1. Articles from Zhigang Han

    1-5 of 5
    1. Impact of Age on Stent Strut Coverage and Neointimal Remodeling as Assessed by Optical Coherence Tomography

      Impact of Age on Stent Strut Coverage and Neointimal Remodeling as Assessed by Optical Coherence Tomography

      Abstract: While older age associates with adverse percutaneous coronary intervention (PCI) outcomes, detailed information relating age to stent strut coverage and neointimal characteristics is lacking. One hundred nineteen patients with 123 sirolimus-eluting stents (SESs) were divided into 3 groups: group A (≤55 years), group B (56–65 years), and group C (>65 years). At 6 and 12 months of follow-up, optical coherence tomography was performed to assess strut coverage and neointimal remodeling. At 6 months, the proportion of uncovered struts increased with age: 6.1% in group A versus 7.3% in group B versus 11.7% in group C ...

      Read Full Article
    2. Optical Coherence Tomographic Observations of Polytetrafluoroethylene-Covered Sirolimus-Eluting Coronary Arterial Stent

      Optical Coherence Tomographic Observations of Polytetrafluoroethylene-Covered Sirolimus-Eluting Coronary Arterial Stent

      The aim of this study was to evaluate neointimal coverage obtained using a new method of polytetrafluoroethylene-covered stent (PCS) implantation combined with underlying longer sirolimus-eluting stent (SES) implantation using optical coherence tomography. Nine patients were enrolled in this study, including patients with coronary artery perforations, original coronary aneurysms, and acquired coronary aneurysms after drug-eluting stent implantation. All patients were first treated with long SES implantation and then with focal PCS implantation. Postprocedural and follow-up angiographic and optical coherence tomographic examinations were performed in all patients, and intravascular ultrasound was performed in 5 patients. All patients were asymptomatic during follow-up, without ...

      Read Full Article
    3. Neointimal tissue characteristics following sirolimus-eluting stent implantation: OCT quantitative tissue property analysis

      Neointimal tissue characteristics following sirolimus-eluting stent implantation: OCT quantitative tissue property analysis

      The neointimal tissue characteristics inside sirolimus-eluting stent (SES) were evaluated by optical coherence tomography (OCT) according to follow-up duration. One hundred and thirty-three Optical coherence tomography was performed in 96 patients with 143 SES which were retrospectively included and divided into 2 groups according to follow-up duration: Group 1, 24 months (35 stents in 25 patients). The neointimal tissue coverage pattern and characteristics were studied using a new OCT analysis system which can quantitatively analyze tissue property by measuring attenuation, backscatter and signal intensity in the region of interest. Using these parameters, a multivariable logistic regression model was constructed to ...

      Read Full Article
    4. Development of lipid-rich plaque inside bare metal stent: possible mechanism of late stent thrombosis? An optical coherence tomography study

      Development of lipid-rich plaque inside bare metal stent: possible mechanism of late stent thrombosis? An optical coherence tomography study

      Aims To study in-stent tissue characteristics by optical coherence tomography (OCT) at long-term follow-up in patients with previous bare metal stent implantation. Methods and results Among 1636 patients who underwent bare metal stent (BMS) implantation between 1999 and 2006, 39 patients with 60 BMS who developed recurrent ischaemia underwent repeat catheterisation and OCT imaging between June 2008 and August 2009. The average time interval between initial BMS implantation and OCT imaging was 6.5±1.3 years. A lesion that had features of lipid-rich plaque was found in 20 stents (33.3%) in 16 patients (41%). Fibrous intima was observed ...

      Read Full Article
    5. Pulmonary Vascular Changes in Pulmonary Hypertension: Optical Coherence Tomography Findings

      Pulmonary Vascular Changes in Pulmonary Hypertension: Optical Coherence Tomography Findings

      A 25-year-old man presented with a 3-month history of recurrent syncope, exertional chest discomfort, and shortness of breath. On physical examination, he had right ventricular heave, loud P2, jugular venous distension, tricuspid regurgitation murmur, and lower extremity edema. D-dimer was negative. Echocardiography showed right ventricular hypertrophy with elevated right ventricular pressure. Left ventricular function was normal. Cardiac catheterization showed pulmonary artery pressure of 131/50/78 mm Hg (concurrent aortic pressure was 145/80 mm Hg). Pulmonary wedge pressure was 15 mm Hg. Pulmonary angiography showed dilation of the main pulmonary artery with peripheral tapering (Figure 1). After pulmonary angiography ...

      Read Full Article
    1-5 of 5
  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. (5 articles) Harbin Medical University
    2. (5 articles) Jingbo Hou
    3. (5 articles) Bo Yu
    4. (5 articles) St. Jude Medical
    5. (4 articles) Harvard University
    6. (4 articles) Massachusetts General Hospital
    7. (4 articles) Ik-Kyung Jang
    8. (4 articles) Shaosong Zhang
    9. (2 articles) Haibo Jia
    10. (1 articles) Boston Scientific
    11. (1 articles) University of Pittsburgh
    12. (1 articles) ESPCI ParisTech
    13. (1 articles) University of Toronto
    14. (1 articles) Felix I. Feldchtein
    15. (1 articles) Mathias Fink
    16. (1 articles) Claude Boccara
    17. (1 articles) I. Alex Vitkin
    18. (1 articles) Egidijus Auksorius
    19. (1 articles) Kate Grieve
    20. (1 articles) Maciej Wojtkowski
  3. Popular Articles

  4. Picture Gallery

    Pulmonary Vascular Changes in Pulmonary Hypertension: Optical Coherence Tomography Findings Development of lipid-rich plaque inside bare metal stent: possible mechanism of late stent thrombosis? An optical coherence tomography study Neointimal tissue characteristics following sirolimus-eluting stent implantation: OCT quantitative tissue property analysis Optical Coherence Tomographic Observations of Polytetrafluoroethylene-Covered Sirolimus-Eluting Coronary Arterial Stent Impact of Age on Stent Strut Coverage and Neointimal Remodeling as Assessed by Optical Coherence Tomography Changes in the OCT angiographic appearance of type 1 and type 2 CNV in exudative AMD during anti-VEGF treatment Optical coherence angiography for pre-treatment assessment and treatment monitoring following photodynamic therapy: a basal cell carcinoma patient study Computational aberration correction in spatiotemporal optical coherence (STOC) imaging A rare entity: Sympathetic ophthalmia presumably after blunt trauma to the phthisical eye and optical coherence tomography angiography metrics to monitor response to treatment Mechanism of fluid leak in non-traumatic corneal perforations: an anterior segment optical coherence tomography study Repeatability of ocular surface vessel density measurements with optical coherence tomography angiography Spatiotemporal dynamics of pial collateral blood flow following permanent middle cerebral artery occlusion in a rat model of sensory-based protection: a Doppler optical coherence tomography study