1. R. Daniel Ferguson

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    1. Mentioned In 35 Articles

    2. Combined reflectance confocal microscopy-optical coherence tomography system for imaging of biological tissue

      Combined reflectance confocal microscopy-optical coherence tomography system for imaging of biological tissue
      A dual-modality apparatus for imaging of biological tissue includes a reflectance confocal microscopy (RCM) imaging apparatus and an optical coherence tomography (OCT) imaging apparatus. A first optical component reflects a first beam of light provided by a RCM imaging apparatus towards a sample and passes a second beam of light provided by an OCT imaging apparatus towards the sample, such that the first and second beam of lights share at ...
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    3. Feature of the Week 03/20/2016: Closed Loop Tracked Doppler OCT Based Heart Monitor for the Drosophila Melanogaster Larvae

      Feature of the Week 03/20/2016: Closed Loop Tracked Doppler OCT Based Heart Monitor for the Drosophila Melanogaster Larvae
      A fruit fly larva (top) was continuously tracked for continuous remote monitoring. A heartbeat trace of freely moving larva (bottom) was obtained by a low coherence interferometry based doppler sensing technique. This paper presents a novel instrument for biosciences, useful for studies of moving embryos. A dual sequential imaging/measurement channel is assembled via a closed-loop tracking architecture. The dual channel system can operate in two regimes: (i) single-point Doppler ...
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    4. Investigation of middle ear anatomy and function with combined video otoscopy-phase sensitive OCT

      Investigation of middle ear anatomy and function with combined video otoscopy-phase sensitive OCT
      We report the development of a novel otoscopy probe for assessing middle ear anatomy and function. Video imaging and phase-sensitive optical coherence tomography are combined within the same optical path. A sound stimuli channel is incorporated as well to study middle ear function. Thus, besides visualizing the morphology of the middle ear, the vibration amplitude and frequency of the eardrum and ossicles are retrieved as well. Preliminary testing on cadaveric ...
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    5. IMAGING WITH MULTIMODAL ADAPTIVE-OPTICS OPTICAL COHERENCE TOMOGRAPHY IN MULTIPLE EVANESCENT WHITE DOT SYNDROME: THE STRUCTURE AND FUNCTIONAL RELATIONSHIP

      IMAGING WITH MULTIMODAL ADAPTIVE-OPTICS OPTICAL COHERENCE TOMOGRAPHY IN MULTIPLE EVANESCENT WHITE DOT SYNDROME: THE STRUCTURE AND FUNCTIONAL RELATIONSHIP
      Purpose: To elucidate the location of pathological changes in multiple evanescent white dot syndrome (MEWDS) with the use of multimodal adaptive optics (AO) imaging . Methods: A 5-year observational case study of a 24-year-old female with recurrent MEWDS. Full examination included history, Snellen chart visual acuity, pupil assessment, intraocular pressures, slit lamp evaluation, dilated fundoscopic exam, imaging with Fourier-domain optical coherence tomography (FD-OCT), blue-light fundus autofluorescence (FAF), fundus photography, fluorescein angiography ...
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    6. In Vivo Three-Dimensional Characterization of the Healthy Human Lamina Cribrosa with Adaptive Optics Spectral-Domain Optical Coherence Tomography

      In Vivo Three-Dimensional Characterization of the Healthy Human Lamina Cribrosa with Adaptive Optics Spectral-Domain Optical Coherence Tomography
      Purpose: To characterize the in vivo 3D lamina cribrosa (LC) microarchitecture of healthy eyes using adaptive optics spectral-domain optical coherence tomography (AO-SDOCT). Methods: One randomly selected eye from each of 18 healthy subjects was scanned with Cirrus HD-OCT and AO-SDOCT centered on the optic nerve head. LC microarchitecture, imaged by the later device, was semi-automatically segmented and quantified for connective tissue volume fraction (CTVF), beam thickness, pore diameter, pore area ...
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    7. Combined Reflectance Confocal Microscopy-Optical Coherence Tomography System for Imaging of Biological Tissue

      Combined Reflectance Confocal Microscopy-Optical Coherence Tomography System for Imaging of Biological Tissue
      A dual-modality apparatus for imaging of biological tissue includes a reflectance confocal microscopy (RCM) imaging apparatus and an optical coherence tomography (OCT) imaging apparatus. A first optical component reflects a first beam of light provided by a RCM imaging apparatus towards a sample and passes a second beam of light provided by an OCT imaging apparatus towards the sample, such that the first and second beam of lights share at ...
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    8. Multi-functional adaptive optics retinal imaging

      Multi-functional adaptive optics retinal imaging
      An optical apparatus includes a system of optical components capable of operating in a scanning laser ophthalmoscope (SLO) mode and an optical coherence tomography (OCT) mode. The system of optical components includes a first optical module for the SLO mode, a second optical module for the OCT mode, and a first scanning device. The first optical module for the SLO mode includes a first source adapted to provide a first ...
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    9. Repeatability of in vivo 3D lamina cribrosa microarchitecture using adaptive optics spectral domain optical coherence tomography

      Repeatability of in vivo 3D lamina cribrosa microarchitecture using adaptive optics spectral domain optical coherence tomography
      ...^* Jessica E. Nevins,^1 Hiroshi Ishikawa,^1,^2 Richard Bilonick,^1,^2 Larry Kagemann,^1,^2 Ian A. Sigal,^1,^2 R. Daniel Ferguson,^3 Ankit Patel,^3 Daniel X. Hammer,^4 and Joel S. Schuman^1,^2 ^1UPMC Eye Center, Eye and...
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    10. Automated lamina cribrosa microstructural segmentation in optical coherence tomography scans of healthy and glaucomatous eyes

      Automated lamina cribrosa microstructural segmentation in optical coherence tomography scans of healthy and glaucomatous eyes
      ...1,^2 Gadi Wollstein,^1,^* Jessica E. Nevins,^1 Hiroshi Ishikawa,^1,^2 Larry Kagemann,^1,^2 Ian A. Sigal,^1,^2 R. Daniel Ferguson,^3 Daniel X. Hammer,^4 Ireneusz Grulkowski,^5 Jonathan J. Liu,^5 Martin F. Kraus,^5,^6 Chen...
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    11. Accurate prediction of collapse temperature using optical coherence tomography-based freeze-drying microscopy

      Accurate prediction of collapse temperature using optical coherence tomography-based freeze-drying microscopy
      The objective of this study was to assess the feasibility of developing and applying a laboratory tool that can provide three-dimensional product structural information during freeze-drying and which can accurately characterize the collapse temperature ( T c ) of pharmaceutical formulations designed for freeze-drying. A single-vial freeze dryer coupled with optical coherence tomography freeze-drying microscopy (OCTFDM) was developed to investigate the structure and T c of formulations in pharmaceutically relevant products containers ...
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    12. Combined reflectance confocal microscopy/optical coherence tomography imaging for skin burn assessment

      Combined reflectance confocal microscopy/optical coherence tomography imaging for skin burn assessment
      A combined high-resolution reflectance confocal microscopy (RCM)/optical coherence tomography (OCT) instrument for assessing skin burn gravity has been built and tested. This instruments allows for visualizing skin intracellular details with submicron resolution in the RCM mode and morphological and birefringence modifications to depths on the order of 1.2 mm in the OCT mode. Preliminary testing of the dual modality imaging approach has been performed on the skin of ...
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    13. University of Rochester Receives NIH Grant for Adaptive Optics Instrumentation for Advanced Ophthalmic Imaging

      University of Rochester Receives NIH Grant for Adaptive Optics Instrumentation for Advanced Ophthalmic Imaging
      ...ity) who brings strong mathematical skills and software development tools for tracking the eye in AOSLOs, and R. Daniel Ferguson (Physical Sciences, Inc.) whose expertise is in the optical engineering of innovative eye t...
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    14. 1-15 of 35 1 2 3 »
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  2. About R. Daniel Ferguson

    R. Daniel Ferguson is with Physical Sciences, Incorporated in Andover Massachusetts.