Beauty Clinic 4th Dimension

Riga, Latvia

Beauty Clinic 4th Dimension

Riga, Latvia
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Kuzmina I.,University of Latvia | Lacis M.,University of Latvia | Spigulis J.,University of Latvia | Berzina A.,Clinic of Laser Plastics | Valeine L.,Beauty Clinic 4th Dimension
Journal of Biomedical Optics | Year: 2015

RGB (red-green-blue) technique for mapping skin chromophores by smartphones is proposed and studied. Three smartphones of different manufacturers were tested on skin phantoms and in vivo on benign skin lesions using a specially designed light source for illumination. Hemoglobin and melanin indices obtained by these smartphones showed differences in both tests. In vitro tests showed an increment of hemoglobin and melanin indices with the concentration of chromophores in phantoms. In vivo tests indicated higher hemoglobin index in hemangiomas than in nevi and healthy skin, and nevi showed higher melanin index compared to the healthy skin. Smartphones that allow switching off the automatic camera settings provided useful data, while those with "embedded" automatic settings appear to be useless for distant skin chromophore mapping. © 2015 Society of Photo-Optical Instrumentation Engineers (SPIE).


Jakovels D.,University of Latvia | Kuzmina I.,University of Latvia | Berzina A.,Clinic of Laser Plastics | Valeine L.,Beauty Clinic 4th Dimension | Spigulis J.,University of Latvia
Journal of Biomedical Optics | Year: 2013

A prototype low-cost RGB imaging system consisting of a commercial RGB CMOS sensor, RGB lightemitting diode ring light illuminator, and a set of polarizers was designed and tested for mapping the skin erythema index, in order to monitor skin recovery after phototherapy of vascular lesions, such as hemangiomas and telangiectasias. The contrast of erythema index (CEI) was proposed as a parameter for quantitative characterization of vascular lesions. Skin recovery was characterized as a decrease of the CEI value relative to the value before the treatment. This approach was clinically validated by examining 31 vascular lesions before and after phototherapy.© 2013 Society of Photo-Optical Instrumentation Engineers.


Kuzmina I.,University of Latvia | Diebele I.,University of Latvia | Jakovels D.,University of Latvia | Spigulis J.,University of Latvia | And 3 more authors.
Journal of Biomedical Optics | Year: 2011

A clinical trial comprising 334 pigmented and vascular lesions has been performed in three Riga clinics by means of multispectral imaging analysis. The imaging system Nuance 2.4 (CRi) and self-developed software for mapping of the main skin chromophores were used. Specific features were observed and analyzed for malignant skin melanomas: notably higher absorbance (especially as the difference of optical density relative to the healthy skin), uneven chromophore distribution over the lesion area, and the possibility to select the "melanoma areas" in the correlation graphs of chromophores. The obtained results indicate clinical potential of this technology for noncontact selection of melanoma from other pigmented and vascular skin lesions. © 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).


Kuzmina I.,University of Latvia | Diebele I.,University of Latvia | Spigulis J.,University of Latvia | Valeine L.,Beauty Clinic 4th Dimension | And 2 more authors.
Journal of Biomedical Optics | Year: 2011

Optical fiber contact probe diffuse reflectance spectroscopy and remote multispectral imaging methods in the spectral range of 400 to 1100 nm were used for skin vascular malformation assessment and recovery tracing after treatment by intense pulsed light. The results confirmed that oxy-hemoglobin relative changes and the optical density difference between lesion and healthy skin in the spectral region 500 to 600 nm may be successfully used for objective appraisal of the therapy effect. Color redness parameter a 2 is suggested as a diagnostic border to distinguish healthy skin and vascular lesions, and as the indicator of phototreatment efficiency. Valuable diagnostic information on large area (5 mm) lesions and lesions with uncertain borders can be proved by the multispectral imaging method. © 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).


PubMed | The Clinic of Laser Plastics, Beauty Clinic 4th Dimension and University of Latvia
Type: Journal Article | Journal: Journal of biomedical optics | Year: 2013

A prototype low-cost RGB imaging system consisting of a commercial RGB CMOS sensor, RGB light-emitting diode ring light illuminator, and a set of polarizers was designed and tested for mapping the skin erythema index, in order to monitor skin recovery after phototherapy of vascular lesions, such as hemangiomas and telangiectasias. The contrast of erythema index (CEI) was proposed as a parameter for quantitative characterization of vascular lesions. Skin recovery was characterized as a decrease of the CEI value relative to the value before the treatment. This approach was clinically validated by examining 31 vascular lesions before and after phototherapy.


Kuzmina I.,University of Latvia | Diebele I.,University of Latvia | Valeine L.,Beauty Clinic 4th Dimension | Jakovels D.,University of Latvia | And 3 more authors.
Progress in Biomedical Optics and Imaging - Proceedings of SPIE | Year: 2011

A clinical trial comprising 266 pigmented lesions and 49 vascular lesions has been performed in three Riga clinics by means of multi-spectral imaging analysis. The imaging system Nuance 2.4 (CRI) and self-developed software for mapping of the main skin chromophores were used. The obtained results confirm clinical potential of this technology for non-contact quantitative assessment of skin pathologies. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).


Diebele I.,University of Latvia | Kuzmina I.,University of Latvia | Lihachev A.,University of Latvia | Kapostinsh J.,Latvian Oncology Center | And 3 more authors.
Biomedical Optics Express | Year: 2012

A clinical trial on multi-spectral imaging of malignant and non-malignant skin pathologies comprising 17 melanomas and 65 pigmented common nevi was performed. Optical density data of skin pathologies were obtained in the spectral range 450-950 nm using the multispectral camera Nuance EX. An image parameter and maps capable of distinguishing melanoma from pigmented nevi were proposed. The diagnostic criterion is based on skin optical density differences at three fixed wavelengths: 540nm, 650nm and 950nm. The sensitivity and specificity of this method were estimated to be 94% and 89%, respectively. The proposed methodology and potential clinical applications are discussed. © 2012 Optical Society of America.

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