1. Arnaud Dubois

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    1. Mentioned In 36 Articles

    2. Mirau-based line-field confocal optical coherence tomography

      Mirau-based line-field confocal optical coherence tomography
      Line-field confocal optical coherence tomography (LC-OCT) is an imaging technique in which A-scans are acquired in parallel through line illumination with a broadband laser and line detection with a line-scan camera. B-scan imaging at high spatial resolution is achieved by dynamic focusing in a Linnik interferometer. This paper presents an LC-OCT device based on a custom-designed Mirau interferometer that offers similar spatial resolution and detection sensitivity. The device has the ...
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    3. Dual-mode line-field confocal optical coherence tomography for ultrahigh-resolution vertical and horizontal section imaging of human skin in vivo

      Dual-mode line-field confocal optical coherence tomography for ultrahigh-resolution vertical and horizontal section imaging of human skin in vivo
      Line-field confocal optical coherence tomography (LC-OCT) is a recently introduced technique for ultrahigh-resolution vertical section (B-scan) imaging of human skin in vivo . This work presents a new implementation of the LC-OCT technique to obtain horizontal section images (C-scans) in addition to B-scans. C-scan imaging is achieved with this dual-mode LC-OCT system using a mirror galvanometer for lateral scanning along with a piezoelectric chip for modulation of the interferometric signal. A ...
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    4. Comparison of line‐field confocal optical coherence tomography images with histological sections: Validation of a new method for in vivo and non‐invasive quantification of superficial dermis thickness

      Comparison of line‐field confocal optical coherence tomography images with histological sections: Validation of a new method for in vivo and non‐invasive quantification of superficial dermis thickness
      Background Line‐field confocal optical coherence tomography (LC‐OCT) is an imaging technique providing optical biopsies of the skin in real time and non‐invasively. At a center optical wavelength of 1.3 m, this innovative technology can be applied to dermo‐cosmetic product development due to both high image resolution (~2 m) and sufficient penetration (~0.5 mm). Nevertheless, the precise dermal area analyzed with LC‐OCT has never ...
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      Mentions: Arnaud Dubois
    5. Optical coherence tomography apparatus and method using line confocal filtering

      Optical coherence tomography apparatus and method using line confocal filtering
      An optical tomography apparatus comprises: a polychromatic light source, a one-dimensional optical sensor, an interferometric microscope, a one-dimensional confocal spatial filtering system, an actuation system making it possible to perform a one-way scan depthwise of an object to be observed and a processor for reconstructing a two-dimensional image of a section of the object from a plurality of one-dimensional interferential images acquired by the image sensor during the one-way scan ...
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    6. Simultaneous dual-band line-field confocal optical coherence tomography: application to skin imaging

      Simultaneous dual-band line-field confocal optical coherence tomography: application to skin imaging
      Line-field confocal optical coherence tomography (LC-OCT) operating in two distinct spectral bands centered at 770 nm and 1250 nm is reported, using a single supercontinuum light source and two different line-scan cameras. B-scans are acquired simultaneously in the two bands at 4 frames per second. Greyscale representation and color fusion of the images are performed to either produce a single image with both high resolution (1.3 m 1.2 ...
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      Mentions: Arnaud Dubois
    7. Line-field confocal time-domain optical coherence tomography with dynamic focusing

      Line-field confocal time-domain optical coherence tomography with dynamic focusing
      A time-domain optical coherence tomography technique is introduced for high-resolution B-scan imaging in real-time. The technique is based on a two-beam interference microscope with line illumination and line detection using a broadband spatially coherent light source and a line-scan camera. Multiple (2048) A-scans are acquired in parallel by scanning the sample depth while adjusting the focus. Quasi-isotropic spatial resolution of 1.3 m 1.1 m (lateral axial) is achieved ...
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    8. 5‐Year clinical follow‐up of the COBRA (complex coronary bifurcation lesions: Randomized comparison of a strategy using a dedicated self‐expanding biolimus A9‐eluting stent vs. a culotte strategy using everolimus‐eluting stents) study

      5‐Year clinical follow‐up of the COBRA (complex coronary bifurcation lesions: Randomized comparison of a strategy using a dedicated self‐expanding biolimus A9‐eluting stent vs. a culotte strategy using everolimus‐eluting stents) study
      Objectives We evaluated healing responses with optical coherence tomography, and long‐term clinical outcomes after treatment with a dedicated stent versus a conventional culotte technique. Background Dedicated bifurcation stents have been proposed as an alternative treatment for coronary bifurcation lesions. The long‐term performance of dedicated stents versus conventional dual‐stent techniques for the treatment of complex coronary bifurcation lesions is unknown. Methods Forty patients with true coronary bifurcation lesions ...
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    9. Line-field confocal optical coherence tomography for high-resolution noninvasive imaging of skin tumors

      Line-field confocal optical coherence tomography for high-resolution noninvasive imaging of skin tumors
      An optical technique called line-field confocal optical coherence tomography (LC-OCT) is introduced for high-resolution, noninvasive imaging of human skin in vivo . LC-OCT combines the principles of time-domain optical coherence tomography and confocal microscopy with line illumination and detection using a broadband laser and a line-scan camera. LC-OCT measures the echo-time delay and amplitude of light backscattered from cutaneous microstructures through low-coherence interferometry associated with confocal spatial filtering. Multiple A-scans are ...
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    10. A compact high‐speed full‐field optical coherence microscope for high‐resolution in vivo skin imaging

      A compact high‐speed full‐field optical coherence microscope for high‐resolution in vivo skin imaging
      A compact high‐speed full‐field optical coherence microscope has been developed for high‐resolution in vivo imaging of biological tissues. The interferometer, in the Linnik configuration, has a size of 11115 cm 3 and a weight of 210 g. Full‐field illumination with low‐coherence light is achieved with a high‐brightness broadband light‐emitting diode. High‐speed full‐field detection is achieved by using part of the image ...
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    11. Advances in optical coherence tomography for dermatology

      Advances in optical coherence tomography for dermatology
      This paper reports on advances in optical coherence tomography (OCT) for application in dermatology. Full-field OCT is a particular approach of OCT based on white-light interference microscopy. FF-OCT produces en face tomographic images by arithmetic combination of interferometric images acquired with an area camera and by illuminating the whole field of view with low-coherence light. The major interest of FF-OCT lies in its high imaging spatial resolution ( 1.0 m ...
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      Mentions: Arnaud Dubois
    12. 5-Year clinical follow-up of the COBRA (complex coronary bifurcation lesions: Randomized comparison of a strategy using a dedicated self-expanding biolimus A9-eluting stent vs. a culotte strategy using everolimus-eluting stents) study

      5-Year clinical follow-up of the COBRA (complex coronary bifurcation lesions: Randomized comparison of a strategy using a dedicated self-expanding biolimus A9-eluting stent vs. a culotte strategy using everolimus-eluting stents) study
      Objectives We evaluated healing responses with optical coherence tomography, and long-term clinical outcomes after treatment with a dedicated stent versus a conventional culotte technique. Background Dedicated bifurcation stents have been proposed as an alternative treatment for coronary bifurcation lesions. The long-term performance of dedicated stents versus conventional dual-stent techniques for the treatment of complex coronary bifurcation lesions is unknown. Methods Forty patients with true coronary bifurcation lesions were randomized to ...
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    13. Optical coherence tomography findings: insights from the “randomised multicentre trial investigating angiographic outcomes of hybrid sirolimus-eluting stents with biodegradable polymer compared with everolimus-eluting stents with durable polymer in chroni

      Optical coherence tomography findings: insights from the “randomised multicentre trial investigating angiographic outcomes of hybrid sirolimus-eluting stents with biodegradable polymer compared with everolimus-eluting stents with durable polymer in chroni
      Aims: The PRISON IV trial investigated the next-generation sirolimus-eluting stent (SES) with ultra-thin struts and biodegradable polymer against the second-generation everolimus-eluting stent (EES) with thin struts and durable polymer in patients with successfully recanalised chronic total occlusions (CTO). In this study, we examined the secondary optical coherence tomography endpoints. Methods and results: The main PRISON IV trial randomised 330 patients to either SES or EES. At nine months, 281 (85 ...
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    14. 1-15 of 36 1 2 3 »
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  2. About Arnaud Dubois

    Arnaud Dubois

    Arnaud Dubois is a Professor at the Institut d'Optique Graduate School in the Lasers et Biophotonique group at the Laboratoire Charles Fabry de l'Institut d'Optique, Universite' Paris-Sud, France