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Title: Phase velocity mapping through a NiTi stent with different levels of stenosis
Authors: Holton, Andrea D. 
Venugopalan, Ramakrishna 
Anayiotos, Andreas 
Keywords: Cardiovascular system
Flow meters
Magnetic resonance imaging
Issue Date: 2003
Publisher: ASME
Source: ASME International Mechanical Engineering Congress, 2003, Washington, Olympia
Abstract: Magnetic Resonance Imaging has the potential to become the new gold standard in the management of cardiovascular disease, particularly in the assessment of arterial lesions and post-intervention restenosis. NiTi stents exhibit superior MRI compatibility and allow direct MR imaging through the stented area. In the present study, pulsatile in-vitro flow measurements were obtained by Magnetic Resonance Phase-Velocity mapping (MR-PVW) through a nickel-titanium alloy stent with different grades of stenosis: a) 75%, 90% (symmetric) and 50% (asymmetric). The results showed clear visibility of the lumen through the stent/stenosis when compared with independent calculations of flow. The detection and evaluation of instent restenosis using these techniques could provide a non-invasive means of screening for further management of patients.
ISSN: 10716947
Rights: © ASME
Appears in Collections:Δημοσιεύσεις σε συνέδρια/Conference papers

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