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Skin Research and Technology

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https://www.readbyqxmd.com/read/29143429/an-overview-of-methods-to-mitigate-artifacts-in-optical-coherence-tomography-imaging-of-the-skin
#1
Saba Adabi, Audrey Fotouhi, Qiuyun Xu, Steve Daveluy, Darius Mehregan, Adrian Podoleanu, Mohammadreza Nasiriavanaki
BACKGROUND: Optical coherence tomography (OCT) of skin delivers three-dimensional images of tissue microstructures. Although OCT imaging offers a promising high-resolution modality, OCT images suffer from some artifacts that lead to misinterpretation of tissue structures. Therefore, an overview of methods to mitigate artifacts in OCT imaging of the skin is of paramount importance. Speckle, intensity decay, and blurring are three major artifacts in OCT images. Speckle is due to the low coherent light source used in the configuration of OCT...
November 16, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29139154/principal-component-analysis-of-three-dimensional-face-shape-identifying-shape-features-that-change-with-age
#2
M Kurosumi, K Mizukoshi
BACKGROUND: The types of shape feature that constitutes a face have not been comprehensively established, and most previous studies of age-related changes in facial shape have focused on individual characteristics, such as wrinkle, sagging skin, etc. In this study, we quantitatively measured differences in face shape between individuals and investigated how shape features changed with age. METHODS: We analyzed three-dimensionally the faces of 280 Japanese women aged 20-69 years and used principal component analysis to establish the shape features that characterized individual differences...
November 15, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29134755/analysis-of-the-influence-of-collagen-fibres-in-the-dermis-on-skin-optical-reflectance-by-monte-carlo-simulation-in-a-nine-layered-skin-model
#3
Y Masuda, Y Ogura, Y Inagaki, T Yasui, Y Aizu
BACKGROUND: Collagen fibres in the dermis play an important structural role in the skin. Age-related changes to these fibres cause wrinkles and slackness of facial skin. However, it is not clear how dermal collagen fibres affect skin colour. The purpose of this study was to clarify the influence of altered collagen fibres on skin colour, using both experimental measurement of fibre density and Monte Carlo simulations in an optical model of skin. METHODS: Reflection spectra were measured from the cheeks of 12 Japanese women (22-65 years old) by spectral colorimeter...
November 13, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29131424/influences-of-age-ethnic-group-and-skin-sites-on-a-provisory-skin-marking-experimentally-induced-in-vivo
#4
F Flament, R Bazin
BACKGROUND: To study capacity of skin to being imprinted by a marking head rapidly applied (10 seconds) onto the skin under a standardized pressure (15 kPa). MATERIAL AND METHODS: Referential photographs of skin markings, resulting from different times of application serve at grading the extent of skin imprints. The imprinting tool, equipped with 5 linear bulbs of different sizes but same thickness (1 mm), was applied onto the cheeks of 641 women of different ages (18-80 years) of 3 different ethnic groups...
November 12, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29131416/characterization-of-sweat-induced-with-pilocarpine-physical-exercise-and-collected-passively-by-metabolomic-analysis
#5
S L Souza, G Graça, A Oliva
BACKGROUND/PURPOSE: The elimination of the pain associated with needle picking is a strong motivation for the development of clinical non-invasive diagnostic methods. Sweat has been described as an alternative biological sample that may have a direct relation to the plasma composition. MATERIALS AND METHODS: In this study, analysis of sweat of human volunteers obtained by induction with pilocarpine is compared with sweat samples obtained by physical exercise and by passive collection along 7 hours...
November 12, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29067742/non-invasive-evaluation-of-secukinumab-efficacy-in-severe-plaque-psoriasis-with-confocal-microscopy-and-optical-coherence-tomography-a-case-report
#6
LETTER
G Odorici, A Losi, S Ciardo, G Pellacani, A Conti
No abstract text is available yet for this article.
October 25, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29067717/haptic-augmented-skin-surface-generation-toward-telepalpation-from-a-mobile-skin-image
#7
K Kim
BACKGROUND/PURPOSE: Very little is known about the methods of integrating palpation techniques to existing mobile teleskin imaging that delivers low quality tactile information (roughness) for telepalpation. However, no study has been reported yet regarding telehaptic palpation using mobile phone images for teledermatology or teleconsultations of skincare. METHODS: This study is therefore aimed at introducing a new algorithm accurately reconstructing a haptic augmented skin surface for telehaptic palpation using a low-cost clip-on microscope simply attached to a mobile phone...
October 25, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29067713/feature-analysis-of-ultrasound-elastography-image-for-quantitative-assessment-of-cutaneous-carcinoma
#8
M A Morris, C M Ring, R Managuli, B Saboury, D Mehregan, E Siegel, B Dasgeb
BACKGROUND: To evaluate the feasibility of using quantitative texture features computed from high frequency ultrasound and ultrasound elastography (USE) images in the discrimination of benign from malignant skin lesions. METHODS: A commercial ultrasound system with a 14 MHz transducer was used to visualize skin lesions requiring biopsy on clinical evaluation. Patients were enrolled over a 6-month period and imaged prospectively by operators blind to the histopathologic diagnosis...
October 25, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29067709/sensitive-skin-in-korean-population-an-epidemiological-approach
#9
Y R Kim, H I Cheon, L Misery, C Taieb, Y W Lee
BACKGROUND/PURPOSE: Sensitive skin is characterized by uncomfortable sensations in response to multiple factors that do not normally have irritant properties. We used an epidemiological approach to evaluate the prevalence and characteristics of sensitive skin in a Korean population, and compared the results with those of populations from other countries. METHODS: A representative nationwide sample of 1000 Koreans aged ≥15 years was selected. The methodology used in this study (questionnaires) was the same as that used in similar studies conducted in other countries...
October 25, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29057553/thickness-and-morphology-assessment-of-nail-polishes-applied-on-nails-by-high-definition-optical-coherence-tomography
#10
LETTER
C Monpeurt, E Cinotti, M Hebert, J Razafindrakoto, P Rubegni, M Fimiani, J L Perrot
No abstract text is available yet for this article.
October 23, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29057515/spread-of-fluid-role-of-tip-configurations-in-needles
#11
S Gomes, A Drakidis, P Silva, T A Lenau
BACKGROUND/PURPOSE: During the injection of a fluid in a tissue model, the fluid might be affected by the needle tip configuration and the number of channels. Thus, the objective of the present work is to observe the influence of different needle tips and number of channels on the spread of a fluid. METHODS: Fluid distribution data were obtained after injecting 0.3 mL of fluid into a foamed polymer model with a velocity of 2 mm/s. The spread area and the depth were determined for 3 different types of hypodermic needles: Single channel needles with bevel tip and blunt tip and a needle with conical tip and 3 internal channels...
October 23, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29057514/optical-coherence-tomography-an-efficient-imaging-method-for-the-visualization-of-human-epidermis-orientation
#12
LETTER
C Mias, J Filiol, G Josse
Recently, it has been shown that epidermal sheets taken from suction blisters are very appropriate skin samples for Multi-Photon (MP) microscopy. However, we observed that image quality was much better when the sample was visualized through the basale side. Thus, the epidermis orientation needs to be controlled before MP imaging. We observed that the use of standard laboratory binoculars led to a high rate of false results. In this context, we showed that optical coherence tomography provided clear images of the epidermis orientation without loss of sample integrity and thus represents an effective technique before slide sealing and MP analysis...
October 23, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29057513/optical-coherence-tomography-for-margin-definition-of-basal-cell-carcinoma-before-micrographic-surgery-recommendations-regarding-the-marking-and-scanning-technique
#13
N De Carvalho, S Schuh, N Kindermann, R Kästle, J Holmes, J Welzel
BACKGROUND/PURPOSE: Mohs Micrographic Surgery (MMS) is the preferred therapeutic treatment for high-risk basal cell carcinoma (BCC). Optical Coherence Tomography (OCT) is a non-invasive imaging technique that enables the diagnosis of BCC. We thought to determine the margins of BCCs with OCT, prior to MMS, to reduce the number of surgical steps. METHODS: Different permanent markers were tested on the skin regarding line width, resistance against disinfection and brightness in the OCT image...
October 23, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29057509/the-relationship-between-skin-function-barrier-properties-and-body-dependent-factors
#14
REVIEW
A K Dąbrowska, F Spano, S Derler, C Adlhart, N D Spencer, R M Rossi
BACKGROUND: Skin is a multilayer interface between the body and the environment, responsible for many important functions, such as temperature regulation, water transport, sensation, and protection from external triggers. OBJECTIVES: This paper provides an overview of principal factors that influence human skin and describes the diversity of skin characteristics, its causes and possible consequences. It also discusses limitations in the barrier function of the skin, describing mechanisms of absorption...
October 23, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29057506/reproducibility-of-measurement-of-skin-melanin-total-hemoglobin-and-oxygen-saturation
#15
LETTER
Theodore G Papaioannou, Marianna Karamanou, Dimitrios Tousoulis
No abstract text is available yet for this article.
October 23, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29057565/spectrophotometer-is-useful-for-assessing-vitiligo-and-chemical-leukoderma-severity-by-quantifying-color-difference-with-surrounding-normally-pigmented-skin
#16
M Hayashi, K Okamura, Y Araki, M Suzuki, T Tanaka, Y Abe, S Nakano, J Yoshizawa, Y Hozumi, M Inoie, T Suzuki
BACKGROUND: Acquired skin hypopigmentation has many etiologies, including autoimmune melanocyte destruction, skin aging, inflammation, and chemical exposure. Distinguishing lesions from normally pigmented skin is clinically important to precisely assess disease severity. However, no gold standard assessment method has been reported. We aimed to investigate whether spectrophotometers are useful for assessing vitiligo and rhododendrol (4-(4-hydroxyphenol)-2-butanol) (Rhododenol(®) )-induced leukoderma disease severity by quantifying skin color...
October 22, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29057507/a-feature-fusion-system-for-basal-cell-carcinoma-detection-through-data-driven-feature-learning-and-patient-profile
#17
P Kharazmi, S Kalia, H Lui, Z J Wang, T K Lee
BACKGROUND: Basal cell carcinoma (BCC) is the most common skin cancer, which is highly damaging in its advanced stages. Computer-aided techniques provide a feasible option for early detection of BCC. However, automated BCC detection techniques immensely rely on handcrafting high-level precise features. Such features are not only computationally complex to design but can also represent a very limited aspect of the lesion characteristics. This paper proposes an automated BCC detection technique that directly learns the features from image data, eliminating the need for handcrafted feature design...
October 22, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29057502/validation-of-digital-photographic-reference-scales-for-evaluating-facial-aging-signs
#18
Randa Jdid, Julie Latreille, Frédérique Soppelsa, Erwin Tschachler, Frédérique Morizot
BACKGROUND: Validated tools are essential to evaluate facial skin aging for both dermatological and cosmetic investigations. While many visual aging scales have been developed, few have been validated and none in terms of degree of distinguishability (DD). We developed and validated a series of visual scales using a novel digital interface for scoring facial skin aging in Caucasian women. MATERIALS AND METHODS: Three dermatologists independently established scales for 12 distinct aging signs from high-definition facial photographs of 400 adult women (Fitzpatrick phototypes I-IV) taken under standardized conditions...
October 22, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/28944579/morphological-criteria-of-feminine-upper-eyelashes-quantified-by-a-new-semi-automatized-image-analysis-application-to-the-objective-assessment-of-mascaras
#19
A Shaiek, F Flament, G François, M Vicic, S Cointereau-Chardron, E Curval, S Canevet-Zaida, O Coubard, Y Idelcaid
BACKGROUND: The wide diversity of feminine eyelashes in shape, length, and curvature makes it a complex domain that remains to be quantified in vivo, together with their changes brought by application of mascaras that are visually assessed by women themselves or make-up experts. METHODS: A dedicated software was developed to semi-automatically extract and quantify, from digital images (frontal and lateral pictures), the major parameters of feminine eyelashes of Mexican and Caucasian women and to record the changes brought by the applications of various mascaras and their brushes, being self or professionally applied...
September 24, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/28868761/relationship-between-the-retinacula-cutis-and-sagging-facial-skin
#20
A Sakata, K Abe, K Mizukoshi, T Gomi, I Okuda
BACKGROUND: Sagging skin is one of the most concerning esthetic issues for elderly individuals. Although reduced skin elasticity has been reported as the cause of sagging skin, a loss of skin elasticity alone is insufficient to explain sagging facial skin. This study investigated the mechanisms underlying sagging skin, with a focus on the subcutaneous network of collagenous fibers known as the retinacula cutis (RC). METHODS: To evaluate the structure of the RC noninvasively, tomographic images of the face were obtained using magnetic resonance imaging (MRI)...
September 4, 2017: Skin Research and Technology
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