1. Articles from Maria M. Karabut

    1-3 of 3
    1. Multimodal optical coherence tomography for in vivo imaging of brain tissue structure and microvascular network at glioblastoma

      Multimodal optical coherence tomography for in vivo imaging of brain tissue structure and microvascular network at glioblastoma

      In the case of infiltrative brain tumors the surgeon faces difficulties in determining their boundaries to achieve total resection. The aim of the investigation was to evaluate the performance of multimodal OCT (MM OCT) for differential diagnostics of normal brain tissue and glioma using an experimental model of glioblastoma. The spectral domain OCT device that was used for the study provides simultaneously two modes: cross-polarization and microangiographic OCT. The comparative analysis of the both OCT modalities images from tumorous and normal brain tissue areas concurrently with histologic correlation shows certain difference between when accordingly to morphological and microvascular tissue features.

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    2. Vessel-contrast enhancement in label-free optical coherence angiography based on phase and amplitude speckle variability

      Vessel-contrast enhancement in label-free optical coherence angiography based on phase and amplitude speckle variability

      Recently proposed in vivo label-free optical coherence angiography techniques based on phase and amplitude speckle variability often require additional signal pre- and post processing operations to enhance vessel-contrast. We observe here 1) contrast enhancement by optimizing the signal normalization/weighing before processing; 2) algorithm based on Kasai estimator for phase compensation between processed A-scans to reduce masking role of motion artifacts; and 3) image projection through the imaging depth for en face plotting. We demonstrate the efficiency of proposed additional algorithms as for the microcirculation imaging of hamsters cheek in vivo as for the preliminary microcirculation imaging of patients after ...

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    3. Feature Of The Week 3/13/11: Russian Scientists Investigate Cross Polarization OCT for Early Bladder Cancer Detection

      Feature Of The Week 3/13/11: Russian Scientists Investigate Cross Polarization OCT for Early Bladder Cancer Detection
      Feature Of The Week 3/13/11: This week OCT News has another exciting “Feature Of The Week” presentation of exciting scientific results on the use of co- and cross-polarization OCT information applied to early bladder cancer detection.  The work is from the prestigious Institute of Applied and Fundamental Medicine at the Nizhny Novgorod State Medical Academy and the Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia.  Please note the authors have some excellent animation techniques so go slowly when viewing the slides so the animation can complete.   Capabilities of Cross Polarization Optical Coherence Tomography ...
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    1-3 of 3
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  2. Topics in the News

    1. (3 articles) Institute of Applied Physics
    2. (3 articles) Nizhny Novgorod State Medical Academy
    3. (3 articles) Natalia D. Gladkova
    4. (3 articles) Maria M. Karabut
    5. (2 articles) Grigory V. Gelikonov
    6. (2 articles) Valentin M. Gelikonov
    7. (2 articles) Elena B. Kiseleva
    8. (1 articles) Elena V. Zagaynova
    9. (1 articles) Olga S. Streltsova
    10. (1 articles) Pavel A. Shilyagin
    11. (1 articles) Duke University
    12. (1 articles) Sina Farsiu
    13. (1 articles) PhotoniCare
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    Feature Of The Week 3/13/11: Russian Scientists Investigate Cross Polarization OCT for Early Bladder Cancer Detection Vessel-contrast enhancement in label-free optical coherence angiography based on phase and amplitude speckle variability Multimodal optical coherence tomography for in vivo imaging of brain tissue structure and microvascular network at glioblastoma Duke University Engineering Professor Sina Farsiu Elected Fellow of the IEEE PhotoniCare Takes First Place at the 2019 HealthTECH Startup Competition Close Assessment and Testing for Chronic Graft Versus Host Disease, CATCH Study GaAs-Based InPBi Quantum Dots for High Efficiency Super-Luminescence Diodes Pearls and Pitfalls of Optical Coherence Tomography Angiography Image Interpretation Novel optical coherence tomography findings in idiopathic choroidal folds Artificial Intelligence and Healthcare: Products and Procedures Oral Diagnosis Minimally Invasive Imaging Approaches (Textbook) Machine learning, imaging technique may boost colon cancer diagnosis