1. University of Houston

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    1. Mentioned In 199 Articles

    2. Assessing the biomechanical properties of the porcine crystalline lens as a function of intraocular pressure with optical coherence elastography

      Explore OSA | OSA Publishing Ophthalmology
      Assessing the biomechanical properties of the porcine crystalline lens as a function of intraocular pressure with optical coherence elastography
      In this study, we investigated the relationship between the biomechanical properties of the crystalline lens and intraocular pressure (IOP) using a confocal acoustic radiation force (ARF) and phase-sensitive optical coherence elastography (OCE) system. ARF induced a small displacement at the apex of porcine lenses in situ at various artificially controlled IOPs. Maximum displacement, relaxation rate, and Youngs modulus were utilized to assess the stiffness of the crystalline lens. The results ...
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      Mentions: Baylor College of Medicine Kirill V. Larin University of Houston

    3. Understanding congenital heart defects to prevent them

      Explore EurekAlert! Cardiology , Developmental Biology
      Understanding congenital heart defects to prevent them
      To understand cardiovascular failures, the leading cause of birth defect-related deaths in infants, UH professor of biomedical engineering Kirill Larin is teaming up with Baylor College of Medicine professor of cellular and molecular physiology Irina Larina on a chicken and egg hunt. "When the heart develops, it becomes stiffer as required for ability to contract and pump blood," said Larin. "So the question is - does it become stiff because it ...
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      Mentions: National Institutes of Health Baylor College of Medicine Kirill V. Larin

    4. Integrated optical coherence tomography and multielement ultrasound transducer probe for shear wave elasticity imaging of moving tissues

      Explore SPIE Digital Library Probes
      Integrated optical coherence tomography and multielement ultrasound transducer probe for shear wave elasticity imaging of moving tissues
      Accurate measurements of microelastic properties of soft tissues in-vivo using optical coherence elastography can be affected by motion artifacts caused by cardiac and respiratory cycles. This problem can be overcome using a multielement ultrasound transducer probe where each ultrasound transducer is capable of generating acoustic radiation force (ARF) and, therefore, creating shear waves in tissue. These shear waves, produced during the phase of cardiac and respiratory cycles when tissues are ...
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      Mentions: Kirill V. Larin University of Houston Georgia Institute of Technology

    6. Modified wavelength scanning interferometry for simultaneous tomography and topography of the cornea with Fourier domain optical coherence tomography

      Explore OSA | OSA Publishing Ophthalmology
      Modified wavelength scanning interferometry for simultaneous tomography and topography of the cornea with Fourier domain optical coherence tomography
      Visual acuity is dependent on corneal shape and size. A minor variation in surface geometry can cause a deformation of corneal geometry, which affects its optical performance. In this work we demonstrate an algorithm for the simultaneous measurement of corneal tomography and topography with a traditional point-scanning Fourier domain optical coherence tomography (FD-OCT) system. A modified wavelength scanning interferometry (mWSI) algorithm enabled topographical evaluation of the surface with nanometer-scale resolution ...
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      Mentions: Baylor College of Medicine Kirill V. Larin University of Alabama

    8. Effects of Thickness on Corneal Biomechanical Properties Using Optical Coherence Elastography

      Explore LWW Online Ophthalmology
      Effects of Thickness on Corneal Biomechanical Properties Using Optical Coherence Elastography
      SIGNIFICANCE Measured corneal biomechanical properties are driven by intraocular pressure, tissue thickness, and inherent material properties. We demonstrate tissue thickness as an important factor in the measurement of corneal biomechanics that can confound short-term effects due to UV riboflavin cross-linking (CXL) treatment. PURPOSE We isolate the effects of tissue thickness on the measured corneal biomechanical properties using optical coherence elastography by experimentally altering the tissue hydration state and stiffness. METHODS ...
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      Mentions: Kirill V. Larin University of Houston Salavat Aglyamov

    10. Quantifying changes in lens biomechanical properties due to cold cataract with optical coherence elastography

      Explore SPIE Digital Library Ophthalmology
      Quantifying changes in lens biomechanical properties due to cold cataract with optical coherence elastography
      Cataract is the most prevalent cause of visual impairment worldwide. Cataracts can be formed due to trauma, radiation, drug abuse, or low temperatures. Thus, early detection of cataract can be immensely helpful for preserving visual acuity by ensuring that the appropriate therapeutic procedures are performed at earlier stages of disease onset and progression. In this work, we utilized a phase-sensitive optical coherence elastography (OCE) system to quantify changes in biomechanical ...
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      Mentions: Kirill V. Larin University of Houston Manmohan Singh

    14. Biomechanical assessment of myocardial infarction using optical coherence elastography

      Explore OSA | OSA Publishing Cardiology , Developmental Biology
      Biomechanical assessment of myocardial infarction using optical coherence elastography
      Myocardial infarction (MI) leads to cardiomyocyte loss, impaired cardiac function, and heart failure. Molecular genetic analyses of myocardium in mouse models of ischemic heart disease have provided great insight into the mechanisms of heart regeneration, which is promising for novel therapies after MI. Although biomechanical factors are considered an important aspect in cardiomyocyte proliferation, there are limited methods for mechanical assessment of the heart in the mouse MI model. This ...
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      Mentions: Baylor College of Medicine Kirill V. Larin University of Houston

    15. Evaluating the Effects of Maternal Alcohol Consumption on Murine Fetal Brain Vasculature Using Optical Coherence Tomography

      Explore Wiley Online Library Developmental Biology , Neurology
      Evaluating the Effects of Maternal Alcohol Consumption on Murine Fetal Brain Vasculature Using Optical Coherence Tomography
      Prenatal alcohol exposure (PAE) can result in a range of anomalies including brain and behavioral dysfunctions, collectively termed fetal alcohol spectrum disorder (FASD). PAE during the 1 st and 2 nd trimester is common, and research in animal models has documented significant neural developmental deficits associated with PAE during this period. However, little is known about the immediate effects of PAE on fetal brain vasculature. In this study, we used ...
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      Mentions: Kirill V. Larin University of Houston Manmohan Singh

    16. Common-path phase-sensitive optical coherence tomography provides enhanced phase stability and detection sensitivity for dynamic elastography

      Explore OSA | OSA Publishing
      Common-path phase-sensitive optical coherence tomography provides enhanced phase stability and detection sensitivity for dynamic elastography
      Phase-sensitive optical coherence elastography (PhS-OCE) is an emerging optical technique to quantify soft-tissue biomechanical properties. We implemented a common-path OCT design to enhance displacement sensitivity and optical phase stability for dynamic elastography imaging. The background phase stability was greater in common-path PhS-OCE (0.24 0.07nm) than conventional PhS-OCE (1.60 0.11m). The coefficient of variation for surface displacement measurements using conventional PhS-OCE averaged 11% versus 2% for common-path ...
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      Mentions: Kirill V. Larin University of Alabama University of Houston
    17. 1-15 of 199 1 2 3 4 ... 12 13 14 »
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  4. About University of Houston

    University of Houston

    University of Houston is a public doctoral/research university located in Houston, Texas. It is the flagship institution and the only doctoral degree-granting university in the University of Houston System, which includes three other universities and two multi-institution teaching centers.  Biomedical Optics Laboratory at the University of Houston is located within the Biomedical Engineering and Mechanical Enginnering Department at the University of Houston (UH). The research activities of the laboratory, under the direction of Dr. Kirill Larin, concern the development of new methods for protein biosensing (based on nanooptics) and tissue functional imaging (based on Optical Coherence Tomography).

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