1. Articles from Nobuyoshi Tanaka

    1-8 of 8
    1. Response to Letter Regarding Article, "Impact of Frequency-Domain Optical Coherence Tomography Guidance for Optimal Coronary Stent Implantation in Comparison With Intravascular Ultrasound Guidance"

      Response to Letter Regarding Article, "Impact of Frequency-Domain Optical Coherence Tomography Guidance for Optimal Coronary Stent Implantation in Comparison With Intravascular Ultrasound Guidance"

      We appreciate the valuable comments by Garcia-Garcia et al regarding our article.1 We agree with the comments on our limitations about study design especially with regard to criteria of the procedure. First, the efficacy of distal protection devices in native coronary arteries is still controversial, and criteria regarding usage of this device are not defined yet. However, we believe this device could be helpful for prevention of distal embolus in certain cases as we have sometimes experienced, and optical frequency-domain imaging (OFDI) is helpful to predict such cases. Making use of the criteria of this study, distal protection was ...

      Read Full Article
    2. Impact of Frequency-Domain Optical Coherence Tomography Guidance for Optimal Coronary Stent Implantation in Comparison With Intravascular Ultrasound Guidance

      Impact of Frequency-Domain Optical Coherence Tomography Guidance for Optimal Coronary Stent Implantation in Comparison With Intravascular Ultrasound Guidance

      Background—Frequency-domain optical coherence tomography (FD-OCT) is a novel, high resolution intravascular imaging modality. Intravascular ultrasound (IVUS) is a widely used conventional imaging modality for achieving optimal stent deployment. The aim of this study was to evaluate the impact of FD-OCT guidance for coronary stent implantation compared with IVUS guidance. Methods and Results—A total of 70 patients with de novo coronary artery lesions and either unstable or stable angina pectoris were enrolled in this randomized study (optical coherence tomography [OCT] group: n=35, IVUS group: n=35). In the OCT group, stent implantation was performed under FD-OCT guidance alone ...

      Read Full Article
    3. The impact of epicardial fat volume on coronary plaque vulnerability: insight from optical coherence tomography analysis

      The impact of epicardial fat volume on coronary plaque vulnerability: insight from optical coherence tomography analysis

      Aims Epicardial fat volume (EFV) has been implicated in coronary artery disease. Relationship between EFV and coronary plaque vulnerability has not been elucidated. The aim of this study was to investigate the association of EFV with coronary plaque vulnerability by using optical coherence tomography (OCT). Methods and results We enrolled 117 patients who underwent multislice computed tomography (MSCT) and OCT. EFV was quantified on MSCT. Patients were categorized according to tertiles of EFV: low tertile, EFV 3 ; mid-tertile, 104.1 cm 3 ≤ EFV ≤ 130.7 cm 3 ; high tertile, EFV > 130.7 cm 3 . A total of 180 vessels and ...

      Read Full Article
    4. Difference of Tissue Characteristics Between Early and Very Late Restenosis Lesions After Bare-Metal Stent Implantation: An Optical Coherence Tomography Study

      Difference of Tissue Characteristics Between Early and Very Late Restenosis Lesions After Bare-Metal Stent Implantation: An Optical Coherence Tomography Study
      Background—Although in-stent restenosis (ISR) after bare-metal stent (BMS) implantation peaks in the early phase, very late (VL) ISR occasionally is observed beyond a few years after BMS implantation. To date, this mechanism has not been fully clarified. Methods and Results—We compared the morphological characteristics of VL-ISR (>5 years, without restenosis within the first year) (n=43) to those of early (E) ISR (within the first year) (n=39) using optical coherence tomography (OCT). Qualitative restenotic tissue analysis included assessment of tissue structure (homogeneous or heterogeneous), presence of microvessels, disrupted intima with cavity, and intraluminal material and was performed ...
      Read Full Article
    5. Comparison of In Vivo Assessment of Vulnerable Plaque by 64-Slice Multislice Computed Tomography Versus Optical Coherence Tomography

      Comparison of In Vivo Assessment of Vulnerable Plaque by 64-Slice Multislice Computed Tomography Versus Optical Coherence Tomography
      The aim of this study was to investigate the possibility of 64-slice multislice computed tomography (MSCT) to detect vulnerable plaque derived by optical coherence tomography. From September 2007 through December 2009, 122 lesions in 81 patients were evaluated by 64-slice MSCT and optical coherence tomography. Based on optical coherence tomographic findings, lesions were classified as thin-capped fibroatheroma (TCFA; n = 37) and non-TCFA (n = 85). Mean computed tomographic density value of the lesion was lower and remodeling index was larger in the TCFA group (44.9 ± 19.2 vs 78.7 ± 25.0 HU, p
      Read Full Article
    6. Different Patterns of Vascular Response Between Patients With or Without Diabetes Mellitus After Drug-Eluting Stent Implantation: Optical Coherence Tomographic Analysis

      Different Patterns of Vascular Response Between Patients With or Without Diabetes Mellitus After Drug-Eluting Stent Implantation: Optical Coherence Tomographic Analysis
      Objectives We performed this study to investigate with optical coherence tomography (OCT) the vascular response after sirolimus-eluting stent (SES) implantation between patients with and those without diabetes mellitus (DM). Background The difference in vascular response after SES implantation between patients with and those without DM has not been fully evaluated with OCT. Methods Optical coherence tomography was performed to examine 74 nonrestenotic SES implanted in 63 patients (32 with DM and 31 without DM) at 9 months after SES implantation. For struts showing neointimal coverage, the neointimal thickness on the luminal side of each strut section was measured, and neointimal ...
      Read Full Article
    7. Comparative Analysis of Vascular Responses Following Stent Implantation in the Lesion Wth Acute Coronary Syndrome Between Paclitaxel-Eluting and Bare-Metal Stent Using Optical Coherence Tomography

      Background: Safety and feasibility of drug-eluting stent in the lesion with acute coronary syndrome (ACS) is still controversial. Optical coherence tomography (OCT) is a high-resolution intravascular imaging modality, which is expected to visualize microscopic vascular response to coronary intervention. The purpose of this study is to evaluate the difference of vascular responses following stent implantation in the ACS lesions between paclitaxel-eluting stent (PES) and bare-metal stent (BMS) using OCT. Method: Fifty-eight ACS patients who were treated with either PES or BMS (33PESs and 25 BMSs) underwent OCT at 3 months follow-up, and 38 of them (20PESs and 18BMSs) also had ...
      Read Full Article
    8. Detection of Vulnerable Plaque by Multislice Computed Tomography, Comparative Study With Optical Coherence Tomography

      Background: Acute coronary syndrome is commonly caused by disruption of vulnerable plaque that is characterized by thin fibrous cap (<65 µm) and large lipid pool. Noninvasive detection of vulnerable plaque using multislice computed tomography (MSCT) could be useful for risk stratification in patients with coronary artery disease. The purpose of this study is to investigate the possibility of MSCT to detect a thin-capped fibroatheroma (TCFA) by comparing the optical coherence tomography (OCT) findings. Methods and results: From January 2008 to March 2009, 77 lesions (19 unstable angina pectoris (uAP) culprit, 19 uAP non-culprit and 39 stable angina pectoris) in 43 ...
      Read Full Article
    1-8 of 8
  1. Categories

    1. Applications:

      Art, Cardiology, Dentistry, Dermatology, Developmental Biology, Gastroenterology, Gynecology, Microscopy, NDE/NDT, Neurology, Oncology, Ophthalmology, Other Non-Medical, Otolaryngology, Pulmonology, Urology
    2. Business News:

      Acquisition, Clinical Trials, Funding, Other Business News, Partnership, Patents
    3. Technology:

      Broadband Sources, Probes, Tunable Sources
    4. Miscellaneous:

      Jobs & Studentships, Student Theses, Textbooks
  2. Topics in the News

    1. (8 articles) Toyohashi Heart Center
    2. (8 articles) Masashi Kimura
    3. (8 articles) Mitsuyasu Terashima
    4. (8 articles) Takahiko Suzuki
    5. (7 articles) Etsuo Tsuchikane
    6. (7 articles) Nobuyoshi Tanaka
    7. (7 articles) Yoshihisa Kinoshita
    8. (7 articles) Maoto Habara
    9. (6 articles) Tsuyoshi Ito
    10. (5 articles) Osamu Katoh
  3. Popular Articles

  4. Picture Gallery

    Different Patterns of Vascular Response Between Patients With or Without Diabetes Mellitus After Drug-Eluting Stent Implantation: Optical Coherence Tomographic Analysis Comparison of In Vivo Assessment of Vulnerable Plaque by 64-Slice Multislice Computed Tomography Versus Optical Coherence Tomography Difference of Tissue Characteristics Between Early and Very Late Restenosis Lesions After Bare-Metal Stent Implantation: An Optical Coherence Tomography Study The impact of epicardial fat volume on coronary plaque vulnerability: insight from optical coherence tomography analysis Impact of Frequency-Domain Optical Coherence Tomography Guidance for Optimal Coronary Stent Implantation in Comparison With Intravascular Ultrasound Guidance Response to Letter Regarding Article, "Impact of Frequency-Domain Optical Coherence Tomography Guidance for Optimal Coronary Stent Implantation in Comparison With Intravascular Ultrasound Guidance" Notal Vision Engages Wasatch Photonics Bringing AI-Enabled Home-Based Optical Coherence Tomography Closer to Market Semiconductor Lasers and Diode-based Light Sources for Biophotonics (Textbook) Inside the “Razor Effect”: Lessons From Optical Coherence Tomography—What Does Angiography Hide? Imaging the Human Prostate Gland Using 1-μm-Resolution Optical Coherence Tomography In Vivo and Ex Vivo Microscopy: Moving Toward the Integration of Optical Imaging Technologies Into Pathology Practice Recognition of calcified neoatherosclerosis