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|Title:||Non-circular orifice flowfields in valvular regurgitation||Authors:||Green, Derek W.
Myers, Jerry G.
|Issue Date:||1995||Publisher:||ASME||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.||URI:||http://ktisis.cut.ac.cy/handle/10488/7562||Rights:||© ASME|
|Appears in Collections:||Δημοσιεύσεις σε συνέδρια/Conference papers|
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