1. Gaku Nakazawa

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    1. Mentioned In 12 Articles

    2. Impact of hemodialysis on clinical and angiographic outcomes in in-stent restenotic lesions following optical coherence tomography-guided drug-coated balloon treatment

      Explore Home - Springer Cardiology
      Impact of hemodialysis on clinical and angiographic outcomes in in-stent restenotic lesions following optical coherence tomography-guided drug-coated balloon treatment
      Hemodialysis (HD) is associated with a high in-stent restenosis (ISR) rate even in the second-generation era. Drug-coated balloons (DCB) generally provide excellent clinical outcomes in patients with ISR lesions. Nonetheless, safety and efficacy of DCB for ISR lesions in HD patients are largely unknown. A total of 17 centers across Japan participated in this study. Patients were eligible for the study if ISR lesions were treated with DCB. Enrolled patients ...
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      Mentions: Kitasato University Maoto Habara Gaku Nakazawa

    3. Expert consensus statement for quantitative measurement and morphological assessment of optical coherence tomography

      Explore Home - Springer Cardiology
      Expert consensus statement for quantitative measurement and morphological assessment of optical coherence tomography
      In this document, the methods for the quantitative measurement and morphological assessment of optical coherence tomography (OCT)/optical frequency domain imaging images (OFDI) are briefly summarized. The focus is on the clinical application of OCT/OFDI to guide percutaneous coronary interventions.
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      Mentions: Wakayama Medical University Kenichi Fujii Takashi Kubo

    4. Comparison between Optical COherence tomography guidance and Angiography guidance in percutaneous coronary intervention (COCOA): Study protocol for a randomized controlled trial

      Explore Journal of Cardiology Cardiology
      Comparison between Optical COherence tomography guidance and Angiography guidance in percutaneous coronary intervention (COCOA): Study protocol for a randomized controlled trial
      Background Optical coherence tomography (OCT) is increasingly used as an adjunct to coronary angiography for guiding percutaneous coronary intervention (PCI). The current consensus on PCI is that the large final stent area offers the best chance of a good late clinical outcome. Since OCT provides more accurate information about the coronary artery and implanted stents, OCT-guided stent implantation is expected to achieve greater stent expansion than angiography guidance alone. Therefore ...
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      Mentions: Wakayama Medical University Takashi Kubo Hironori Kitabata

    5. Optical Frequency Domain Imaging Versus Intravascular Ultrasound in Percutaneous Coronary Intervention (OPINION Trial) : Results From the OPINION Imaging Study

      Explore ScienceDirect Cardiology
      Optical Frequency Domain Imaging Versus Intravascular Ultrasound in Percutaneous Coronary Intervention (OPINION Trial) : Results From the OPINION Imaging Study
      Objectives We sought to clarify how intravascular ultrasound (IVUS) and optical coherence tomography affect percutaneous coronary intervention (PCI) with current-generation drug-eluting stents in a pre-specified substudy of the OPINION (OPtical frequency domain imaging versus INtravascular ultrasound in percutaneous coronary interventiON) trial, a multicenter, prospective, randomized, noninferiority trial comparing optical frequency domain imaging (OFDI)-guided PCI with IVUS-guided PCI. Background The impact of these 2 imaging modalities in guiding PCI remains ...
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      Mentions: Wakayama Medical University Takashi Kubo Junya Shite

    6. Tissue characterization with depth-resolved attenuation coefficient and backscatter term in intravascular optical coherence tomography images

      Explore SPIE Digital Library Cardiology
      Tissue characterization with depth-resolved attenuation coefficient and backscatter term in intravascular optical coherence tomography images
      An important application of intravascular optical coherence tomography (IVOCT) for atherosclerotic tissue analysis is using it to estimate attenuation and backscatter coefficients. This work aims at exploring the potential of the attenuation coefficient, a proposed backscatter term, and image intensities in distinguishing different atherosclerotic tissue types with a robust implementation of depth-resolved (DR) approach. Therefore, the DR model is introduced to estimate the attenuation coefficient and further extended to estimate ...
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      Mentions: Leiden University Academic Medical Center at the University of Amsterdam Patrick W. Serruys

    7. Optical frequency domain imaging vs. intravascular ultrasound in percutaneous coronary intervention (OPINION trial): one-year angiographic and clinical results

      Explore Journals Cardiology
      Optical frequency domain imaging vs. intravascular ultrasound in percutaneous coronary intervention (OPINION trial): one-year angiographic and clinical results
      Aims Optical frequency domain imaging (OFDI) is a recently developed, light-based, high-resolution intravascular imaging technique. Intravascular ultrasound (IVUS) is a widely used, conventional imaging technique for guiding percutaneous coronary intervention (PCI). We aimed to demonstrate the non-inferiority of OFDI-guided PCI compared with IVUS-guided PCI in terms of clinical outcomes. Methods and results We did a prospective, multicentre, randomized (ratio 1:1), active-controlled, non-inferiority study to compare head-to-head OFDI vs. IVUS ...
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      Mentions: Terumo Corporation Wakayama Medical University European Society of Cardiology

    8. Optical frequency domain imaging vs. intravascular ultrasound in percutaneous coronary intervention (OPINION trial): Study protocol for a randomized controlled trial

      Explore Journal of Cardiology Cardiology
      Optical frequency domain imaging vs. intravascular ultrasound in percutaneous coronary intervention (OPINION trial): Study protocol for a randomized controlled trial
      Background Optical coherence tomography is becoming increasingly widespread as an adjunctive intravascular diagnostic technique in percutaneous coronary intervention (PCI), because of its ability to visualize coronary structures at high resolution. Several studies have reported that intravascular ultrasound (IVUS) guidance in PCI might be helpful to reduce subsequent stent thrombosis, restenosis, repeat revascularization, myocardial infarction, and cardiac death. The OPtical frequency domain imaging vs. INtravascular ultrasound in percutaneous coronary InterventiON (OPINION ...
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      Mentions: Wakayama Medical University Takashi Kubo Takashi Akasaka

    9. Evaluation of Coronary Arterial Calcification - Ex-vivo Assessment by Optical Frequency Domain Imaging

      Explore atherosclerosis-journal.com Cardiology
      Evaluation of Coronary Arterial Calcification - Ex-vivo Assessment by Optical Frequency Domain Imaging
      Aims The purpose of this study was to determine the diagnostic ability of optical frequency domain imaging (OFDI) to carry out quantitative and qualitative evaluation of coronary calcification in comparing with ex vivo human autopsy heart specimens. Methods Analysis was carried out in 25 coronary artery specimen obtained from 16 cadavers that were imaged ex-vivo imaging by OFDI and intravascular ultrasound (IVUS). Of 235 cross-sections obtained for histologic evaluation, 149 ...
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      Mentions: Gaku Nakazawa Masataka Nakano

    10. Optical Coherence Tomography and Histopathology Assessment After Implantation of First- and Second-Generation Drug-Eluting Stents in a Porcine Coronary Model

      Explore jstage.jst.go.jp Cardiology
      Optical Coherence Tomography and Histopathology Assessment After Implantation of First- and Second-Generation Drug-Eluting Stents in a Porcine Coronary Model
      Background: This study directly compared optical coherence tomography (OCT) and histopathology for the assessment of vascular response to first- and second-generation drug-eluting stents. Methods and Results: Sirolimus-, everolimus-, and biolimus-eluting stents (SES, EES, and BES, respectively) were randomly implanted into the coronary arteries of 12 porcine. OCT was conducted after implantation: at 1, 3, and 6 months; histopathology was assessed at 3 and 6 months. At 1-month OCT, EES had ...
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      Mentions: Hiroyuki Kawamori Ken-ichi Hirata Junya Shite
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  4. About Gaku Nakazawa

    Gaku Nakazawa, MD, is with CV Path, Gaithersburg, Maryland.

  5. Related Topics

    1. Optical Coherence Tomography and Histopathology Assessment After Implantation of First- and Second-Generation Drug-Eluting Stents in a Porcine Coronary Model
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    2. Optical frequency domain imaging vs. intravascular ultrasound in percutaneous coronary intervention (OPINION trial): Study protocol for a randomized controlled trial
      5 articles also mentioned Takashi Kubo