1. Saratov State University

    0 Comments Leave a Comment

    1-15 of 66 1 2 3 4 5 »
    1. Mentioned In 66 Articles

    2. Average refractive index of tendon as a function of water content

      Average refractive index of tendon as a function of water content
      Experimental data on the dependence of the average refractive index of rat tail tendon (RTT) on water content are reported. Using optical coherence tomography, the average group refractive index (at a wavelength of 930 nm) and cross-section area of rat tail tendon fascicle specimens during their air-drying and rehydration were monitored. The dependence of the average group refractive index of RTT ( n g ) on the volume fraction of water ( C ...
      Read Full Article
    3. Low-Coherence Reflectometry and Speckle Polarimetry in the Monitoring of Human Skin Pathologic Changes

      Low-Coherence Reflectometry and Speckle Polarimetry in the Monitoring of Human Skin Pathologic Changes
      We present the results of the study of normal and pathologic human skin using low-coherence reflectometry and speckle polarimetry. The statistical characteristics of local polarisation states in the individual coherence areas (speckles) of the forward scattered laser radiation demonstrate high sensitivity to the pathologic changes of the biotissue morphology in vitro. The analysis of the attenuation rate of the low-coherence reflectometer signal depending on the probing depth provides additional information ...
      Read Full Article
    4. Alternative Contrast Mechanism in Optical Coherence Tomography: Temporal Speckle Synchronization Effects

      Alternative Contrast Mechanism in Optical Coherence Tomography: Temporal Speckle Synchronization Effects
      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 speckle intensities with time may be used to distinguish between different tissue types, thus providing a novel and potentially useful contrast for OCT imaging. The developed methodology is tested in scattering flow phantoms, and in vivo on cervical cancer tumour grown ...
      Read Full Article
    5. Photodynamic opening of the blood-brain barrier and pathways of brain clearing

      Photodynamic opening of the blood-brain barrier and pathways of brain clearing
      A new application of the photodynamic treatment (PDT) is presented for the opening of blood-brain barrier (BBB) and the brain clearing activation that is associated with it, including the use of gold nanoparticles as emerging photosensitizer carriers in PDT. The obtained results clearly demonstrate two pathways for the brain clearing: 1) using PDT-opening of BBB and intravenous injection of FITC-dextran we showed a clearance of this tracer via the meningeal ...
      Read Full Article
    6. Monitoring of temperature-mediated phase transitions of adipose tissue by combined optical coherence tomography and Abbe refractometry

      Monitoring of temperature-mediated phase transitions of adipose tissue by combined optical coherence tomography and Abbe refractometry
      Observation of temperature-mediated phase transitions between lipid components of the adipose tissues has been performed by combined use of the Abbe refractometry and optical coherence tomography. The phase transitions of the lipid components were clearly observed in the range of temperatures from 24C to 60C, and assessed by quantitatively monitoring the changes of the refractive index of 1- to 2-mm-thick porcine fat tissue slices. The developed approach has a great ...
      Read Full Article
    7. Application of optical coherence tomography for in vivo monitoring of the meningeal lymphatic vessels during opening of blood–brain barrier: mechanisms of brain clearing

      Application of optical coherence tomography for in vivo monitoring of the meningeal lymphatic vessels during opening of blood–brain barrier: mechanisms of brain clearing
      The meningeal lymphatic vessels were discovered 2 years ago as the drainage system involved in the mechanisms underlying the clearance of waste products from the brain. The bloodbrain barrier (BBB) is a gatekeeper that strongly controls the movement of different molecules from the blood into the brain. We know the scenarios during the opening of the BBB, but there is extremely limited information on how the brain clears the substances ...
      Read Full Article
    8. Collaborative effects of wavefront shaping and optical clearing agent in optical coherence tomography

      Collaborative effects of wavefront shaping and optical clearing agent in optical coherence tomography
      Developing a deep-tissue imaging tool with good optical resolution is one of the important goals of biophotonics because medical diagnosis usually requires imaging of fine details of whole tissue structures. Optical coherence tomography (OCT) is an extensively developed imaging tool for biological tissues. Based on low-coherence interferometry, OCT provides micrometer scale resolution and enables non-invasive high-speed imaging1 . OCT is widely used in ophthalmology because it can fully access retina, choroid ...
      Read Full Article
    9. Imaging of subchondral bone by optical coherence tomography upon optical clearing of articular cartilage

      Imaging of subchondral bone by optical coherence tomography upon optical clearing of articular cartilage
      Optical clearing is an effective method to reduce light scattering of biological tissues that provides significant enhancement of light penetration into the biological tissues making non-invasive diagnosis more feasible. In current report Optical Coherence Tomography (OCT) in conjunction with optical clearing is applied for assessment of deep cartilage layers and cartilage-bone interface. The solution of Iohexol in water has been used as an optical clearing agent. The cartilage-bone boundary becomes ...
      Read Full Article
    10. OCT/LCT monitoring the drug effect on the human cornea structure in vivo

      OCT/LCT	monitoring	the	drug 	effect	on	the	human	cornea	 structure	in	vivo
      The effect of anti-glaucoma drugs on the structure components of human eye cornea are studied. The eye drops Timolol-AKOS 0.5% and Kosopt were used as the object of study. 10 voluntary patients of the Eye Disease Clinic aged from 70 to 75 suffering from glaucoma took part in the studies. The study of cornea in vivo was carried out using the methods of laser scanning confocal tomography (LCT) and ...
      Read Full Article
    11. Line-scan Raman microscopy complements optical coherence tomography for tumor boundary detection

      Line-scan Raman microscopy complements optical coherence tomography for tumor boundary detection
      Current technique for tumor resection requires biopsy of the tumor region and histological confirmation before the surgeon can be certain that the entire tumor has been resected. This confirmation process is time consuming both for the surgeon and the patient and also requires sacrifice of healthy tissue, motivating the development of novel technologies which can enable real-time detection of tumor-healthy tissue boundary for faster and more efficient surgeries. In this ...
      Read Full Article
    12. Optical imaging of intracranial hemorrhages in newborns: modern strategies in diagnostics and direction for future research

      Optical imaging of intracranial hemorrhages in newborns: modern strategies in diagnostics and direction for future research
      Using Doppler optical coherence tomography (DOCT) we study stress-related intracranial hemorrhages (ICHs) in newborn rats. We investigate a masked stage of ICH development that corresponds to the first 4 h after the stress. We show that this period is characterized by significant changes in the diameter of the sagittal vein and the velocity of the cerebral venous blood flow (CVBF). We discuss diagnostic abilities of wavelet-based methods and consider an ...
      Read Full Article
    13. Diffusing low-coherence interferometry of turbid media: an approach to transport parameters evaluation

      Diffusing low-coherence interferometry of turbid media: an approach to transport parameters evaluation
      The features of formation of interferometer output in the case of a broadband light source and random medium as a retro-reflector in the interferometer object arm are considered. It is shown for the large values of the pathlength difference the interferometer output decays exponentially with the decay rate dependent on the transport parameters of a probed random medium. This allows us to determine the transport mean free path of light ...
      Read Full Article
    14. 1-15 of 66 1 2 3 4 5 »
  1. Categories

    1. Applications:

      Art, Cardiology, Dentistry, Dermatology, Developmental Biology, Gastroenterology, Gynecology, Microscopy, NDE/NDT, Neurology, Oncology, Ophthalmology, Other Non-Medical, Otolaryngology, Pulmonology, Urology
    2. Business News:

      Acquisition, Clinical Trials, Funding, Other Business News, Partnership, Patents
    3. Technology:

      Broadband Sources, Probes, Tunable Sources
    4. Miscellaneous:

      Jobs & Studentships, Student Theses, Textbooks
  2. About Saratov State University

    Saratov State University

    Saratov State University is one of the oldest Higher Educational Institutions in Russia with rich history. It was founded on December 6, 1909 as the Imperial Saratov University & has been developing dynamically ever since that day. New departments were set up & new buildings were constructed which added to the SSU growth and development. Currently SSU is one of the biggest educational, scientific and cultural centers in Russia. As a result of 1998 integration process, several new institutions became parts of SSU structure.