Combined Application of Dual-Wavelength Fluorescence Monitoring and Contactless Thermometry during Photodynamic Therapy of Basal Cell Skin Cancer.

Unlabelled: was to assess the capabilities of combined application of dual-wavelength fluorescence visualization and contactless skin thermometry during photodynamic therapy monitoring (PDT) of basal cell cancer.

Materials And Methods: The study was performed at the University Clinic of Privolzhsky Research Medical University (Nizhny Novgorod). Nine clinically, dermatoscopically, and histologically verified foci of basal cell skin cancer were exposed to PDT sessions (wavelength of 662 nm, light dose density of 150 J/cm) with systemic application of chlorin-based photosensitizer Fotoditazin.

Information society and its impact on personality development.

The purpose of the study is to develop and test the original model which illustrates the development of personality in the information society. The study involved two Russian universities, higher educational institutions of the Arab Emirates and Kazakhstan. A total of 400 students participated in the research.

In vivo multimodal optical imaging of dermoscopic equivocal melanocytic skin lesions.

There is a wide range of equivocal melanocytic lesions that can be clinically and dermoscopically indistinguishable from early melanoma. In the present work, we assessed the possibilities of combined using of multiphoton microscopy (MPM) and optical coherence angiography (OCA) for differential diagnosis of the equivocal melanocytic lesions. Clinical and dermoscopic examinations of 60 melanocytic lesions revealed 10 benign lesions and 32 melanomas, while 18 lesions remained difficult to diagnose.

Identification of layers in optical coherence tomography of skin: comparative analysis of experimental and Monte Carlo simulated images.

Background/purpose: The goal of the study is comparative analysis of the layers in OCT images and the morphological structure of skin with thick and thin epidermis.

Methods: We analyzed the difference between skin with thin and thick epidermis in two ways. The first approach consisted in determination of the thicknesses of layers of skin with thin and thick epidermis of different localizations from experimental OCT images.

Coherent optical correlator based on combined halftone and position modulation of light phase.

Usually only a halftone (grayscale) modulation of light is used to present the processed and reference signals in the input plane of analog coherent optical (ACO) correlators, based on spatially integrating the product of two (processed and reference) signals. The halftone modulation requires two transparencies to record two signals separately, as the desired product of two spatial signals is obtained by sequential location of two spatial halftone records along the light path. Such an optical layout leads to the need for precision mutual alignment of two separate signal recordings.