1. Charles-Étienne Bisaillon

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    1. Mentioned In 11 Articles

    2. Artery phantoms for intravascular optical coherence tomography: diseased arteries

      Artery phantoms for intravascular optical coherence tomography: diseased arteries

      We propose and test various strategies for the creation of artery phantoms mimicking different kinds of diseased arteries when imaged by intravascular optical coherence tomography (IVOCT). We first review the method for making healthy artery phantoms. We then describe the procedure to fabricate diseased artery phantoms with intima thickening, lipid pool, thin-capped fibroatheroma, calcification, and restenosis (homogeneous and layered) after stent apposition. For each case, a phantom is fabricated, an IVOCT image is obtained, and the image is compared to that of a real artery.

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    3. Intravascular optical coherence tomography to characterize tissue deformation during angioplasty: preliminary experiments with artery phantoms

      Intravascular optical coherence tomography to characterize tissue deformation during angioplasty: preliminary experiments with artery phantoms

      We explored the potential of intravascular optical coherence tomography (IVOCT) to assess deformation during angioplasty balloon inflation. Using a semi-compliant balloon and artery phantoms, we considered two experimental scenarios. The goal for the first scenario was to investigate if variation in the elasticity of the structure surrounding the balloon could be sensed by IVOCT monitoring. In this scenario, we used three single-layer phantoms with various mechanical properties. Image analysis was performed to extract the inner and outer diameters of the phantoms at various pressures. The goal for the second scenario was twofold. First, we investigated the IVOCT capability to monitor ...

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    4. Review of tissue simulating phantoms with controllable optical, mechanical and structural properties for use in optical coherence tomography

      Review of tissue simulating phantoms with controllable optical, mechanical and structural properties for use in optical coherence tomography

      We review the development of phantoms for optical coherence tomography (OCT) designed to replicate the optical, mechanical and structural properties of a range of tissues. Such phantoms are a key requirement for the continued development of OCT techniques and applications. We focus on phantoms based on silicone, fibrin and poly(vinyl alcohol) cryogels (PVA-C), as we believe these materials hold the most promise for durable and accurate replication of tissue properties.

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    5. Feature Of The Week 9/12/10: Intravascular Optical Coherence Tomography Studies on an Excised Beating Heart – a New Model and an Amazing Video

      Feature Of The Week 9/12/10: Intravascular Optical Coherence Tomography Studies on an Excised Beating Heart – a New Model and an Amazing Video
      Feature Of The Week 9/12/10: This week we have another very impressive presentation from Dr. Guy Lamouche and his colleagues from National Research Council Canada describing the advantages and limitations of using a beating heart model in the development of intravascular optical coherence tomography. The model fills the gap between bench experiments, performed on phantoms and excised arteries, and whole animal in-vivo preparations. The beating heart model is stable for many hours, allowing for extended measurement times and multiple imaging sessions under in-vivo conditions without the complications of maintaining whole-animal preparation. The perfusate supplying the heart with nutrients ...
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    6. Multilayer tubular phantoms for optical coherence tomography

      Multilayer tubular phantoms for optical coherence tomography
      We report preliminary results toward making artery phantoms for Optical Coherence Tomography (OCT) that also exhibit mechanical properties similar to arteries for large deformation regimes. A matrix of PVA cryogels is used to obtain the strain hardening effect characteristic of arteries. Means of adjusting the optical properties of PVA cryogels are investigated and the resulting mechanical properties are characterized.
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    7. Ex vivo imaging of early dental caries within the interproximal space

      Lin-P'ing Choo-Smith, Mark D. Hewko, Marc L. Dufour et al. Optical coherence tomography (OCT) is emerging as a technology that can potentially be used for the detection and monitoring of early dental enamel caries since it can provide high-resolution depth imaging of early lesions. To date, most caries detection optical technologies are well suited for exam ... [Proc. SPIE 7162, 716206 (2009)] published Wed Feb 18, 2009.
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    8. Deformable and durable phantoms with controlled density of scatterers

      Author(s): Charles-Etienne Bisaillon, Guy Lamouche, Romain Maciejko, Marc Dufour and Jean-Pierre Monchalin. Affiliation(s): Industrial Materials Institute, National Research Council Canada, 75 de Mortagne, Boucherville, Québec J4B 6Y4, Canada; Optoelectronics Laboratory, Engineering Physics, Ecole Polytechnique de Montréal, PO Box 6079, Station 'Centre-ville' Montréal, Québec H3C 3A7, Canada
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    9. 1-11 of 11
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  2. About Charles-Étienne Bisaillon

    Charles-Étienne Bisaillon is a researcher in the NRC Genomics and Health Initiative at the National Research council Canada.