| New method for quantitatively determining aortic regurgitant volume using Doppler color flow imaging: experimental validation study. | |
| | |
MedLine Citation:
|
PMID: 10147400 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
We have developed a method to provide the two-dimensional distribution of blood flow velocity and the blood flow volume rate in the ascending aorta from the cross-sectional Doppler color flow image. Regional blood flow velocities were determined by converting color intensities of the cross-sectional Doppler color flow image into the corresponding flow velocities with the correction with the spatial ultrasound beam incident angle. The spatial ultrasound beam incident angle was estimated from the geometric characteristics of the color flow image contour. The method was validated in a steady flow model circuit comparing the calculated flow volume rates by the method with those simultaneously measured by an electromagnetic flowmeter. We performed an open chest dog experiment and calculated the blood flow volume rate at the ascending aorta before and after the aortic regurgitation was made. The calculated ejection flow volume rate and regurgitant volume were validated by the comparison with those simultaneously measured by an electromagnetic flowmeter. Based on these data, we can conclude that the current method provides accurate measurements of regurgitant volume as well as ejection flow volume rate in the ascending aorta. |
| | |
Authors:
|
Y Yoshida; E Moscarelli; J Tanouchi; T Masuyama; M Hori; T Kamada; A Kitabatake |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Echocardiography (Mount Kisco, N.Y.) Volume: 11 ISSN: 0742-2822 ISO Abbreviation: Echocardiography Publication Date: 1994 May |
Date Detail:
|
Created Date: 1994-11-23 Completed Date: 1994-11-23 Revised Date: 2003-11-14 |
Medline Journal Info:
|
Nlm Unique ID: 8511187 Medline TA: Echocardiography Country: SCOTLAND |
Other Details:
|
Languages: eng Pagination: 281-91 Citation Subset: T |
Affiliation:
|
First Department of Medicine, Osaka University School of Medicine, Japan. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Aorta / physiopathology Aortic Valve Insufficiency* / physiopathology, ultrasonography Blood Flow Velocity Dogs Echocardiography, Doppler* / methods Models, Cardiovascular Regional Blood Flow |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Quantification of cardiac jets: theory and limitations.
Next Document: Quantitative assessment of lumen area stenosis by Doppler echocardiography and application of contin...