Optical Differentiation of Brain Tumors Based on Raman Spectroscopy and Cluster Analysis Methods.

In the present study, various combinations of dimensionality reduction methods with data clustering methods for the analysis of biopsy samples of intracranial tumors were investigated. Fresh biopsies of intracranial tumors were studied in the Laboratory of Neurosurgical Anatomy and Preservation of Biological Materials of N.N.

Multimodal method of tissue differentiation in neurooncology using Raman spectroscopy, fluorescence and diffuse reflectance spectroscopy.

Background: There is a need to expand the possibilities of urgent analysis of intracranial tumor type during resection. These measures are necessary to improve resection quality with preservation of intact tissues and avoiding recurrence and neurological impairment in postoperative period.

Objective: To create optical-spectral method for differentiating the intracranial tumor types.

[New mathematical method for automating the analysis of fluorescein angiograms of the human fundus].

Unlabelled: Specific software for digital image analysis is essential for adequate analysis and objectification of ophthalmic images, assessment of the prevalence of the pathological process, as well as for planning the amount of necessary medical intervention in various diseases.

Purpose: To develop a method for automatic analysis of angiographic images of the fundus for early diagnosis of vascular disorders and complications in a number of ophthalmic diseases.

Material And Methods: Initial angiograms of patients (=117) with vascular eye diseases and in healthy condition were analyzed in automatic mode using a new mathematical approach to digital processing of fundus fluorescein angiograms based on a three-stage algorithm for extracting information from images.

Melt flow of biopolymer through the cavities of an extruder die: Mathematical modelling.

This is an analytical solution of the two-dimensional non-isothermal mathematical model describing the change in the velocity profile of a cylindrical extrusion die. This solution is based on the following assumptions. The two-dimensional melt flow is asymmetric.

[Aggregation state of blood and the significance of its impairments in bleedings of portal genesis].

Account of such indices of blood rheology as viscosity, erythrocyte aggregation coefficient, indices of lipid peroxidation and endogenous intoxication allowed the authors to fulfill therapeutic treatment of patients with hemorrhage of portal genesis more efficiently.