Valentina Dvorzhak

Work place: Computer Science Department, Yuriy Fedcovitch Chernivtsi National University, Chernivtsi, Ukraine, 58002



Research Interests: Data Mining, Pattern Recognition, Computer Vision


Valentina Dvorzhak was born on September 27, 1982, in Kramatorsk, Ukraine. M.Sc. in Metallurgical Engineering (2004). Ph.D. in Technical Science, Donbass State Engineering Academy (2007). Current position – Assistant Professor of Computer science department, Chernivtsi National University, Ukraine. Research Interests: Data Mining and Analysis, Computer Vision and Pattern Recognition, Optics & Photonics, Biophysics, Metal Forming Technology & Equipment.

Author Articles
Analytical and Computer Polarization-Correlation Processing of Brest Tumors’ Laser Fields for Cancer Detection

By Yuriy Ushenko Valentina Dvorzhak Oleksandr Dubolazov Oleksandr Ushenko Ivan Mikirin Zhengbing Hu

DOI:, Pub. Date: 8 Dec. 2023

A new local-topological approach to describe the spatial and angular distributions of polarization parameters of multiply scattered optically anisotropic biological layers of laser fields is considered. A new analytical parameter to describe the local polarization structure of a set of points of coherent object fields, the degree of local depolarization (DLD), is introduced for the first time. The experimental scheme and the technique of measuring coordinate distributions (maps) of DLD The new method of local polarimetry was experimentally tested on histological specimens of biopsy sections of operatively extracted breast tumors. The measured DLD maps were processed using statistical, autocorrelation and scale-sampling approaches. Markers for differential diagnosis of benign (fibroadenoma) and malignant (sarcoma) breast tumors were defined.

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