1. Articles from Tomohiko Sakatani

    1-3 of 3
    1. The frequency and clinical characteristics of in-stent restenosis due to calcified nodule development after coronary stent implantation

      The frequency and clinical characteristics of in-stent restenosis due to calcified nodule development after coronary stent implantation

      The purpose of this study was to evaluated the clinical characteristics of calcified nodule-like in-stent restenosis (ISR) lesions using optical coherence tomography (OCT) in vivo. A total of 124 ISR lesions that were treated with a repeat coronary intervention under OCT guidance were included in this analysis. ISR neointimal morphology was classified as “calcified nodule-like ISR”, that appeared as a high-backscattering protruding mass with an irregular surface covered by signal-rich bands, or “non-calcified nodule-like ISR”. The maximum arc and thickness of calcium behind the stent struts was also measured. Of the 124 ISR lesions, calcified nodule-like ISR was observed in ...

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      Mentions: Kenichi Fujii
    2. Cholesterol crystal depth in coronary atherosclerotic plaques: A novel index of plaque vulnerability using optical frequency domain imaging

      Cholesterol crystal depth in coronary atherosclerotic plaques: A novel index of plaque vulnerability using optical frequency domain imaging

      Background The involvement of cholesterol crystals (CCs) in plaque progression and destabilization of atherosclerotic plaques has been recently recognized. This study aimed to evaluate the association between the intraplaque localization of CCs and plaque vulnerability. Methods We investigated 55 acute coronary syndrome (ACS) and 80 stable angina pectoris (stable AP) lesions using optical frequency domain imaging (OFDI) prior to percutaneous coronary intervention. The distance between CCs and the luminal surface of coronary plaques was defined as CC depth. Results Although the incidence of CCs had similar frequencies in the ACS and stable AP groups (95% vs. 89%, p = 0.25 ...

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    3. Optical Coherence Tomography (OCT) Findings of Coronary Computed Tomography Angiography (CTA) Detected Vulnerable Plaque

      Optical Coherence Tomography (OCT) Findings of Coronary Computed Tomography Angiography (CTA) Detected Vulnerable Plaque

      Background: Recently, coronary computed tomography angiography (CTA) findings of positive vessel remodeling (PR) and low-attenuation plaque (LAP) have been reported to be associated with the development of acute coronary syndromes (ACS). The aim of this study was to examine the CTA detected vulnerable plaque characteristics by using intracoronary optical coherence tomography (OCT). Method and Result: A total of 16 patients with 16 lesions underwent PCI by using intracoronary OCT, after coronary CTA examination, were enrolled in this study. The CTA detected vulnerable plaque (CT-VP) was defined as LAP (<30 hounsfield unit (HU)) with PR of at least 110%. The lesions ...

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    1-3 of 3
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    1. (1 articles) Kenichi Fujii
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    Optical Coherence Tomography (OCT) Findings of Coronary Computed Tomography Angiography (CTA) Detected Vulnerable Plaque Cholesterol crystal depth in coronary atherosclerotic plaques: A novel index of plaque vulnerability using optical frequency domain imaging The frequency and clinical characteristics of in-stent restenosis due to calcified nodule development after coronary stent implantation Both speckle reduction and contrast enhancement for optical coherence tomography via sequential optimization in the logarithmic domain based on a refined Retinex model OCT parameters of the optic nerve head and the retina as surrogate markers of brain volume in a normal population, a pilot study Choroidal vessel density in unilateral hyperopic amblyopia using en-face optical coherence tomography Association between food and nutrients intakes and coronary plaque vulnerability in patients with coronary heart disease: An optical coherence tomography study Optical Coherence Tomography based treatment approach for patients with Acute Coronary Syndrome Using OCT Fixation Shift to Assess Eccentric Fixation in Children With Residual Amblyopia Intraretinal microvascular changes after ERM and ILM peeling using SSOCTA Image sensor for spectral-domain optical coherence tomography on a chip Identifying Diabetic Macular Edema and Other Retinal Diseases by Optical Coherence Tomography Image and Multiscale Deep Learning