1. Articles from Akiyoshi Miyazawa

    1-4 of 4
    1. Outcomes of everolimus-eluting stent incomplete stent apposition: a serial optical coherence tomography analysis

      Outcomes of everolimus-eluting stent incomplete stent apposition: a serial optical coherence tomography analysis

      Aim The aim of the present study was to evaluate the natural course of acute incomplete stent apposition (ISA) after second-generation everolimus-eluting stent (EES) when compared with first-generation sirolimus-eluting stent (SES) by using optical coherence tomography (OCT). Methods and results From the OCT substudy of the RESET trial, we identified 77 patients (EES = 38 and SES = 39) who successfully underwent serial OCT examination at post-stenting and 8–12-month follow-up. The presence of ISA was assessed in the OCT images, and ISA distance was measured from the centre of the strut blooming to the adjacent lumen border. Incomplete stent apposition was ...

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    2. Predominant microvessel proliferation in coronary stent restenotic tissue in patients with diabetes: Insights from optical coherence tomography image analysis

      Predominant microvessel proliferation in coronary stent restenotic tissue in patients with diabetes: Insights from optical coherence tomography image analysis

      Background Coronary optical coherence tomography (OCT) enables virtual depiction of histological findings of in-stent restenotic tissue. The aim of this study was to investigate the microvessel proliferation within in-stent restenotic tissue and the influence of diabetes mellitus (DM). Methods We examined 54 in-stent restenotic coronary artery lesions (stenotic area > 50%) from 50 consecutive patients including 28 with DM (56%) and 9 insulin-treated DM patients (18%); who underwent coronary time-domain OCT imaging with automatic pull back (1 mm/s, 20 frames/s). Microvessels were defined as low-signal cavities with a diameter of 50–150 microns and a trajectory parallel to the ...

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    3. Quantitative coronary optical coherence tomography image analysis for the signal attenuation observed in-stent restenotic tissue

      Quantitative coronary optical coherence tomography image analysis for the signal attenuation observed in-stent restenotic tissue
      Pivotal clinical trials have shown that the drug-eluting stent (DES) ameliorated mid-term target lesion revascularization rate . Nevertheless, late catch up phenomenon is the growing concern in the patients with DES . Previous study has shown that the restenotic tissue after DES implantation shows thrombus formation or inflammatory cells even at chronic phase. Thromborestenosis should be the concern for the prevention of late stent thrombosis .
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    4. Incidence and significance of the pseudo stent strut in optical coherence tomography analysis for coronary artery stents

      Incidence and significance of the pseudo stent strut in optical coherence tomography analysis for coronary artery stents
      Introduction: Quantitative optical coherence tomography (OCT) analysis is about to be relevant for the correct assessment of incomplete stent apposition which can result to late stent thrombosis. Nevertheless, the pseudo stent struts (PS), which show the strong signal same as the true strut, are sometimes seen at odd positions in the lumen and locate at the same distance from the image wire as a true strut. PS may be produced by the distorted beam and interfere accurate analysis. Our aim was to investigate the incidence of PS. Methods: We created a simple phantom model (2.5 mm-coronary artery stent apposed ...
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    1-4 of 4
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  2. Topics in the News

    1. (1 articles) Kobe University Graduate School of Medicine
    2. (1 articles) Kazushige Kadota
    3. (1 articles) Toshiro Shinke
    4. (1 articles) Takashi Kubo
    5. (1 articles) Yasushi Ino
    6. (1 articles) Takashi Akasaka
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    Incidence and significance of the pseudo stent strut in optical coherence tomography analysis for coronary artery stents Quantitative coronary optical coherence tomography image analysis for the signal attenuation observed in-stent restenotic tissue Predominant microvessel proliferation in coronary stent restenotic tissue in patients with diabetes: Insights from optical coherence tomography image analysis Outcomes of everolimus-eluting stent incomplete stent apposition: a serial optical coherence tomography analysis Evaluation of Age-related Skin Changes and Instrument Reliability Using Clinical Probe Measurements and Imaging Modalities HP-OCT™ wins Victorian AEEA award – nominated for Sir William Hudson award Postdoctoral Scholar in High Resolution Retinal Imaging at The Ohio State University Cone Photoreceptor Integrity assessed with Adaptive Optics Imaging after Laser-Pointer-Induced Retinal Injury Quantitative assessment of macular microvasculature and radial peripapillary capillary plexus in the fellow eyes of patients with retinal vein occlusion using OCT angiography Identification of the type of stent with three-dimensional optical coherence tomography: the SPQR study Serial optical coherence tomography findings after drug-coated balloon treatment in de novo coronary bifurcation lesion Serial optical coherence tomography for characterization of coronary lithotripsy efficacy: How much is enough?