1. Articles from Zhong Chen

    1-3 of 3
    1. Bioabsorbable Drug-Eluting Stent Versus Bare Metal Stent in Iliac Artery Evaluated by Optical Coherence Tomography: An In Vivo Study in Porcine

      Bioabsorbable Drug-Eluting Stent Versus Bare Metal Stent in Iliac Artery Evaluated by Optical Coherence Tomography: An In Vivo Study in Porcine

      Objective: This study aimed to compare, using optical coherence tomography (OCT), the outcomes of bioabsorbable drug-eluting stent with those of bare metal stent (BMS) following implantation in porcine iliac artery. Methods: After the placement of BMS and bioabsorbable drug-eluting stents, we used OCT and digital subtraction angiography to investigate stent appositions, arterial neointima, evagination, and restenosis at 1 and 3 months. Results: At 1 and 3 months after stent implantation, OCT study was performed to investigate 32 stents and 21 788 struts. Thirty-three malapposed struts were found in the bioabsorbable drug-eluting stent groups and 2 were found in BMS groups ...

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    2. Optimization of the Source Power Usage in Spectral Domain Optical Coherence Tomography

      Optimization of the Source Power Usage in Spectral Domain  Optical Coherence Tomography

      Source power consumption and system sensitivity of a spectrometer based optical coherence tomography (SD-OCT) system are investigated. Our study shows that the performance of SD-OCT system can be classified into two categories based on the beam splitting ratio R between the sample and reference rams in the Michelson interferometer. For the classic SD-OCT configuration, R is less than 1.0, and improvement of sample light collection efficiency through reducing R will increase the cost of OCT source power. We find that through combining the detection and source arms of a Michelson interferometer together with a fiber optic circulator and choosing ...

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    3. Improved motion contrast and processing efficiency in OCT angiography using complex-correlation algorithm

      Improved motion contrast and processing efficiency in OCT angiography using complex-correlation algorithm

      The complex-based OCT angiography (Angio-OCT) offers high motion contrast by combining both the intensity and phase information. However, due to involuntary bulk tissue motions, complex-valued OCT raw data are processed sequentially with different algorithms for correcting bulk image shifts (BISs), compensating global phase fluctuations (GPFs) and extracting flow signals. Such a complicated procedure results in massive computational load. To mitigate such a problem, in this work, we present an inter-frame complex-correlation (CC) algorithm. The CC algorithm is suitable for parallel processing of both flow signal extraction and BIS correction, and it does not need GPF compensation. This method provides high ...

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    1-3 of 3
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  2. Topics in the News

    1. (1 articles) Capital Medical University
    2. (1 articles) Zhejiang University
    3. (1 articles) University of Washington
    4. (1 articles) Yimin Wang
    5. (1 articles) Zhihua Ding
    6. (1 articles) Xiangyang Zhang
    7. (1 articles) Peng Li
    8. (1 articles) Washington University in St. Louis
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    Improved motion contrast and processing efficiency in OCT angiography using complex-correlation algorithm Optimization of the Source Power Usage in Spectral Domain  Optical Coherence Tomography Bioabsorbable Drug-Eluting Stent Versus Bare Metal Stent in Iliac Artery Evaluated by Optical Coherence Tomography: An In Vivo Study in Porcine Close Assessment and Testing for Chronic Graft Versus Host Disease, CATCH Study GaAs-Based InPBi Quantum Dots for High Efficiency Super-Luminescence Diodes Pearls and Pitfalls of Optical Coherence Tomography Angiography Image Interpretation Novel optical coherence tomography findings in idiopathic choroidal folds Artificial Intelligence and Healthcare: Products and Procedures Oral Diagnosis Minimally Invasive Imaging Approaches (Textbook) Machine learning, imaging technique may boost colon cancer diagnosis Choroidal thickness and the retinal ganglion cell complex in chronic Leberʼs hereditary optic neuropathy: a prospective study using swept-source optical coherence tomography Multimodality Imaging Approach for Combined Central Retinal Vein and Artery Occlusion: The Role of Optical Coherence Tomography Angiography