1. ESPCI ParisTech

    0 Comments Leave a Comment

    1-15 of 52 1 2 3 4 »

    1. Mentioned In 52 Articles

    2. Fast subsurface fingerprint imaging with full-field optical coherence tomography system equipped with a silicon camera

      Explore arxiv.org
      Fast subsurface fingerprint imaging with full-field optical coherence tomography system equipped with a silicon camera
      Images recorded below the surface of a finger can have more details and be of higher quality than conventional surface fingerprint images. This is particularly true when the quality of the surface fingerprints is compromised by, for example, moisture or surface damage. However, there is an unmet need for a cost effective fingerprint sensor that could record high-quality images at sufficient depth below the surface and in short-enough time. To ...
      Read Full Article
      Mentions: Claude Boccara ESPCI ParisTech

    3. Full-Field Optical Coherence Tomography as a Diagnosis Tool: Recent Progress with Multimodal Imaging

      Explore MDPI Open Access Journals Platform
      Full-Field Optical Coherence Tomography as a Diagnosis Tool: Recent Progress with Multimodal Imaging
      Full-field optical coherence tomography (FF-OCT) is a variant of OCT that is able to register 2D en face views of scattering samples at a given depth. Thanks to its superior resolution, it can quickly reveal information similar to histology without the need to physically section the sample. Sensitivity and specificity levels of diagnosis performed with FF-OCT are 80% to 95% of the equivalent histological diagnosis performances and could therefore benefit ...
      Read Full Article
      Mentions: Claude Boccara LLTech ESPCI ParisTech

    4. Extracting relevant information for cancer diagnosis from dynamic full field OCT through image processing and learning

      Explore Conference Proceedings
      Extracting relevant information for cancer diagnosis from dynamic full field OCT through image processing and learning
      For a large number of cancer surgeries, the lack of reliable intraoperative diagnosis leads to reoperations or bad outcomes for the patients. To deliver better diagnosis, we developed Dynamic Full Field OCT (D-FFOCT) as a complement to FFOCT. FFOCT already presents interesting results for cancer diagnosis e.g. Mohs surgery and reaching 96% accuracy on prostate cancer. D-FFOCT accesses the dynamic processes of metabolism and gives new tools to diagnose ...
      Read Full Article
      Mentions: Claude Boccara ESPCI ParisTech

    5. Retinal imaging with adaptive optics full-field OCT

      Explore Conference Proceedings
      Retinal imaging with adaptive optics full-field OCT
      Adaptive optics full-filed OCT (FFOCT) with a transmissive liquid crystal spatial light modulator (LCSLM) as wavefront corrector is used without strict plane conjugation for low order aberrations corrections. We validated experimentally that FFOCT resolution is independent of aberrations and only reduce the signal level. A signal based sensorless algorithm was thus applied for wavefront distortion compensation. Image quality improvements by the wavefront sensorless control of the LCSLM were evaluated on ...
      Read Full Article
      Mentions: Claude Boccara ESPCI ParisTech Mathias Fink

    6. Dynamic multimodal full-field optical coherence tomography and fluorescence structured illumination microscopy

      Explore SPIE | Journal Developmental Biology
      Dynamic multimodal full-field optical coherence tomography and fluorescence structured illumination microscopy
      We report on the development of a configuration of a multimodal full-field optical coherence tomography (FF-OCT) and fluorescence microscope. Our system can simultaneously acquire FF-OCT and structured illumination microscopy images. Dynamic parallel evolution of tissue microstructures and biochemical environments can be visualized. We use high numerical aperture objectives to optimize the combination of the two modalities. We imaged the propagation of mechanical waves initiated by calcium waves in a heart ...
      Read Full Article
      Mentions: Claude Boccara ESPCI ParisTech Mathias Fink

    7. En face coherence microscopy [Invited]

      Explore OSA | OSA Publishing Microscopy
      En face coherence microscopy [Invited]
      En face coherence microscopy or flying spot or full field optical coherence tomography or microscopy (FF-OCT/FF-OCM) belongs to the OCT family because the sectioning ability is mostly linked to the source coherence length. In this article we will focus our attention on the advantages and the drawbacks of the following approaches: en face versus B scan tomography in terms of resolution, coherent versus incoherent illumination and influence of aberrations ...
      Read Full Article
      Mentions: Claude Boccara ESPCI ParisTech Kate Grieve

    8. Diffuse shear wave imaging: toward passive elastography using low-frame rate spectral-domain optical coherence tomography

      Explore SPIE | Journal
      Diffuse shear wave imaging: toward passive elastography using low-frame rate spectral-domain optical coherence tomography
      Optical coherence tomography (OCT) can map the stiffness of biological tissue by imaging mechanical perturbations (shear waves) propagating in the tissue. Most shear wave elastography (SWE) techniques rely on active shear sources to generate controlled displacements that are tracked at ultrafast imaging rates. Here, we propose a noise-correlation approach to retrieve stiffness information from the imaging of diffuse displacement fields using low-frame rate spectral-domain OCT. We demonstrated the method on ...
      Read Full Article
      Mentions: Claude Boccara ESPCI ParisTech Thu-Mai Nguyen

    9. Intracellular dynamics measurements with full field optical coherence tomography suggest hindering effect of actomyosin contractility on organelle transport

      Explore OSA | OSA Publishing Microscopy
      Intracellular dynamics measurements with full field optical coherence tomography suggest hindering effect of actomyosin contractility on organelle transport
      Intracellular motion can be quantitatively monitored in tissues using coherence-gated microscopic techniques. With full-field optical coherence tomography (FFOCT), the use of high numerical aperture microscope objectives provides a high resolution mapping of intracellular dynamics that are probed with subwavelength sensitivity. In the upper temporal bandwidth that we have used (1-6 Hz) the main contribution to the dynamic signal arises from the overall dynamical, optically heterogeneous cytoplasm. We propose a method ...
      Read Full Article
      Mentions: Claude Boccara ESPCI ParisTech

    10. Adaptive optics full-field optical coherence tomography

      Explore SPIE | Journal
      Adaptive optics full-field optical coherence tomography
      We describe a simple and compact full-field optical coherence tomography (FFOCT) setup coupled to a transmissive liquid crystal spatial light modulator (LCSLM) to induce or correct aberrations. To reduce the system complexity, strict pupil conjugation was abandoned because low-order aberrations are often dominant. We experimentally confirmed a recent theoretical and experimental demonstration that the image resolution was almost insensitive to aberrations that mostly induce a reduction of the signal level ...
      Read Full Article
      Mentions: Claude Boccara ESPCI ParisTech Mathias Fink

    11. Full-field spatially incoherent illumination interferometry: a spatial resolution almost insensitive to aberrations

      Explore OSA | OSA Publishing
      Full-field spatially incoherent illumination interferometry: a spatial resolution almost insensitive to aberrations
      We show that with spatially incoherent illumination, the point spread function (PSF) width/spatial resolution of an imaging interferometer like that used in full-field optical coherence tomography (OCT) is almost insensitive to aberrations. In these systems, aberrations mostly induce a reduction of the signal level that leads to a loss of the signal-to-noise ratio without broadening the system PSF. This is demonstrated by comparison with traditional scanning OCT and wide-field ...
      Read Full Article
      Mentions: Claude Boccara ESPCI ParisTech Mathias Fink

    12. Appearance of the Retina With Full-Field Optical Coherence Tomography

      Explore IOVS Journal Ophthalmology
      Appearance of the Retina With Full-Field Optical Coherence Tomography
      Purpose : To interpret full-field optical coherence tomography (FFOCT) images of ex vivo retina. Methods : Flatmounted retinas of human, primate, pig, sheep, rat, and mouse were imaged using FFOCT. To identify retinal ganglion and amacrine cells, fixed samples immunolabeled against Tuj1 and Brn3a or live samples labeled in vitro with green fluorescent protein (GFP) were analyzed by combining FFOCT, fluorescence confocal microscopy (FCM), and fluorescence-FFOCT. To investigate postmortem tissue changes, time ...
      Read Full Article
      Mentions: Michel Pâques LLTech ESPCI ParisTech

    13. Dynamic full field optical coherence tomography: subcellular metabolic contrast revealed in tissues by interferometric signals temporal analysis

      Explore OSA | OSA Publishing
      Dynamic full field optical coherence tomography: subcellular metabolic contrast revealed in tissues by interferometric signals temporal analysis
      We developed a new endogenous approach to reveal subcellular metabolic contrast in fresh ex vivo tissues taking advantage of the time dependence of the full field optical coherence tomography interferometric signals. This method reveals signals linked with local activity of the endogenous scattering elements which can reveal cells where other OCT-based techniques fail or need exogenous contrast agents. We benefit from the micrometric transverse resolution of full field OCT to ...
      Read Full Article
      Mentions: Claude Boccara Fabrice Harms LLTech

    14. High-resolution handheld rigid endomicroscope based on full-field optical coherence tomography

      Explore SPIE | Journal
      High-resolution handheld rigid endomicroscope based on full-field optical coherence tomography
      Full-field optical coherence tomography (FF-OCT) is a powerful tool for nondestructive assessment of biological tissue, i.e., for the structural examination of tissue in depth at a cellular resolution. Mostly known as a microscopy device for ex vivo analysis, FF-OCT has also been adapted to endoscopy setups since it shows good potential for in situ cancer diagnosis and biopsy guidance. Nevertheless, all the attempts to perform endoscopic FF-OCT imaging did ...
      Read Full Article
      Mentions: Claude Boccara Fabrice Harms LLTech

    15. Dynamic full field optical coherence tomography: subcellular metabolic contrast revealed in tissues by temporal analysis of interferometric signals

      Explore arxiv.org
      Dynamic full field optical coherence tomography: subcellular metabolic contrast revealed in tissues by temporal analysis of interferometric signals
      We developed a new endogenous approach to reveal subcellular metabolic contrast in fresh ex vivo tissues taking advantage of the time dependence of the full field optical coherence tomography interferometric signals. This method reveals signals linked with local activity of the endogenous scattering elements which can reveal cells where other imaging techniques fail or need exogenous contrast agents. We benefit from the micrometric transverse resolution of full field OCT to ...
      Read Full Article
      Mentions: Claude Boccara Fabrice Harms ESPCI ParisTech
    17. 1-15 of 52 1 2 3 4 »
  1. Search:

  2. 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

  4. About ESPCI ParisTech

    ESPCI ParisTech

    ESPCI ParisTech is a major institution of higher education an internationally renowned research center, and a fertile ground of innovation for industry.  Founded by the City of Paris in 1882, for over a century the School has attracted leading scientific innovators like Nobel Prize laureates Pierre and Marie Curie, Paul Langevin, Frédéric Joliot-Curie, Pierre-Gilles de Gennes, and Georges Charpak, who continue to contribute to the institution’s international reputation.  The School’s culture of excellence remains as vibrant as ever. Fully 60% of graduates go on to complete a thesis and earn their PhD. The School’s teaching faculty and researchers are building tomorrow’s knowledge base, publishing an article a day in top international scientific journals ; inventing the industry of the future, filing for a patent every single week.  A model of excellence and an illustration of the "French exception", ESPCI ParisTech is a founding member of ParisTech, the Paris Institute of Science and Technology.  Also see Langevin Institute (L’institut Langevin).

  5. Related Topics

    1. Full-field optical coherence tomography (oct) and early alterations in chloroplast morphology
      46 articles also mentioned Claude Boccara
    2. Full-field OCT approaches clinical application
      25 articles also mentioned LLTech
    3. LLTech brings optical biopsies to operating theaters: Coherence tomography technique allows surgeons to see biopsy results in 3D and almost real-time.
      16 articles also mentioned LLTech Light-CT Scanner
    4. Large Field, High Resolution Full-Field Optical Coherence Tomography: A Pre-clinical Study of Human Breast Tissue and Cancer Assessment
      10 articles also mentioned Fabrice Harms
    5. From supersonic shear wave imaging to full-field optical coherence shear wave elastograph
      8 articles also mentioned Mathias Fink