Abstract
The proximal isovelocity surface area (PISA) method has shown promise in the non-invasive assessment of mitral regurgitation. In this study, in-vitro steady flow studies were conducted to determine if the PISA method could be used to accurately estimate the regurgitant flow rate in the presence of complicating factors such as aortic outflow. By digitizing the color flow map, velocity information was obtained along the orifice centerline. These studies showed that the presence of aortic outflow caused isovelocity contours to merge with the aortic outflow for lower aliasing velocities, causing further overestimation in the regurgitant flow rate at large distances from the orifice, than for converging flows in the absence of aortic outflow. In addition, this study suggests that the digital flow map may be useful to quantify mitral regurgitation in the near future.
Original language | English |
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Title of host publication | American Society of Mechanical Engineers, Bioengineering Division (Publication) BED |
Publisher | ASME |
Pages | 273-274 |
Number of pages | 2 |
Volume | 28 |
Publication status | Published - 1994 |
Event | Proceedings of the 1994 International Mechanical Engineering Congress and Exposition - Chicago, IL, USA Duration: Nov 6 1994 → Nov 11 1994 |
Other
Other | Proceedings of the 1994 International Mechanical Engineering Congress and Exposition |
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City | Chicago, IL, USA |
Period | 11/6/94 → 11/11/94 |
ASJC Scopus subject areas
- Engineering(all)