Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Fenestrated stent graft repair of abdominal aortic aneurysm: Hemodynamic analysis of effect of fenestrated stents on renal arteries

    133327_133327.pdf (3.160Mb)
    Access Status
    Open access
    Authors
    Sun, Zhonghua
    Chaichana, T.
    Date
    2010
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Sun, Zhonghua and Chaichana, Thanapong. 2010. Fenestrated stent graft repair of abdominal aortic aneurysm: Hemodynamic analysis of effect of fenestrated stents on renal arteries. Korean Journal of Radiology. 11 (1): pp. 95-106.
    Source Title
    Korean Journal of Radiology
    DOI
    10.3348/kjr.2010.11.1.95
    ISSN
    1229-6929
    Faculty
    School of Science and Computing
    Faculty of Science and Engineering
    Department of Imaging and Applied Physics
    Remarks

    The link to the journal's website is available at: http://kjronline.org

    URI
    http://hdl.handle.net/20.500.11937/29931
    Collection
    • Curtin Research Publications
    Abstract

    Purpose: To investigate the hemodynamic effect of fenestrated stents on renal arteries using a fluid structure interaction method. Materials and Methods: Two representative patients with abdominal aortic aneurysm treated with fenestrated stent grafts were selected in the study. 3D realistic aorta models for the main artery branches and aneurysm were generated based on multislice computed tomographic scans from 2 patients with different aortic geometries. The simulated fenestrated stents were designed and modelled based on 3D intraluminal appearance, and placed inside the renal artery to reflect the actual patients treatment with an intra-aortic protrusion of 5.0-7.0 mm. The stent wire thickness was simulated with a diameter of 0.4 mm and hemodynamic analysis was performed at different cardiac cycles. Results: Our results showed that the effect of fenestrated stent wires on renal blood flow was minimal as the flow velocity was not significantly affected when compared to that calculated at pre-stent graft implantation, despite presence of recirculation patterns at the proximal part of the renal arteries. Wall pressure was found to decrease significantly after fenestration, however, no significant change of wall shear stress was noticed post-fenestration, although it was shown to decrease slightly at the proximal aneurysm necks. Conclusion: Our analysis demonstrates that hemodynamic effect of fenestrated renal stents on renal arteries is insignificant. Further studies are needed to investigate the effect of different lengths of stent protrusion with variable stent thicknesses on renal blood flow, which is valuable for understanding the long-term outcomes of fenestrated repair.

    Related items

    Showing items related by title, author, creator and subject.

    • Effect of fenestrated stents on the renal arteries: Investigation of hemodynamic changes in abdominal aortic aneurysms treated with fenestrated endovascular grafts.
      Sun, Zhonghua; Chaichana, T.; Sangworasil, M.; Allen, Yvonne; Hartley, D.; Lawrence-Brown, M. (2008)
      This article uses a novel method of combining 3D image visualization and computational fluid dynamics to investigate the potential effect of fenestrated stents on the renal arteries in terms of blood flow pattern, flow ...
    • Investigation of hemodynamic changes in abdominal aortic aneurysms treated with fenestrated endovascular grafts
      Sun, Zhonghua; Chaichana, T.; Allen, Y.; Sangworasil, M.; Tungjitkusolmun, S.; Hartley, D.; Lawrence-Brown, Michael (2009)
      Fenestrated stent grafts are becoming widely used in clinical practice to treat patients with complicated aortic aneurysms, with short to mid-term satisfactory outcomes being achieved. However, long-term results are yet ...
    • Investigation of hemodynamic effect of stent wires on renal arteries in patients with abdominal aortic aneurysms treated with suprarenal stent grafts
      Sun, Zhonghua; Chaichana, T. (2009)
      The purpose of the study was to investigate the hemodynamic effect of stent struts (wires) on renal arteries in patients with abdominal aortic aneurysms (AAA) treated with suprarenal stent grafts. Two sample patients ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.