1. Articles from Satoshi Yasuda

    1-9 of 9
    1. In vivo tissue characterization of human atherosclerotic plaques by optical coherence tomography: A directional coronary atherectomy study with histopathologic confirmation

      In vivo tissue characterization of human atherosclerotic plaques by optical coherence tomography: A directional coronary atherectomy study with histopathologic confirmation

      Background The histopathological validation of optical coherence tomography (OCT) in visualizing atherosclerotic plaques has been reported only in ex vivo studies. We sought to evaluate the accuracy of OCT in tissue characterization in vivo . Methods and results A total of 25 patients with stable angina pectoris who underwent directional coronary atherectomy (DCA) were included in the investigation, whereby OCT was performed before and after a single debulking. The debulked region was determined on OCT and classified into fibrous tissue, lipid, calcification, thrombus, and macrophage accumulation, which were compared with histology. Changes in OCT signal intensity in the deeper intimal region ...

      Read Full Article
    2. Optical coherence tomography-verified morphological correlates of high-intensity coronary plaques on non-contrast T1-weighted magnetic resonance imaging in patients with stable coronary artery disease

      Optical coherence tomography-verified morphological correlates of high-intensity coronary plaques on non-contrast T1-weighted magnetic resonance imaging in patients with stable coronary artery disease

      Aims Coronary high-intensity plaques (HIPs) with a high plaque-to-myocardial signal intensity ratio (PMR) on non-contrast T1-weighted imaging in patients with stable coronary artery disease (CAD) are associated with future coronary events. To characterize the morphological substrate of HIP, we performed a correlative optical coherence tomography (OCT) study. Methods and results We examined 137 lesions in 105 patients with stable angina pectoris or silent myocardial ischaemia scheduled for percutaneous coronary intervention (PCI) using a 3 T magnetic resonance scanner. Pre-interventional OCT was performed for PCI target lesions. HIP was defined as PMR ≥ 1.4. Of the 137 lesions, 34% were HIP ...

      Read Full Article
      Mentions: Jagat Narula
    3. Neoatherosclerosis in the Iliac Artery Stent ― Insights From Optical Coherence Tomography and Intravascular Ultrasound ―

      Neoatherosclerosis in the Iliac Artery Stent ― Insights From Optical Coherence Tomography and Intravascular Ultrasound ―

      There has been increasing attention on neoatherosclerosis in coronary arteries following implantation of bare-metal and drug-eluting stents.1,2 Neoatherosclerosis might be a concern even in the field of peripheral artery disease (PAD). A 75-year-old man with hypertension, diabetes mellitus, dyslipidemia and a history of right iliac artery stenting with a Wallstent 12 years previously, was referred to hospital for treatment of recurrent/progressive intermittent claudication (Rutherford category 3) that had started 6 months earlier. Ankle brachial index (ABI) was 0.51 on the right. Diagnostic angiography showed significant in-stent restenosis in the right iliac artery stent (Figure A). Intravascular ...

      Read Full Article
    4. Two-year clinical, angiographic, and serial optical coherence tomographic follow-up after implantation of an everolimus-eluting bioresorbable scaffold and an everolimus-eluting metallic stent: insights from the randomised ABSORB Japan trial

      Two-year clinical, angiographic, and serial optical coherence tomographic follow-up after implantation of an everolimus-eluting bioresorbable scaffold and an everolimus-eluting metallic stent: insights from the randomised ABSORB Japan trial

      Aims: We sought to investigate two-year clinical and serial optical coherence tomography (OCT) outcomes after implantation of a fully bioresorbable vascular scaffold (BVS) or a cobalt-chromium everolimus-eluting stent (CoCr-EES). Methods and results: In the ABSORB Japan trial, 400 patients were randomised in a 2:1 ratio to BVS (N=266) or CoCr-EES (N=134). A pre-specified OCT subgroup (N=125, OCT-1 group) underwent angiography and OCT post procedure and at two years. Overall, the two-year TLF rates were 7.3% and 3.8% in the BVS and CoCr-EES arms (p=0.18), respectively. Very late scaffold thrombosis (VLST) beyond one ...

      Read Full Article
    5. Progression of Intimal Hyperplasia and Multiple-Channel Formation After Fogarty Thrombectomy Insight Into Vasculopathy From Optical Coherence Tomography and Intravascular Ultrasound Findings

      Progression of Intimal Hyperplasia and Multiple-Channel Formation After Fogarty Thrombectomy Insight Into Vasculopathy From Optical Coherence Tomography and Intravascular Ultrasound Findings

      Given the marked increase in the number of patients with atrial fibrillation (AF) (1) , more than 80% of acute limb ischemia (ALI) cases are now due to cardiac embolism associated with AF (2) . Fogarty thrombectomy is the gold standard treatment of ALI. An 87-year-old man with a chronic AF who underwent Fogarty thrombectomy for ALI due to cardiac embolism in his right leg 1 year earlier was hospitalized in our department for the treatment of right calf claudication ( Figures 1A and 1B ). His ankle-brachial index (ABI) was 0.69 on the right. Enhanced computed tomography (CT) revealed a severe focal ...

      Read Full Article
    1-9 of 9
  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. (1 articles) Tohoku University
    2. (1 articles) Toyohashi Heart Center
    3. (1 articles) Kumamoto University
    4. (1 articles) Erasmus University
    5. (1 articles) Patrick W. Serruys
    6. (1 articles) Gregg W. Stone
    7. (1 articles) Jagat Narula
    8. (1 articles) Yoshinobu Onuma
    9. (1 articles) Yukio Ozaki
    10. (1 articles) Richard Rapoza
  3. Popular Articles

  4. Picture Gallery

    Vascular Response to Bare Metal Stents in the Superficial Femoral Artery as Assessed on Optical Coherence Tomography Progression of Intimal Hyperplasia and Multiple-Channel Formation After Fogarty Thrombectomy Insight Into Vasculopathy From Optical Coherence Tomography and Intravascular Ultrasound Findings Progression of Intimal Hyperplasia and Multiple-Channel Formation After Fogarty Thrombectomy : Insight Into Vasculopathy From Optical Coherence Tomography and Intravascular Ultrasound Findings Two-year clinical, angiographic, and serial optical coherence tomographic follow-up after implantation of an everolimus-eluting bioresorbable scaffold and an everolimus-eluting metallic stent: insights from the randomised ABSORB Japan trial Neoatherosclerosis in the Iliac Artery Stent ― Insights From Optical Coherence Tomography and Intravascular Ultrasound ― Optical coherence tomography-verified morphological correlates of high-intensity coronary plaques on non-contrast T1-weighted magnetic resonance imaging in patients with stable coronary artery disease Marking Technique for Identification of Optimal Stent Landing Site With Optical Coherence Tomographic Imaging In vivo tissue characterization of human atherosclerotic plaques by optical coherence tomography: A directional coronary atherectomy study with histopathologic confirmation Plaque erosion or coronary artery embolism? Findings from clinical presentation, optical coherence tomographic and histopathological analysis in a case with acute coronary syndrome Perimeter Medical Imaging Closes Oversubscribed $C4.4M Financing Time-domain optical coherence tomography system based on moving-optical-wedge interferometer ML and AI: At the Forefront of Ophthalmology