1. Ramona Cernat

    0 Comments Leave a Comment

    1-10 of 10
    1. Mentioned In 10 Articles

    2. Down-conversion en-face optical coherence tomography

      Down-conversion en-face optical coherence tomography
      We present an optical coherence tomography (OCT) method that can deliver an en-face OCT image from a sample in real-time, irrespective of the tuning speed of the swept source. The method, based on the master slave interferometry technique, implements a coherence gate principle by requiring that the optical path difference (OPD) between the arms of an imaging interferometer is the same with the OPD in an interrogating interferometer. In this ...
      Read Full Article
    3. Gabor fusion master slave optical coherence tomography

      Gabor fusion master slave optical coherence tomography
      This paper describes the application of the Gabor filtering protocol to a Master/Slave (MS) swept source optical coherence tomography (SS)-OCT system at 1300 nm. The MS-OCT system delivers information from selected depths, a property that allows operation similar to that of a time domain OCT system, where dynamic focusing is possible. The Gabor filtering processing following collection of multiple data from different focus positions is different from that ...
      Read Full Article
    4. Handheld scanning probes for optical coherence tomography: developments, applications, and perspectives

      Handheld scanning probes for optical coherence tomography: developments, applications, and perspectives
      We present the handheld scanning probes that we have recently developed in our current project for biomedical imaging in general and for Optical Coherence Tomography (OCT) in particular. OCT is an established, but dynamic imagistic technique based on laser interferometry, which offers micrometer resolutions and millimeters penetration depths. With regard to existing devices, the newly developed handheld probes are simple, light and relatively low cost. Their design is described in ...
      Read Full Article
    5. Feature Of The Week 10/5/14: Design and Testing of Handheld Scanning Probe Prototypes for Optical Coherence Tomography

      Feature Of The Week 10/5/14: Design and Testing of Handheld Scanning Probe Prototypes for Optical Coherence Tomography
      Three simple and low-cost configurations of handheld scanning probes for optical coherence tomography have been developed. Their design and testing for dentistry applications are presented. The first two configurations were built exclusively from available off-the-shelf optomechanical components, which, to the best of our knowledge, are the first designs of this type. The third configuration includes these components in an optimized and ergonomic probe. All the designs are presented in detail ...
      Read Full Article
    6. Design and testing of prototype handheld scanning probes for optical coherence tomography

      Design and testing of prototype handheld scanning probes for optical coherence tomography
      Three simple and low-cost configurations of handheld scanning probes for optical coherence tomography have been developed. Their design and testing for dentistry applications are presented. The first two configurations were built exclusively from available off-the-shelf optomechanical components, which, to the best of our knowledge, are the first designs of this type. The third configuration includes these components in an optimized and ergonomic probe. All the designs are presented in detail ...
      Read Full Article
    7. Spatial Compounding Algorithm for Speckle Reduction of Dynamic Focus OCT Images

      Spatial Compounding Algorithm for Speckle Reduction of Dynamic Focus OCT Images
      Optical coherence tomography is capable of imaging the microstructures within tissues. To preserve the transverse resolution at all imaging depths, we implement a dynamic focusing scheme. To improve the quality of images further, a simple speckle reduction scheme is employed which uses the vibration introduced by the translation stage used for axial scanning. A spatial compounding technique is developed based on co-registration followed by an averaging algorithm. We conclude that ...
      Read Full Article
    8. Dual instrument for in vivo and ex vivo OCT imaging in an ENT department

      Dual instrument for in vivo and ex vivo OCT imaging in an ENT department
      A dual instrument is assembled to investigate the usefulness of optical coherence tomography (OCT) imaging in an ear, nose and throat (ENT) department. Instrument 1 is dedicated to in vivo laryngeal investigation, based on an endoscope probe head assembled by compounding a miniature transversal flying spot scanning probe with a commercial fiber bundle endoscope. This dual probe head is used to implement a dual channel nasolaryngeal endoscopy-OCT system. The two ...
      Read Full Article
    9. Ex vivo optical coherence tomography imaging of larynx tissues using a forward-viewing resonant fiber-optic scanning endoscope

      Ex vivo optical coherence tomography imaging of larynx tissues using a forward-viewing resonant fiber-optic scanning endoscope
      A miniature endoscope probe for forward viewing in a 50 kHz swept source optical coherence tomography (SS-OCT) configuration was developed. The work presented here is an intermediate step in our research towards in vivo endoscopic laryngeal cancer screening. The endoscope probe consists of a miniature tubular lead zirconate titanate (PZT) actuator, a single mode fiber (SMF) cantilever and a GRIN lens, with a diameter of 2.4 mm. The outer ...
      Read Full Article
    10. 1-10 of 10
  1. Categories

    1. Applications:

      Art, Cardiology, Dentistry, Dermatology, Developmental Biology, Gastroenterology, Gynecology, Microscopy, NDE/NDT, Neurology, Oncology, Ophthalmology, Other Non-Medical, Otolaryngology, Pulmonology, Urology
    2. Business News:

      Acquisition, Clinical Trials, Funding, Other Business News, Partnership, Patents
    3. Technology:

      Broadband Sources, Probes, Tunable Sources
    4. Miscellaneous:

      Jobs & Studentships, Student Theses, Textbooks
  2. About Ramona Cernat

    Ramona Cernat

    Ramona Cernat is Research Scientist at the National Institute for Laser, Plasma & Radiation Physics (NILPRP), Bucharest-Magurele, Romania. In 2003 she obtained a Marie Curie Fellowship with the Applied Optics Group (AOG) in the School of Physical Sciences at the University of Kent in Canterbury, UK on "Training on optical devices, configurations and techniques applied in biomedical optics". Her research was selected for the very first presentation of UK Physics Research and R&D at the House of Commons - SET for BRITAIN/Physics 2005 - House of Commons, London, UK. She has received her Ph.D. in Physics from the Polytechnics University of Bucharest in 2010. Dr. Cernat is currently a Research Associate within the AOG on a research project supported by the Moorfields Eye Hospitals’ Biomedical Research Centre (BRC) and UCL Institute of Ophthalmology. She is a member of SPIE and of the Romanian Association for Photonics (ARFO).