1. Roshan Dsouza

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    1. Mentioned In 17 Articles

    2. Feasibility study of phase-sensitive imaging based on multiple reference optical coherence tomography

      Explore OSA | OSA Publishing
      Feasibility study of phase-sensitive imaging based on multiple reference optical coherence tomography
      Multiple reference optical coherence tomography (MR-OCT) is a recently developed, low-cost and compact time-domain OCT solution for primary care and consumer level applications. A combination of a voice coil actuator and a partial mirror (PM) extends the scan range for imaging depths of approximately 1 mm in biological samples. Our previous research on MR-OCT is based only on intensity information obtained from the depth-resolved interference signal. In this Letter, we ...
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      Mentions: Hrebesh M. Subhash Martin J. Leahy National University of Ireland, Galway

    3. Comparing an FFT filter for multiple reference optical coherence tomography (MR-OCT) with an Chebychev and an elliptic filter

      Explore Conference Proceedings
      Comparing an FFT filter for multiple reference optical coherence tomography (MR-OCT) with an Chebychev and an elliptic filter
      Portable and low-cost optical coherence tomography (OCT) is increasingly used to improve the accuracy of point-of-care applications. The increasing research efforts to use photonics integrated circuits (PIC) is without doubts the future for highest packaging densities in miniature optical systems. MR-OCT is another technology that is using the advantages of well known CD/DVD-ROM technology to build miniaturized and low-cost OCT systems and may be more readily available before PICs ...
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      Mentions: Hrebesh M. Subhash Martin J. Leahy National University of Ireland, Galway

    4. Development of a first-generation miniature multiple reference optical coherence tomography imaging device

      Explore SPIE | Journal
      Development of a first-generation miniature multiple reference optical coherence tomography imaging device
      Multiple reference optical coherence tomography (MR-OCT) is a technology ideally suited to low-cost, compact OCT imaging. This modality is an extension of time-domain OCT with the addition of a partial mirror in front of the reference mirror. This enables extended, simultaneous depth scanning with the relatively short scan range of a miniature voice coil motor on which the scanning mirror is mounted. This work details early stage development of the ...
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      Mentions: Martin J. Leahy National University of Ireland, Galway Compact Imaging, Inc

    5. The how and why of a $10 optical coherence tomography system

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      The how and why of a $10 optical coherence tomography system
      Optical Coherence Tomography (OCT) is the fastest growing medical imaging modality with more than $1Bln worth of scans ordered and over $400M worth of equipment shipped in 2010, just nine years after its commercialization. It is at various stages of acceptance and approvals for eye care, coronary care and skin cancer care and is spreading rapidly to other medical specialties. Indeed, it is the leading success of translation of biophotonics ...
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      Mentions: Hrebesh M. Subhash Martin J. Leahy National University of Ireland, Galway

    6. Evaluation of a polarization sensitive multiple reference optical coherence tomography system

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      Evaluation of a polarization sensitive multiple reference optical coherence tomography system
      Multiple reference optical coherence tomography (MR-OCT) is a new compact optical sensor platform based on a small form factor recirculating reference arm scanning optical delay, which promises a robust, cost-effective semisolid state design for integration with next generation mobile devices. The miniature re-circulating optical delay is based on a voice coil motor (VCM) actuator and a partial mirror. Imaging capability of MR-OCT has been recently demonstrated using a non-polarizing bulk ...
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      Mentions: Martin J. Leahy National University of Ireland, Galway Compact Imaging, Inc

    7. The impact of relative intensity noise on the signal in multiple reference optical coherence tomography

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      The impact of relative intensity noise on the signal in multiple reference optical coherence tomography
      Multiple reference optical coherence tomography (MR-OCT) applies a unique low-cost solution to enhance the scanning depth of standard time domain OCT by inserting an partial mirror into the reference arm of the interferometric system. This novel approach achieves multiple reflections for different layers and depths of an sample with minimal effort of engineering and provides an excellent platform for low-cost OCT systems based on well understood production methods for micro-mechanical ...
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      Mentions: Hrebesh M. Subhash Martin J. Leahy National University of Ireland, Galway

    8. Assessment of curing behavior of light-activated dental composites using intensity correlation based multiple reference optical coherence tomography

      Explore Wiley Online Library Dentistry
      Assessment of curing behavior of light-activated dental composites using intensity correlation based multiple reference optical coherence tomography
      Background and Objectives Monitoring the curing kinetics of light-activated resin is a key area of research. These resins are used in restorative applications and particularly in dental applications. They can undergo volumetric shrinkage due to poor control of the depth dependent curing process, modulated by the intensity and duration of the curing light source. This often results in the formation of marginal gaps, causing pain and damage to the restoration ...
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      Mentions: Hrebesh M. Subhash Martin J. Leahy National University of Ireland, Galway

    9. 3D nondestructive testing system with an affordable multiple reference optical-delay-based optical coherence tomography

      Explore OSA | OSA Publishing NDE/NDT
      3D nondestructive testing system with an affordable multiple reference optical-delay-based optical coherence tomography
      ... Independence Ave., Suite 5B, Mountain View, California 94043, USA *Corresponding author: hrebeshms@gmail.com Roshan Dsouza, Hrebesh M. Subhash, Kai Neuhaus, Josh Hogan, Carol Wilson, and Martin Leahy, "3D nondestructive...
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      Mentions: Hrebesh M. Subhash Martin J. Leahy National University of Ireland, Galway

    10. Characterization of light distribution and optimization of detector position for multiple reference optical coherence tomography

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      Characterization of light distribution and optimization of detector position for multiple reference optical coherence tomography
      ...eers (SPIE). Downloading of the abstract is permitted for personal use only. Kai Neuhaus ; Hrebesh Subhash ; Roshan Dsouza ; Josh Hogan ; Carol Wilson ; Martin Leahy; Characterization of light distribution and optimizat...
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      Mentions: Hrebesh M. Subhash Martin J. Leahy National University of Ireland, Galway

    16. Feature Of The Week 5/19/13: Using Optical Coherence Tomography For Anti-Spoof Fingerprint Detection

      Explore Optical Coherence Tomography News Other Non-Medical
      Feature Of The Week 5/19/13: Using Optical Coherence Tomography For Anti-Spoof Fingerprint Detection
      Fingerprint biometrics, including automated fingerprint identification systems (AFIS), currently occupy two-thirds of the biometric market and are expected to remain the dominant player in this area. The technology can be integrated into small, compact devices and the instruments are relatively fast. However, the overall success of using fingerprints for identification and verification purposes greatly depends upon the quality of the fingerprints initially enrolled. For example, fingerprints captured from older people ...
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      Mentions: Kirill V. Larin University of Houston Hrebesh M. Subhash

    17. Feasibility of correlation mapping optical coherence tomography (cmOCT) for anti-spoof sub-surface fingerprinting

      Explore Wiley Online Library Dermatology , Other Non-Medical
      Feasibility of correlation mapping optical coherence tomography (cmOCT) for anti-spoof sub-surface fingerprinting
      We propose the use of correlation mapping optical coherence tomography (cmOCT) to deliver additional biometrics associated with the finger that could complement existing fingerprint technology for law enforcement applications. The current study extends the existing fingerprint paradigm by measuring additional biometrics associated with sub-surface finger tissue such as sub-surface fingerprints, sweat glands, and the pattern of the capillary bed to yield a user-friendly cost effective and anti-spoof multi-mode biometric solution ...
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      Mentions: Kirill V. Larin University of Houston Hrebesh M. Subhash
    19. 1-17 of 17
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  4. About Roshan Dsouza

    Roshan Dsouza

    Roshan Dsouza received his MSc degree in Photonics from Manipal University, India in 2011. His masters project work at Raja Ramanna Centre for Advanced Technology concerned the “Development of   Free Space Combined Optical Coherence Tomography (OCT) – Laser Induced Fluorescence (LIF) System”. He has been awarded the College of Science Fellowship from NUI Galway in September 2011.His current work involves correlation mapping OCT (cmOCT) imaging of the microcirculation and multiple reference OCT - a Compact Imaging project.

  5. Related Topics

    1. In vivo microcirculation imaging of the sub surface fingertip using correlation mapping optical coherence tomography (cmOCT)
      17 articles also mentioned Martin J. Leahy
    2. Feasibility of correlation mapping optical coherence tomography (cmOCT) for anti-spoof sub-surface fingerprinting
      16 articles also mentioned National University of Ireland, Galway
    3. MR-OCT: Affordable Tomographic Imaging Applications
      8 articles also mentioned Compact Imaging, Inc
    4. Assessment of curing behavior of light-activated dental composites using intensity correlation based multiple reference optical coherence tomography
      6 articles also mentioned Paul M. McNamara