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1. Mentioned In 154 Articles
2. NIRS-IVUS for Differentiating Coronary Plaque Rupture, Erosion and Calcified Nodule in Acute Myocardial Infarction
  
  Explore ScienceDirect Nov 23 2020 Cardiology
  
  Objectives This study sought to investigate the ability of combined near-infrared spectroscopy and intravascular ultrasound (NIRS-IVUS) to differentiate plaque rupture (PR), plaque erosion (PE), or calcified nodule (CN) in acute myocardial infarction (AMI). Background Most acute coronary syndromes occur from coronary thrombosis based on PR, PE, or CN. In vivo differentiation among PR, PE, and CN is a major challenge for intravascular imaging. Methods The study enrolled 244 patients with ...
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  Mentions: Wakayama Medical University Takashi Kubo Yoshiki Matsuo
3. Supporting evidence for ST-segment elevation myocardial infarction from optical coherence tomography
  
  Explore eurointervention.pcronline.com Nov 17 2020 Cardiology
  
  A 56-year-old male with current smoking and dyslipidemia was admitted to our hospital because of anterior ST-segment elevation myocardial infarction (STEMI). Echocardiogram showed akinesis in the apex of the left ventricle, and the ejection fraction was 55%. There was no evidence of atrial fibrillation, cardiac shunts or any cardiac thrombus. He had no history of the emotional stress, cocaine intake or thrombophilia. And, also there was no episode that suspected ...
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  Mentions: Wakayama Medical University Takashi Akasaka Yuichi Ozaki
4. Comparison of Optical Flow Ratio and Fractional Flow Ratio in Stent-Treated Arteries Immediately After Percutaneous Coronary Intervention
  
  Explore jstage.jst.go.jp Oct 31 2020 Cardiology
  
  Background: Optical flow ratio (OFR) is a recently developed method for functional assessment of coronary artery disease based on computational fluid dynamics of vascular anatomical data from intravascular optical coherence tomography (OCT). The purpose of this study was to investigate the relationship between OFR and fractional flow reserve (FFR) in stent-treated arteries immediately after percutaneous coronary intervention (PCI). Methods and Results: The OFR and FFR were measured in 103 coronary ...
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  Mentions: Wakayama Medical University Takashi Kubo Atsushi Tanaka
5. OPtical Coherence Tomography Guided Coronary Stent IMplantation Compared to Angiography: A Multicenter Randomized TriaL in PCI
  
  Explore eurointervention.pcronline.com Sep 5 2020 Cardiology
  
  AIMS: Randomized trials have demonstrated improvement in clinical outcomes with intravascular ultrasound (IVUS)-guided percutaneous coronary intervention (PCI) compared with angiography-guided PCI. The ILUMIEN III trial demonstrated non-inferiority of an optical coherence tomography (OCT)- versus IVUS-guided PCI strategy in achieving similar post-PCI lumen dimensions. ILUMIEN IV is a large-scale, multicenter, randomized trial designed to demonstrate the superiority of OCT- versus angiography-guided stent implantation in patients with high-risk clinical characteristics (diabetes ...
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  Mentions: Columbia University Mount Sinai School of Medicine Cardiovascular Research Foundation
6. Bandwidth enhancement in an InGaN/GaN three-section superluminescent diode for optical coherence tomography
  
  Explore aip.scitation.org Aug 18 2020 Broadband Sources
  
  In this paper, the optoelectronic properties of InGaN-based blue (430nm) superluminescent light-emitting diodes with a multi-section, three contact design are reported. The bias conditions of the rear absorber section and gain sections are explored in terms of enhancing and maximizing spectral bandwidth. We demonstrate that broader emission can be obtained with a short circuit, rather than an open circuit absorber section, and with two active regions at different current densities ...
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  Mentions: University of Sheffield Wakayama Medical University Richard A. Hogg
7. Outcomes of Optical Coherence Tomography Compared With Intravascular Ultrasound and With Angiography to Guide Coronary Stent Implantation: One-Year Results from the ILUMIEN III: OPTIMIZE PCI trial
  
  Explore eurointervention.pcronline.com Jun 19 2020 Cardiology
  
  Aims: In the ILUMIEN III trial, among 450 randomised patients with non-complex lesions undergoing percutaneous coronary intervention (PCI), optical coherence tomography (OCT) guidance led to greater stent expansion than angiography guidance, similar minimal stent area compared to both intravascular ultrasound (IVUS) guidance and angiography guidance, and lower rates of uncorrected dissection and malapposition than both IVUS guidance and angiography guidance. Whether these differences impact clinical outcomes is unknown. Methods and ...
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  Mentions: Columbia University Cardiovascular Research Foundation Gary S. Mintz
8. Optical Coherence Tomography Comparison of Percutaneous Coronary Intervention Among Plaque Rupture, Erosion, and Calcified Nodule in Acute Myocardial Infarction
  
  Explore jstage.jst.go.jp Apr 21 2020 Cardiology
  
  Background: Acute myocardial infarction (AMI) is caused by coronary plaque rupture (PR), plaque erosion (PE), or calcified nodule (CN). We used optical coherence tomography (OCT) to compare stent expansion immediately after primary percutaneous coronary intervention (PCI) in patients with AMI caused by PR, PE, or CN. Methods and Results: In all, 288 AMI patients were assessed by OCT before and immediately after PCI, performed with OCT guidance according to OPINION ...
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  Mentions: Wakayama Medical University Takashi Kubo Yoshiki Matsuo
9. Extent of the difference between microcatheter and pressure wire-derived fractional flow reserve and its relation to optical coherence tomography-derived parameters
  
  Explore ScienceDirect Mar 17 2020 Cardiology
  
  $Extent of the difference between microcatheter and pressure wire-derived fractional flow reserve and its relation to optical coherence tomography-derived parameters$
  Background Although previous studies demonstrated that microcatheter-derived fractional flow reserve (mc-FFR) tends to overestimate lesion severity compared to pressure wire-derived FFR (pw-FFR), the clinical utility of mc-FFR remains obscure. The extent of differences between the two FFR systems and its relation to a lesion-specific parameter remain unknown. In this study, we sought to compare mc-FFR with pw-FFR and determine the lower and upper mc-FFR cut-offs predicting ischemic and non-ischemic stenosis ...
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  Mentions: Wakayama Medical University Takashi Kubo Akio Kuroi
10. Comparison of Diagnostic Performance of Intracoronary Optical Coherence Tomography-based and Angiography-based Fractional Flow Reserve for Evaluation of Coronary Stenosis
  
  Explore eurointervention.pcronline.com Jan 23 2020 Cardiology
  
  Aims: To evaluate the diagnostic performance of OCT-based optical flow ratio (OFR) in unselected patients and compare it with angiography-based quantitative flow ratio (QFR), using wire-based FFR as reference standard. Methods and results: All patients with OCT and FFR assessment prior to revascularization were analyzed. OFR and QFR were computed in blinded fashion and compared with FFR, all applying same cut-off value of 0.80 to define ischemia. Paired comparison ...
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  Mentions: Wakayama Medical University Takashi Kubo Takashi Akasaka
11. A Local Multi-Layer Model for Tissue Classification of in-vivo Atherosclerotic Plaques in Intravascular Optical Coherence Tomography
  
  Explore jstage.jst.go.jp Nov 5 2019 Cardiology
  
  Clinical researches show that the morbidity of coronary artery disease (CAD) is gradually increasing in many countries every year, and it causes hundreds of thousands of people all over the world dying for each year. As the optical coherence tomography with high resolution and better contrast applied to the lesion tissue investigation of human vessel, many more micro-structures of the vessel could be easily and clearly visible to doctors, which ...
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  Mentions: Wakayama Medical University Takashi Kubo Takashi Akasaka
12. Automatic fibroatheroma identification in intravascular optical coherence tomography volumes
  
  Explore Home - Springer Oct 24 2019 Cardiology
  
  Coronary heart disease is the most common type of heart disease that leads to heart attacks. The identification of vulnerable plaques, especially the thin-cap fibroatheroma (TCFA), is crucial to the diagnosis of coronary artery disease. Intravascular optical coherence tomography (IVOCT), an emerging imaging modality, has been proven to be useful for the identification of vulnerable plaques. In this work, we propose an approach to identify the volumes with fibroatheroma frames ...
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  Mentions: National University of Singapore Wakayama Medical University Chinese Academy of Sciences
13. Expert consensus statement for quantitative measurement and morphological assessment of optical coherence tomography
  
  Explore Home - Springer Oct 15 2019 Cardiology
  
  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
14. Intracoronary pressure increase due to contrast injection for optical coherence tomography imaging
  
  Explore ScienceDirect Sep 10 2019 Cardiology
  
  Background Optical coherence tomography (OCT) requires intracoronary injection of contrast media to remove blood from the field of view during image acquisition. Contrast injection may cause a temporal increase in intracoronary pressure. The aim of this study was to compare the intracoronary pressure during contrast injection between OCT and coronary angiography . Methods We measured intracoronary pressure by using a pressure guidewire during contrast injection for OCT and angiography in 30 ...
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  Mentions: Wakayama Medical University Takashi Kubo Hironori Kitabata
15. Clinical use of intracoronary imaging. Part 2: acute coronary syndromes, ambiguous coronary angiography findings, and guiding interventional decision-making: an expert consensus document of the European Association of Percutaneous Cardiovascular Intervent
  
  Explore eurointervention.pcronline.com Sep 4 2019 Cardiology
  
  This consensus document is the second of two reports summarizing the views of an expert panel organized by the European Association of Percutaneous Cardiovascular Interventions (EAPCI) on the clinical use of intracoronary imaging including intravascular ultrasound (IVUS), optical coherence tomography (OCT), and near infrared spectroscopy (NIRS)-IVUS. Beyond guidance of stent selection and optimization of deployment, invasive imaging facilitates angiographic interpretation and may guide treatment in acute coronary syndrome. Intravascular ...
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  Mentions: Imperial College London Columbia University Cardiovascular Research Foundation
16. Early and mid-term vascular responses to optical coherence tomography guided everolimus-eluting stent implantation in stable coronary artery disease
  
  Explore Canadian Journal of Cardiology Aug 8 2019 Cardiology
  
  Background Analysis of pooled clinical data has shown the safety of 3 months of dual antiplatelet therapy (DAPT) with everolimus-eluting cobaltchromium stents (Co-Cr EESs). This study evaluated early and mid-term vascular responses to Co-Cr EESs in patients with stable coronary artery disease (CAD). Methods The MECHANISM-Elective trial (NCT02014818) is a multicenter optical coherence tomography (OCT) registry. Enrolled patients were evaluated by OCT immediately after EES implantation (post), were prospectively allocated ...
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  Mentions: Wakayama Medical University Takashi Kubo Takashi Akasaka
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