1. Articles from M. Shishkov

    1-4 of 4
    1. Flexible transbronchial optical frequency domain imaging smart needle for biopsy guidance

      Flexible transbronchial optical frequency domain imaging smart needle for biopsy guidance

      Transbronchial needle aspiration (TBNA) is a procedure routinely performed to diagnose peripheral pulmonary lesions. However, TBNA is associated with a low diagnostic yield due to inappropriate needle placement. We have developed a flexible transbronchial optical frequency domain imaging (TB-OFDI) catheter that functions as a “smart needle” to confirm the needle placement within the target lesion prior to biopsy. The TB-OFDI smart needle consists of a flexible and removable OFDI catheter (430 µm dia.) that operates within a standard 21-gauge TBNA needle. The OFDI imaging core is based on an angle polished ball lens design with a working distance of 160 ...

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    2. Compensation of motion artifacts in catheter-based optical frequency domain imaging

      Compensation of motion artifacts in catheter-based optical frequency domain imaging

      , , M. Colice, W. Y. Oh, H. Yoo, L. Liu, G. J. Tearney, B. E. Bouma A novel heterodyne Doppler interferometer method for compensating motion artifacts caused by cardiac motion in intracoronary optical frequency domain imaging (OFDI) is demonstrated. To track the relative motion of a catheter with regard to the vessel, a motion tracking system is incorporated with a ... [Opt. Express 18, 11418-11427 (2010)]

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    3. Evaluation of intracoronary stenting by intravascular optical coherence tomography

      Wellman Laboratories of Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA Background: Conventional contrast cineangiography and intravascular ultrasound (IVUS) provide a limited definition of vessel microstructure and are unable to evaluate dissection, tissue prolapse, and stent apposition on a size scale less than 100 µm. Objective: To evaluate the use of intravascular optical coherence tomography (OCT) to assess the coronary arteries in patients undergoing coronary stenting. Methods: OCT was employed in patients having percutaneous coronary interventions. Images were obtained before initial balloon dilatation and following stent deployment, and were evaluated for vessel dissection, tissue prolapse, stent apposition ...
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    4. High-speed polarization sensitive optical frequency domain imaging with frequency multiplexing

      W.Y. Oh, S.H. Yun, B.J. Vakoc, M. Shishkov, A.E. Desjardins, B.H. Park, J.F. de Boer, G.J. Tearney, B.E. Bouma. Polarization sensitive optical coherence tomography (PS-OCT) provides a cross-sectional image of birefringence in biological samples that is complementary in many applications to the standard reflectance-based image. Recent ex vivo studies have demonstrated that birefringence mapping enables the ... [Opt. Express 16, 1096-1103 (2008)]
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    1-4 of 4
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  2. Topics in the News

    1. (4 articles) Massachusetts General Hospital
    2. (4 articles) Harvard University
    3. (1 articles) Kinki University
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    Compensation of motion artifacts in catheter-based optical frequency domain imaging Flexible transbronchial optical frequency domain imaging smart needle for biopsy guidance Structural abnormalities associated with glaucoma using swept-source optical coherence tomography in patients with systemic sclerosis Clinical presentation does not affect acute mechanical performance of the Novolimus-eluting bioresorbable vascular scaffold as assessed by optical coherence tomography Evaluating optical coherence tomography (OCT) findings as potential biomarkers in central nervous system (CNS) lymphoma with or without ocular involvement Polarization sensitive optical coherence tomography with single input for imaging depth-resolved collagen organizations Etanercept Therapy for Nails Psoriasis Monitoring With Noninvasive Imaging The Use of Optical Coherence Tomography to Asscess Water Transport Through The Urothelium of The Porcine Bladder Evaluation of the Effect of Covid-19 on Optic Disk and Macula with OCT and OCT-Angiography Simulating scan formation in multimodal optical coherence tomography: angular-spectrum formulation based on ballistic scattering of arbitrary-form beams Polypoidal Choroidal Vasculopathy Diagnosis and Neovascular Activity Evaluation Using Optical Coherence Tomography Angiography Bacillary layer detachment on optical coherence tomography in exudative age-related macular degeneration