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https://hdl.handle.net/20.500.14279/2451| Title: | Non-circular orifice flowfields in valvular regurgitation | Authors: | Green, Derek W. Myers, Jerry G. Anayiotos, Andreas |
metadata.dc.contributor.other: | Αναγιωτός, Ανδρέας | Keywords: | Biomechanics;Flow meters;Holes | Issue Date: | 1995 | Source: | ASME International Mechanical Congress and Exposition, 1995, San Francisco, United States | Abstract: | The proximal flowfield (PFF) is a primary tool in quantifying valvular regurgitation when using Color Doppler Ultrasound (CDU) in-vivo. Regurgitant flow calculations are made using the proximal isovelocity surface area (PISA) method and the aliasing technique such that flow rate = V alias*(PISA). However, the actual PFF in non-circular orifices has not been extensively validated. In this study, the PFFs for circular and non-circular orifices are compared in-vitro by Laser Doppler Velocimetry (LDV) and CDU. This comparison defines the details of the PFF, and may prove useful in quantifying valvular regurgitation independent of orifice shape. | Rights: | © ASME | Type: | Conference Papers | Affiliation: | University of Alabama at Birmingham |
| Appears in Collections: | Δημοσιεύσεις σε συνέδρια /Conference papers or poster or presentation |
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