1. Articles from Dexter Barrows

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    1. Optical coherence tomography for dynamic axial correction of an optical end-effector for robot-guided surgical laser ablation

      Optical coherence tomography for dynamic axial correction of an optical end-effector for robot-guided surgical laser ablation

      Robot-guided laser ablation for surgical applications potentially offers many advantages compared to by-hand mechanical tissue cutting. However, given that tissue can be rough and/or uneven, ablation quality can be compromised if the beam waist deviates significantly from the target tissue surface. Therefore, we present a method that uses optical coherence tomography (OCT) for dynamic refocusing of robot-guided surgical laser ablation. A 7-DOF robotic manipulator with an OCT-equipped optical payload was used to simulate robotic guided laser osteotomy. M-mode OCT feedback is used for continuous surface detection to correct for axial deviations along the ablation path due to surface nonuniformity ...

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    2. Graphics processor unit acceleration enables realtime endovascular Doppler optical coherence tomography imaging

      Graphics processor unit acceleration enables realtime endovascular Doppler optical coherence tomography imaging

      Endovascular Optical Coherence Tomography (OCT) has previously been used in both bench-top and clinical environments to produce vascular images, and can be helpful in characterizing, among other pathologies, plaque build-up and impedances to normal blood ow. The raw data produced can also be processed to yield high- resolution blood velocity information, but this computation is expensive and has previously only been available a posteriori using post-processing software. Real-time Doppler OCT (DOCT) imaging has been demonstrated before in the skin and eye, but this capability has not been available to vascular surgeons. Graphics Processing Units (GPUs) can be used to dramatically ...

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    1-2 of 2
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  2. Topics in the News

    1. (2 articles) Ryerson University
    2. (2 articles) Victor X. D. Yang
    3. (1 articles) Sunnybrook Health Sciences Centre
    4. (1 articles) Harvard University
    5. (1 articles) University of Toronto
    6. (1 articles) Kenneth K. C. Lee
    7. (1 articles) Medical University of Vienna
    8. (1 articles) Harbin Medical University
    9. (1 articles) Université Pierre et Marie Curie
    10. (1 articles) University of Erlangen
    11. (1 articles) Wolfgang Drexler
    12. (1 articles) Adrian G. Podoleanu
    13. (1 articles) Mengyang Liu
    14. (1 articles) Bo Yu
    15. (1 articles) Rainer A. Leitgeb
    16. (1 articles) Angelika Unterhuber
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