Παρακαλώ χρησιμοποιήστε αυτό το αναγνωριστικό για να παραπέμψετε ή να δημιουργήσετε σύνδεσμο προς αυτό το τεκμήριο:
https://hdl.handle.net/20.500.14279/1565
Τίτλος: | Evaluation of in-stent stenosis by magnetic resonance phase-velocity mapping in nickel-titanium stents | Συγγραφείς: | Holton, Andrea D. Walsh, Edward G. Anayiotos, Andreas |
metadata.dc.contributor.other: | Αναγιωτός, Ανδρέας | Major Field of Science: | Engineering and Technology | Field Category: | ENGINEERING AND TECHNOLOGY | Λέξεις-κλειδιά: | Hemodynamics;Titanium;Nickel;Carotid artery;Geometry | Ημερομηνία Έκδοσης: | 18-Ιου-2005 | Πηγή: | Journal of Magnetic Resonance Imaging, 2005, vol. 22, no. 2, pp. 248-257 | Volume: | 22 | Issue: | 2 | Start page: | 248 | End page: | 257 | Περιοδικό: | Journal of Magnetic Resonance Imaging | Περίληψη: | Purpose: To evaluate different grades of in-stent stenosis in a nickel-titanium stent with MRI. Materials and Methods: Magnetic resonance phase velocity mapping (MR-PVM) was used to measure flow velocity through a 9-mm NiTi stent with three different degrees of stenosis in a phantom study. The tested stenotic geometries were 1) axisymmetric 75%. 2) axisymmetric 90%, and 3) asymmetric 50%. The MR-PVM data were subsequently compared with the velocities from computational fluid dynamic (CFD) simulations of identical conditions. Results: Good quantitative agreement in velocity distribution for the 50% and 75% stenoses was observed. The agreement was poor for the 90% stenosis, most likely due to turbulence and the high-velocity gradients found in the small luminal area relative to the pixel resolution in our imaging settings. Conclusion: The accuracy of the MRI velocities inside the stented area renders MRI a modality that may be used to assess moderate to severe in-stent restenosis (ISR) in medium-sized vascular stents in peripheral vessels, such as the iliac, carotid, and femoral arteries. Advances in MR instrumentation may provide sufficient resolution to obtain adequate velocity information from smaller vessels, such as the coronary arteries, and allow MRI to substitute for invasive and expensive catheterization procedures currently in clinical use. | URI: | https://hdl.handle.net/20.500.14279/1565 | ISSN: | 10531807 | DOI: | 10.1002/jmri.20380 | Rights: | © Wiley-Liss Attribution-NonCommercial-NoDerivs 3.0 United States |
Type: | Article | Affiliation: | University of Alabama at Birmingham | Affiliation: | University of Alabama at Birmingham | Publication Type: | Peer Reviewed |
Εμφανίζεται στις συλλογές: | Άρθρα/Articles |
CORE Recommender
SCOPUSTM
Citations
16
checked on 9 Νοε 2023
WEB OF SCIENCETM
Citations
15
Last Week
0
0
Last month
0
0
checked on 1 Νοε 2023
Page view(s)
509
Last Week
1
1
Last month
30
30
checked on 13 Μαρ 2025
Google ScholarTM
Check
Altmetric
Αυτό το τεκμήριο προστατεύεται από άδεια Άδεια Creative Commons