accuracy of ∼98%, ∼96%, and ∼93% on C1, C2, and C3, respectively.
View Article and Find Full Text PDFNano Lett
January 2025
Department of Chemistry, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, Division of Nanomaterials & Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China.
The development of viscous-crude oil and water separation technology is important for overcoming pollution caused by oil spills. Although some separators responding to light, electric, and temperature have been proposed, their poor structural homogeneity and inferior controllability, together with weak capillary forces, hinder the rapid salvage of viscous crude oil. Herein, a Joule-heated hydrophobic porous oil/water separator is reported, which has advantages of low energy consumption (169.
View Article and Find Full Text PDFPhytochem Anal
January 2025
Rehabilitation Pharmacy Center, Affiliated Beijing Rehabilitation Hospital, Capital Medical University, Beijing, China.
Introduction: Angelica sinensis is one of the most popular traditional Chinese medicines (TCM) and has been extensively used to treat various diseases. Hundreds of endogenous ingredients have been isolated and identified from this herb, but their spatial distribution within the plant root is largely unknown.
Objectives: In this study, we tried to investigate and map within-tissue spatial distribution of metabolites in Angelica sinensis roots.
Chin Med J (Engl)
January 2025
Beijing Institute of Basic Medical Sciences, Beijing 100850, China.
Background: Neurological dysfunction is a common complication of traumatic brain injury (TBI), and early treatments are critical for the long-term prognosis. This study aimed to investigate whether hypidone hydrochloride (YL-0919) improves neurological function impairment in mice with TBI.
Methods: TBI was induced in adult male C57BL/6J mice using the controlled cortical impact (CCI) method.
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