1. Kirill V. Larin

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    1. Mentioned In 143 Articles

    2. The University of Houston Receives NIH Grant for Optical Coherence Tomography to Study Effect of Poly-Drug Exposure on Fetal Brain Development

      The University of Houston Receives NIH Grant for Optical Coherence Tomography to Study Effect of Poly-Drug Exposure on Fetal Brain Development
      The University of Houston Receives a 2017 NIH Grant for $311,241 for Optical Coherence Tomography to Study Effect of Poly-Drug Exposure on Fetal Brain Development. The principal investigator is Kirll Larin. The program began in 2016 and ends in 2020. Below is a summary of the proposed work. The overall objective of this study is to develop an optical coherence tomography (OCT) based high- resolution mouse embryonic brain imaging ...
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    3. Dynamic imaging and quantitative analysis of cranial neural tube closure in the mouse embryo using optical coherence tomography

      Dynamic imaging and quantitative analysis of cranial neural tube closure in the mouse embryo using optical coherence tomography
      Neural tube closure is a critical feature of central nervous system morphogenesis during embryonic development. Failure of this process leads to neural tube defects, one of the most common forms of human congenital defects. Although molecular and genetic studies in model organisms have provided insights into the genes and proteins that are required for normal neural tube development, complications associated with live imaging of neural tube closure in mammals limit ...
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    4. Assessing the effects of riboflavin/UV-A crosslinking on porcine corneal mechanical anisotropy with optical coherence elastography

      Assessing the effects of riboflavin/UV-A crosslinking on porcine corneal mechanical anisotropy with optical coherence elastography
      In this work we utilize optical coherence elastography (OCE) to assess the effects of UV-A/riboflavin corneal collagen crosslinking (CXL) on the mechanical anisotropy of in situ porcine corneas at various intraocular pressures (IOP). There was a distinct meridian of increased Youngs modulus in all samples, and the mechanical anisotropy increased as a function of IOP and also after CXL. The presented noncontact OCE technique was able to quantify the ...
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    5. Optical Modalities for Embryonic Imaging

      Optical Modalities for Embryonic Imaging
      tudies of disease etiology often rely on the murine (mouse) model, which provides valuable genotypic information. Yet associated phenotypic information from murine embryos is often lacking. Of the various techniques that have been proposed for imaging such embryos, optical modalities may provide the best compromise among speed, penetration depth and resolution. This year, we developed approaches to improve embryonic imaging with optical coherence tomography (OCT), 1 and also provided a ...
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    6. Optical coherence elastography assessment of corneal viscoelasticity with a modified Rayleigh-Lamb wave model

      Optical coherence elastography assessment of corneal viscoelasticity with a modified Rayleigh-Lamb wave model
      The biomechanical properties of the cornea play a critical role in forming vision. Diseases such as keratoconus can structurally degenerate the cornea causing a pathological loss in visual acuity. UV-A/riboflavin corneal collagen crosslinking (CXL) is a clinically available treatment to stiffen the cornea and restore its healthy shape and function. However, current CXL techniques do not account for pre-existing biomechanical properties of the cornea nor the effects of the ...
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    7. Quantifying tissue viscoelasticity using optical coherence elastography and the Rayleigh wave model

      Quantifying tissue viscoelasticity using optical coherence elastography and the Rayleigh wave model
      This study demonstrates the feasibility of using the Rayleigh wave model (RWM) in combination with optical coherence elastography (OCE) technique to assess the viscoelasticity of soft tissues. Dispersion curves calculated from the spectral decomposition of OCE-measured air-pulse induced elastic waves were used to quantify the viscoelasticity of samples using the RWM. Validation studies were first conducted on 10% gelatin phantoms with different concentrations of oil. The results showed that the ...
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    8. Investigating Elastic Anisotropy of the Porcine Cornea as a Function of Intraocular Pressure With Optical Coherence Elastography

      Investigating Elastic Anisotropy of the Porcine Cornea as a Function of Intraocular Pressure With Optical Coherence Elastography
      PURPOSE: To evaluate the elastic anisotropy of porcine corneas at different intraocular pressures (IOPs) using a noncontact optical coherence elastography (OCE) technique. METHODS: A focused air-pulse induced low amplitude ( 10 m) elastic waves in fresh porcine corneas (n = 7) in situ in the whole eye globe configuration. A home-built phase-stabilized swept source optical coherence elastography (PhS-SSOCE) system imaged the elastic wave propagation at different stepped radial directions. A closed-loop feedback ...
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    9. Evaluating the Effects of Riboflavin/UV-A and Rose-Bengal/Green Light Cross-Linking of the Rabbit Cornea by Noncontact Optical Coherence Elastography

      Evaluating the Effects of Riboflavin/UV-A and Rose-Bengal/Green Light Cross-Linking of the Rabbit Cornea by Noncontact Optical Coherence Elastography
      Purpose : The purpose of this study was to use noncontact optical coherence elastography (OCE) to evaluate and compare changes in biomechanical properties that occurred in rabbit cornea in situ after corneal collagen cross-linking by either of two techniques: ultraviolet-A (UV-A)/riboflavin or rose-Bengal/green light. Methods : Low-amplitude (10 m) elastic waves were induced in mature rabbit corneas by a focused air pulse. Elastic wave propagation was imaged by a phase-stabilized ...
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    10. Live four-dimensional optical coherence tomography reveals embryonic cardiac phenotype in mouse mutant

      Live four-dimensional optical coherence tomography reveals embryonic cardiac phenotype in mouse mutant
      Efficient phenotyping of developmental defects in model organisms is critical for understanding the genetic specification of normal development and congenital abnormalities in humans. We previously reported that optical coherence tomography (OCT) combined with live embryo culture is a valuable tool for mouse embryo imaging and four-dimensional (4-D) cardiodynamic analysis; however, its capability for analysis of mouse mutants with cardiac phenotypes has not been previously explored. Here, we report 4-D (three-dimensional ...
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    11. Optical coherence tomography for embryonic imaging: a review

      Optical coherence tomography for embryonic imaging: a review
      Embryogenesis is a highly complex and dynamic process, and its visualization is crucial for understanding basic physiological processes during development and for identifying and assessing possible defects, malformations, and diseases. While traditional imaging modalities, such as ultrasound biomicroscopy, micro-magnetic resonance imaging, and micro-computed tomography, have long been adapted for embryonic imaging, these techniques generally have limitations in their speed, spatial resolution, and contrast to capture processes such as cardiodynamics during ...
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    12. Applicability, usability, and limitations of murine embryonic imaging with optical coherence tomography and optical projection tomography

      Applicability, usability, and limitations of murine embryonic imaging with optical coherence tomography and optical projection tomography
      ...4(4), 607–618 (2015). [CrossRef] [PubMed] C. Wu, N. Sudheendran, M. Singh, I. V. Larina, M. E. Dickinson, and K. V. Larin, “Rotational Imaging OCT for Full-Body Mouse Embryonic Imaging,” J. Biomed. Opt. 21, 026002 (2016)...
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    13. Rapid, noninvasive quantitation of skin disease in systemic sclerosis using optical coherence elastography

      Rapid, noninvasive quantitation of skin disease in systemic sclerosis using optical coherence elastography
      Systemic sclerosis (SSc) is a connective tissue disease that results in excessive accumulation of collagen in the skin and internal organs. Overall, SSc has a rare morbidity (276 cases per million adults in the United States), but has a 10-year survival rate of 55%. Currently, the modified Rodnan skin score (mRSS) is assessed by palpation on 17 sites on the body. However, the mRSS assessed score is subjective and may ...
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    14. Four-dimensional live imaging of hemodynamics in mammalian embryonic heart with Doppler optical coherence tomography

      Four-dimensional live imaging of hemodynamics in mammalian embryonic heart with Doppler optical coherence tomography
      Four-dimensional live hemodynamic imaging of the mouse embryonic heart at embryonic day 9.0 using Doppler optical coherence tomography, showing directional blood flows in the sinus venosus, primitive atrium, atrioventricular region and vitelline vein. Hemodynamic analysis of the mouse embryonic heart is essential for understanding the functional aspects of early cardiogenesis and advancing the research in congenital heart defects. However, high-resolution imaging of cardiac hemodynamics in mammalian models remains challenging ...
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  2. About Kirill V. Larin

    Kirill V. Larin

    Kirill V. Larin is Assistant Professor of Biomedical Engineering at the University of Houston, Houston, TX. His research interests focuses on development and application of OCT for noninvasive and nondestructive imaging and diagnostics of tissues and cells. Larin has authored more than 40 peer-reviewed journal publications and chapters in two textbooks on Biomedical Optics. He is recipient of Boris Yeltsin Presidential Award, Wallace Coulter Young Investigator Translation Award, Office of Naval Research Young Investigator Award, and Outstanding Young Investigator Award from the Houston Society for Engineers in Medicine and Biology.

  3. Quotes

    1. We are using OCT to image mouse and rat embryos, looking at video taken about seven days after conception, out of a 20-day typical mammalian pregnancy...this way, we are able to capture video of the embryonic heart before it begins beating, and a day later we can see the heart beginning to form in the shape of a tube and see whether or not the chambers are contracting. Then, we begin to see blood distribution and the heart rate.
      In The Embryonic Heart: Imaging Life as it Happens - University of Houston Professor Captures Video of Heart Before it Begins to Beat (Video Snippet)
    2. Our primary objective is to develop noninvasive, early detection methods to diagnose various diseases.
      In U. Houston professor expands Optics research