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Wakayama Medical University
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Mentioned In 133 Articles
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Serial 3-Dimensional Optical Coherence Tomography Assessment of Jailed Side-Branch by Second-Generation Drug-Eluting Absorbable Metal Scaffold (From the BIOSOLVE-II Trial)
Second-generation drug-eluting absorbable metal scaffold (DREAMS 2G) is used for treating coronary lesions. However, the natural history of the jailed side-branch (SB) after DREAMS 2G implantation remains to be elucidated. The aim of this study is to investigate the effect of scaffold struts on jailed SBs as assessed by 3-dimensional (3D) optical coherence tomography (OCT) after implantation of DREAMS 2G. We enrolled the patients who received a DREAMS 2G implantation ...Read Full Article -
Illuminating the optimal anastomosis site with optical coherence tomography in coronary artery bypass surgery
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New Volumetric Analysis Method for Stent Expansion and its Correlation With Final Fractional Flow Reserve and Clinical Outcome An ILUMIEN I Substudy
Download figure Open in new tab Download powerpoint Abstract Objectives This study sought to compare conventional methodology (CM) with a newly described optical coherence tomography (OCT)-derived volumetric stent expansion analysis in terms of fractional flow reserve (FFR)-derived physiology and device-oriented composite endpoints (DoCE). Background The analysis of coronary stent expansion with intracoronary imaging has used CM that relies on the analysis of selected single cross-sections for several decades ...Read Full Article -
Late clinical outcome of suboptimal stent implantation defined by intracoronary optical coherence tomography
Optical coherence tomography (OCT) is an intravascular imaging technique that provides high-resolution (10-20 m) images. During percutaneous coronary intervention (PCI), OCT offers useful information to guide treatment strategies and assess optimal stent implantation (Figure 1) . However, OCT remains markedly underused in the real world. For further integration of OCT into clinical practice, it is necessary to accumulate evidence showing that OCT has a beneficial impact on the outcomes of PCI ...Read Full Article -
In vivo optical coherence tomography imaging and histopathology of healed coronary plaques
Background and aims The aims of this study were to assess agreement between optical coherence tomography (OCT) and histopathology for healed coronary plaques (HCPs) in human coronary arteries ex vivo , and to evaluate the prevalence and characteristics of HCPs in vivo . Methods Ex vivo OCT images were co-registered with histopathology in 144 cross-sections with 50% stenosis. Of these, 30 randomly selected pairs were employed to define morphological features of OCT ...Read Full Article -
The role of optical coherence tomography in the setting of acute myocardial infarction
In recent years, intravascular imaging-guided percutaneous coronary intervention (PCI) has been increasing in patients with acute myocardial infarction (AMI). However, the role of optical coherence tomography (OCT) has not been established in the setting of AMI despite OCT providing superior resolution (10 m axial resolution) and facilitating assessment of baseline lesion characteristics and post-intervention evaluation of the acute result of stent implantation, including visualization of procedural dissections, malapposition, tissue prolapse ...Read Full Article -
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 ...Read Full Article -
Clinical Utility of Combined Optical Coherence Tomography and Near-Infrared Spectroscopy for Assessing the Mechanism of Very Late Stent Thrombosis
Very late stent thrombosis (VLST) is a quite rare but serious complication that often results in myocardial infarction or cardiac death.Read Full Article -
Growth of quantum three-dimensional structure of InGaAs emitting at ~1 µm applicable for a broadband near-infrared light source
We obtained a high-intensity and broadband emission centered at ~1 m from InGaAs quantum three-dimensional (3D) structures grown on a GaAs substrate using molecular beam epitaxy. An InGaAs thin layer grown on GaAs with a thickness close to the critical layer thickness is normally affected by strain as a result of the lattice mismatch and introduced misfit dislocations. However, under certain growth conditions for the In concentration and growth temperature ...Read Full Article -
OPtical Frequency Domain Imaging Versus INtravascular Ultrasound in Percutaneous Coronary InterventiON - OPINION Imaging
This study is the sub-study of OPINION Trial. (UMIN000010580) The aim of this study is to evaluate how Optical frequency domain imaging (OFDI) or Intravascular Ultrasound (IVUS) imaging technology influence to the Percutaneous Coronary Intervention (PCI) strategy. Optical frequency domain imaging (OFDI) is a novel, high resolution intravascular imaging modality. Intravascular ultrasound (IVUS) is a widely used conventional imaging modality for achieving optimal stent deployment. This study is the sub-study ...Read Full Article -
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 ...Read Full Article -
Effect of Early Pitavastatin Therapy on Coronary Fibrous-Cap Thickness Assessed by Optical Coherence Tomography in Patients With Acute Coronary Syndrome : The ESCORT Study
Objectives The aim of the present study was to assess the effect of early statin therapy on fibrous-cap thickness in coronary plaques of patients with acute coronary syndrome (ACS) by using optical coherence tomography. Background Statins can contribute to the stabilization of coronary plaques. Methods This is a prospective, randomized, active-controlled, single-center study. Patients with ACS and untreated dyslipidemia were enrolled and randomly allocated (ratio 1:1) to either the ...Read Full Article -
Refractive index tomography based on optical coherence tomography and tomographic reconstruction algorithm
Refractive index (RI) tomography based on not quantitative phase imaging (QPI) but optical coherence tomography (OCT) is proposed. In conventional RI tomography, the phase unwrapping process deteriorates measurement accuracy owing to the unwrapping error. To eliminate the unwrapping process, the introduction of OCT is proposed, because OCT directly provides optical thickness. The proposed method can improve measurement accuracy owing to the removal of the phase unwrapping error. The feasibility of ...Read Full ArticleMentions: Wakayama Medical University -
Optical frequency domain imaging vs. intravascular ultrasound in percutaneous coronary intervention (OPINION trial): one-year angiographic and clinical results
...ial online, Appendix). An independent data and safety monitoring committee monitored the safety of the trial. Wakayama Medical University (Wakayama, Japan), one of the clinical sites, undertook co-ordination of this tria...Read Full Article
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About Wakayama Medical University
Wakayama Medical University is a public university in Wakayama, Wakayama, Japan. The predecessor of the school was founded in 1945, and it was chartered as a university in 1948.