Olga Demidova

ORCID: 0000-0002-5769-1952
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About
Contact & Profiles
Research Areas
  • Photoacoustic and Ultrasonic Imaging
  • Optical Coherence Tomography Applications
  • Antimicrobial agents and applications
  • Ultrasound and Hyperthermia Applications
  • Traumatic Brain Injury and Neurovascular Disturbances
  • Phenothiazines and Benzothiazines Synthesis and Activities
  • Angiogenesis and VEGF in Cancer
  • Synthesis and Biological Evaluation
  • Retinal Imaging and Analysis
  • Advanced Fluorescence Microscopy Techniques
  • Glaucoma and retinal disorders
  • Biochemical effects in animals
  • Neurological Disorders and Treatments

Far Eastern State Medical University
2015-2022

Seneca Polytechnic
2018-2021

Analysis of semi-transparent low scattering biological structures in optical coherence tomography (OCT) has been actively pursued the context lymphatic imaging, with most approaches relying on relative absence signal as a means detection. Here we present an alternate methodology based spatial speckle statistics, utilizing similarity distribution given voxel intensities to power function pure noise, visualize low-scattering interest. In human tumor xenograft murine model, show that these...

10.1364/boe.10.004207 article EN cc-by Biomedical Optics Express 2019-07-26

Texture analyses of optical coherence tomography (OCT) images have shown initial promise for differentiation normal and tumor tissues. This work develops a fully automatic volumetric delineation technique employing quantitative OCT image speckle analysis based on Gamma distribution fits. We test its performance in-vivo using immunodeficient mice with dorsal skin window chambers subcutaneously grown models. Tumor boundaries detection is confirmed epi-fluorescence microscopy, combined...

10.1364/boe.424045 article EN cc-by Biomedical Optics Express 2021-04-07

Radiation therapy (RT) is widely and effectively used for cancer treatment but can also cause deleterious side effects, such as a late-toxicity complication called radiation-induced fibrosis (RIF). Accurate diagnosis of RIF requires analysis histological sections to assess extracellular matrix infiltration. This invasive, prone sampling limitations, thus rarely used; instead, current practice relies on subjective clinical surrogates, including visual observation, palpation, patient...

10.1117/1.jbo.23.10.106003 article EN Journal of Biomedical Optics 2018-10-12

We present an optical coherence tomography (OCT) lymphangiography visualization approach based on analysis of speckle statistics. For <i>in-vivo</i> experimentation, normal and tumor tissues are examined in mouse dorsal skin window chamber model. In order to evaluate the statistics, OCT datasets acquired 3 spatial 1 temporal dimensions be divided then into smaller volumes interests. dimension, repeated same-location scanning is performed for simultaneous blood vessel detection through...

10.1117/12.2523291 article EN 2019-06-03

We propose an alternative optical coherence tomography (OCT) contrast mechanism based on analysis of speckle temporal synchronization using B-mode OCT structural images.We show that the changes in synchronized intensities with time may be used to distinguish between different tissue types, thus providing a novel and potentially useful for imaging.The developed methodology is tested scattering flow phantoms, vivo cervical cancer tumour grown within mouse dorsal skin window chamber...

10.17691/stm2018.10.1.05 article EN Sovremennye tehnologii v medicine 2018-03-01

The aim of the study was to compare effect glyproline peptides RGRGP (Arg-Gly-Arg-Gly-Pro), RGP (Arg-GlyPro), PRPGP (Pro-Arg-Pro-Gly-Pro) and PGPL (Pro-Gly-Pro-Leu) peptide substances at various concentrations on free radical oxidation intensity brain tissues Wistar males after intraperitoneal administration solutions traumatic injury. Material methods . tissue aged 2–3 months ( n = 126) were used in experiment. RGRGP, RGP, PRPGP, provided by Academician N.F. Myasoyedov. Traumatic injury...

10.18699/ssmj20220207 article EN cc-by Сибирский научный медицинский журнал 2022-04-21
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