1. Tsunekazu Kakuta

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    1. Mentioned In 24 Articles

    2. Optical Coherence Tomography–Defined Plaque Vulnerability in Relation to Functional Stenosis Severity and Microvascular Dysfunction

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      Optical Coherence Tomography–Defined Plaque Vulnerability in Relation to Functional Stenosis Severity and Microvascular Dysfunction
      Objectives This study sought to investigate the relationship of unstable plaque features with physiological lesion severity and microvascular dysfunction . Background The functional severity of epicardial lesions and microvascular dysfunction are both related to adverse clinical outcomes. Methods We investigated 382 de novo intermediate and severe coronary lesions in 340 patients who underwent optical coherence tomography , fractional flow reserve (FFR), and index of microcirculatory resistance (IMR) examinations. Lesions were divided into ...
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      Mentions: Tokyo Medical & Dental University Tsunekazu Kakuta Tetsumin Lee

    4. Multimodality coronary imaging to predict periprocedural myocardial necrosis after an elective percutaneous coronary intervention

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      Multimodality coronary imaging to predict periprocedural myocardial necrosis after an elective percutaneous coronary intervention
      Background Although multiple imaging modalities have been tested to predict periprocedural myocardial necrosis (PMN), the superior predictive efficacy of these imaging findings has not been established fully. We sought to evaluate which findings of the coronary imaging tools would best provide predictive efficacy of PMN among optical coherence tomography (OCT), intravascular ultrasound (IVUS), and coronary computed tomography (CCT) angiography. Patients and methods A total of 130 patients with stable angina ...
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      Mentions: Tsunekazu Kakuta Tetsumin Lee Taishi Yonetsu

    5. Relationship between optical coherence tomography-derived morphological criteria and functional relevance as determined by fractional flow reserve

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      Relationship between optical coherence tomography-derived morphological criteria and functional relevance as determined by fractional flow reserve
      Background Although several previous studies have indicated that optical coherence tomography (OCT)-derived minimal lumen area (MLA) correlates with fractional flow reserve (FFR) severity, other morphologic criteria for functionally significant coronary stenosis assessed by FFR have not been fully elucidated. This study aimed to identify OCT-based morphological predictors of physiologically significant ischemia assessed by FFR in angiographically intermediate coronary lesions. Methods We investigated 194 de novo intermediate coronary lesions in ...
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      Mentions: Tsunekazu Kakuta Tetsumin Lee Taishi Yonetsu

    6. Impact of coronary plaque morphology assessed by optical coherence tomography on cardiac troponin elevation in patients with non-ST segment elevation acute coronary syndrome

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      Impact of coronary plaque morphology assessed by optical coherence tomography on cardiac troponin elevation in patients with non-ST segment elevation acute coronary syndrome
      Objectives This study aimed to use optical coherence tomography (OCT) to study the relationship between plaque morphology prior to percutaneous coronary intervention (PCI) and post-PCI cardiac troponin (cTn) elevations in patients with non-ST-segment elevation acute coronary syndrome (NSTE-ACS). Furthermore, the relationship between these findings and the adverse cardiac events during follow-up was assessed. Background Association between post-PCI cTn elevations and OCT findings in NSTE-ACS patients is unclear. Methods We evaluated ...
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      Mentions: Tsunekazu Kakuta Tetsumin Lee

    7. Coronary Plaque Characteristics in Hemodialysis-Dependent Patients as Assessed by Optical Coherence Tomography

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      Coronary Plaque Characteristics in Hemodialysis-Dependent Patients as Assessed by Optical Coherence Tomography
      Coronary arteries in patients with chronic kidney disease (CKD) have been shown to exhibit more extensive atherosclerosis and calcium. We aimed to assess characteristics of coronary plaque in hemodialysis (HD)-dependent patients using optical coherence tomography (OCT). This was a multicenter, retrospective study of 124 patients with stable angina who underwent OCT imaging. Sixty-two HD-dependent patients who underwent pre-intervention OCT for coronary artery disease (CAD) were compared 1:1 with ...
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      Mentions: Gary S. Mintz Gregg W. Stone Tsunekazu Kakuta

    8. Guidewire shadow artifacts in optical coherence tomography

      Explore Edizioni Minerva Medica Cardiology
      Guidewire shadow artifacts in optical coherence tomography
      BACKGROUND: Because of the high resolution made possible by optical coherence tomography (OCT), previously indistinguishable guidewire artifacts are recognized during coronary imaging, and these affect image interpretation. This study aimed to assess the effect of guidewire size and structure on the artifacts produced and to introduce a novel guidewire specifically for OCT imaging that produces fewer artifacts. Elimination or minimization of guidewire artifacts supports optimal OCT imaging. METHODS: Silicon tubes ...
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      Mentions: Tsunekazu Kakuta Tetsumin Lee

    9. Serial examinations of right coronary artery directly injured by radiofrequency catheter ablation with optical coherence tomography and intravascular ultrasound

      Explore Home - Springer Cardiology
      Serial examinations of right coronary artery directly injured by radiofrequency catheter ablation with optical coherence tomography and intravascular ultrasound
      A 42-year-old man was referred for ablation. The origin of VT was localized close to the right coronary ostium. During ablation, the catheter tip inadvertently fell into a RCA ostium. The patient developed chest discomfort and ST-segment elevation in the inferior leads was observed. Coronary angiography confirmed severe narrowing of the ostial RCA. Stenting was deferred after satisfactory dilatation by a balloon. The patient discharged with eventless clinical course afterward ...
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      Mentions: Tsunekazu Kakuta Tetsumin Lee

    10. Plaque morphologies and the clinical prognosis of acute coronary syndrome caused by lesions with intact fibrous cap diagnosed by optical coherence tomography

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      Plaque morphologies and the clinical prognosis of acute coronary syndrome caused by lesions with intact fibrous cap diagnosed by optical coherence tomography
      Background Pathological studies have suggested that acute coronary syndrome (ACS) may be caused by culprit lesions with intact fibrous cap (IFC), including plaque erosions. This study sought to evaluate the morphological features and clinical outcomes of patients with ACS caused by lesions with IFC. Methods A total of 318 patients with ACS who underwent optical coherence tomography (OCT) of a culprit lesion were investigated. The culprit lesions were categorized as ...
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      Mentions: Tsunekazu Kakuta Tetsumin Lee Taishi Yonetsu

    11. Relationship Between Subclinical Cardiac Troponin I Elevation and Culprit Lesion Characteristics Assessed by Optical Coherence Tomography in Patients Undergoing Elective Percutaneous Coronary Intervention

      Explore Circulation Cardiology
      Relationship Between Subclinical Cardiac Troponin I Elevation and Culprit Lesion Characteristics Assessed by Optical Coherence Tomography in Patients Undergoing Elective Percutaneous Coronary Intervention
      ...f Cardiovascular Medicine, Tokyo Medical and Dental University, Tokyo, Japan (M.I.). 1. Correspondence to Tsunekazu Kakuta, MD, Cardiovascular Medicine, Tsuchiura Kyodo General Hospital, 11–7, Manabeshin-machi, Tsuch...
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      Mentions: Tokyo Medical & Dental University Tsunekazu Kakuta Tetsumin Lee

    12. Feature Of The Week 8/4/13: MGH OCT Registry Reports on In Vivo OCT Studies of Plaque Erosion and Calcified Nodule In Acute Coronary Syndrome

      Explore Optical Coherence Tomography News Cardiology
      Feature Of The Week 8/4/13: MGH OCT Registry Reports on In Vivo OCT Studies of Plaque Erosion and Calcified Nodule In Acute Coronary Syndrome
      Pathology studies reported that three most common causes of acute coronary syndrome (ACS) or sudden cardiac death are plaque rupture, plaque erosion and calcified nodules. The morphological and clinical characteristics of the underlying pathology of ACS, especially plaque erosion and calcified nodule, have never been well studied in vivo. Using optical coherence tomography, we found that plaque erosions are the substrate for ACS in 31% of patients and calcified nodules ...
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      Mentions: University of Pittsburgh Massachusetts Institute of Technology Massachusetts General Hospital

    13. In Vivo Diagnosis of Plaque Erosion and Calcified Nodule in Patients with Acute Coronary Syndrome by Intravascular Optical Coherence Tomography

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      In Vivo Diagnosis of Plaque Erosion and Calcified Nodule in Patients with Acute Coronary Syndrome by Intravascular Optical Coherence Tomography
      Objectives To characterize the morphological features of plaque erosion and calcified nodule in patients with acute coronary syndrome (ACS) by optical coherence tomography (OCT). Background Plaque erosion and calcified nodule have not been systematically investigated in vivo . Methods One hundred and twenty-six patients with ACS who had undergone pre-intervention OCT imaging were included. The culprit lesions were classified as plaque rupture (PR), erosion (OCT-erosion), calcified nodule (OCT-CN), or others using ...
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      Mentions: University of Pittsburgh Massachusetts General Hospital Ik-Kyung Jang

    14. In vivo detection of lipid-rich plaque by using a 40-MHz intravascular ultrasound: a comparison with optical coherence tomography findings

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      In vivo detection of lipid-rich plaque by using a 40-MHz intravascular ultrasound: a comparison with optical coherence tomography findings
      iMAP has recently been introduced as a new tissue characterization method using the 40-MHz intravascular ultrasound (IVUS). However, few data have been published on the comparative findings of other imaging modalities in vivo. We examined 108 matched lesions from 70 patients (35 with stable angina and 35 with acute coronary syndrome) that underwent percutaneous coronary intervention (PCI) using pre-PCI OCT and IVUS. Identification of OCT-derived lipid-rich plaques and thin-cap fibroatheroma ...
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      Mentions: Tokyo Medical & Dental University Tsunekazu Kakuta Tetsumin Lee

    15. Comparison of Incidence and Time Course of Neoatherosclerosis Between Bare Metal Stents and Drug-Eluting Stents Using Optical Coherence Tomography

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      Comparison of Incidence and Time Course of Neoatherosclerosis Between Bare Metal Stents and Drug-Eluting Stents Using Optical Coherence Tomography
      ...ty, Key Laboratories of Education Ministry for Myocardial Ischemia Mechanism and Treatment, Harbin, China , * Tsunekazu Kakuta, MD, PhD Affiliations + Division of Cardiology, Tsuchiura Kyodo Hospital, Ibaraki, Japan , * ...
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      Mentions: Massachusetts General Hospital Ik-Kyung Jang Shaosong Zhang

    16. Impact of Coronary Plaque Morphology Assessed by Optical Coherence Tomography on Cardiac Troponin Elevation in Patients With Elective Stent Implantation

      Explore Circulation Cardiology
      Impact of Coronary Plaque Morphology Assessed by Optical Coherence Tomography on Cardiac Troponin Elevation in Patients With Elective Stent Implantation
      ...tment of Cardiovascular Medicine, Tokyo Medical and Dental University, Tokyo, Japan (M.I.). Correspondence to Tsunekazu Kakuta, MD, Department of Cardiology, Tsuchiura Kyodo General Hospital, 11-7, Manabeshin-machi, Tsuc...
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      Mentions: Tokyo Medical & Dental University Tsunekazu Kakuta Taishi Yonetsu
    17. 1-15 of 24 1 2 »
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  4. About Tsunekazu Kakuta

    Tsunekazu Kakuta is at Tsuchiura Kyodo General Hospital in Japan.

  5. Related Topics

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