1. Alireza A. Moayed

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    1. Mentioned In 14 Articles

    2. Automatic tracking of pupillary dynamics from in vivo functional optical coherence tomography images

      Automatic tracking of pupillary dynamics from in vivo functional optical coherence tomography images
      A major challenge currently faced in measuring visually evoked optical changes in different retinal layers using in vivo and non-invasive functional optical coherence tomography (fOCT) is the need for pupillary dilation drugs to enable reliable measurement of the retinal functional responses. However, there are situations where the use of pupillary dilation drugs is not suitable in both clinical and animal ophthalmic research situations. To overcome this challenge, we propose a ...
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    3. Noninvasive imaging of the early effect of sodium iodate toxicity in a rat model of outer retina degeneration with spectral domain optical coherence tomography

      Noninvasive imaging of the early effect of sodium iodate toxicity in a rat model of outer retina degeneration with spectral domain optical coherence tomography
      ...etina degeneration induced by NaIO3 toxicity. Sepideh Hariri ; Man Chun Tam ; Donghyun Lee ; Denise Hileeto ; Alireza Akhlagh Moayed, et al. "Noninvasive imaging of the early effect of sodium iodate toxicity in a rat mod...
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    4. Stimulus-Specific Pupil Dynamics Measured in Birds (Gallus gallus domesticus) In Vivo with Ultrahigh Resolution Optical Coherence Tomography

      Stimulus-Specific Pupil Dynamics Measured in Birds (Gallus gallus domesticus) In Vivo with Ultrahigh Resolution Optical Coherence Tomography
      Purpose. To demonstrate the ability of high speed, ultrahigh-resolution optical coherence tomography (UHR-OCT) to measure and characterize in vivo visual stimulus-specific pupil dynamics in birds. Methods. Ten two-week old White Leghorn ( Gallus gallus domesticus ) chickens were imaged in this study. The chickens were dark-adapted for 1 hour and anesthetized with 2% isoflurane prior to the imaging procedure. Blue, green, and red single flash visual stimuli of 7 ms duration were ...
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    5. In vivo Assessment of Thickness and Reflectivity in a Rat Outer Retinal Degeneration Model with Ultrahigh Resolution Optical Coherence Tomography

      In vivo Assessment of Thickness and Reflectivity in a Rat Outer Retinal Degeneration Model with Ultrahigh Resolution Optical Coherence Tomography
      Purpose: To provide in vivo quantitative assessment of sodium iodate-induced retinal damage in a rat model of outer retina degeneration using ultrahigh resolution optical coherence tomography (UHR-OCT). Methods: Outer retinal degeneration was induced in 4 female Long Evans rats via tail vein injection of sodium iodate (40 mg/kg). Changes in the thickness and optical reflectivity of individual retinal layers were extracted using a semi-automatic segmentation algorithm and were assessed ...
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    6. Correlation of visually evoked intrinsic optical signals and electroretinograms recorded from chicken retina with a combined functional optical coherence tomography and electroretinography system

      Correlation of visually evoked intrinsic optical signals and electroretinograms recorded from chicken retina with a combined functional optical coherence tomography and electroretinography system
      Visually evoked fast intrinsic optical signals (IOSs) were recorded for the first time in vivo from all layers of healthy chicken retina by using a combined functional optical coherence tomography (fOCT) and electroretinography (ERG) system. The fast IOSs were observed to develop within ∼ 5  ms from the on-set of the visual stimulus, whereas slow IOSs were measured up to 1 s later. The visually evoked IOSs and ERG traces were ...
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    7. Combined optical coherence tomography and electroretinography system for in vivo simultaneous morphological and functional imaging of the rodent retina

      Combined optical coherence tomography and electroretinography system for in vivo simultaneous morphological and functional imaging of the rodent retina
      .... Biomed. Opt., Vol. 15, 040506 (2010); doi:10.1117/1.3475489 Published 4 August 2010 ABSTRACT REFERENCES (8) Alireza Akhlagh Moayed,^1 Sepideh Hariri,^1 Chulho Hyun,^1 Bruce Doran,^2 Timothy W. Kraft,^3 Shelley Boyd...
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    8. Swelling of the Human Cornea Revealed by High Speed, Ultrahigh Resolution Optical Coherence Tomography

      Swelling of the Human Cornea Revealed by High Speed, Ultrahigh Resolution Optical Coherence Tomography
      Purpose: To evaluate the change in thickness of the anterior, stromal and posterior corneal laminae in response to hypoxia induced corneal swelling using ultra-high resolution optical coherence tomography (UHR-OCT). Methods: An UHR-OCT system, operating in the 1060nm range, was used to acquire in vivo cross-sectional images of human cornea with 3.2m x 10m (axial x lateral) resolution in corneal tissue. Corneal edema was induced by inserting a thick, positive ...
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    9. Limiting factors to the OCT axial resolution
for in-vivo imaging of human and rodent retina in the 1060nm wavelength range

      Limiting factors to the OCT axial resolution
for in-vivo imaging of human and rodent retina in the 1060nm wavelength range
      ...ics and biotechnology : Optical coherence tomography ToC Category: Category Pending Citation Sepideh Hariri, Alireza A. Moayed, Aphrodite Dracopolos, Chulho Hyun, Shelley Boyd, and Kostadinka Bizheva, "Limiting factors ...
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    10. Modelling the optical response of human retinal photoreceptors to plane wave illumination with the finite integration technique

      The early stages of ocular diseases such as Diabetic Retinopathy are manifested by morphological changes in retinal tissue occurring on cellular level. Therefore, a number of ophthalmic diseases can be diagnosed at an early stage by detecting spatial and temporal variations in the scattering profile ... [Proc. SPIE 7168, 71680H (2009)] published Tue Feb 24, 2009.
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    11. The broadest spectral bandwidth suitable for in-vivo UHROCT imaging of human and animal retina at 1060nm

      A computational model for an "ideal" light source for in-vivo UHROCT imaging of human and animal retina is presented. The model considers parameters such as the wavelength dependent absorption of water, the length of the human or animal eye, the power limitations for the imaging beam as defined in the ANSI standard, etc., to determinethe broadest possible spectral bandwidth that can result in the best axial OCT resolution in the ...
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    12. 1-14 of 14
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  2. About Alireza A. Moayed

    Alireza Akhlagh Moayed is a student at the University of Waterloo in Canada.