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New Method for Quantitatively Determining Aortic Regurgitant Volume Using Doppler Color Flow Imaging:
Author(s) -
YOSHIDA YUTAKA,
MOSCARELLI ELENA,
TANOUCHI JUN,
MASUYAMA TOHRU,
HORI MASATSUGU,
KAMADA TAKENOBU,
KITABATAKE AKIRA
Publication year - 1994
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/j.1540-8175.1994.tb01078.x
Subject(s) - ascending aorta , blood flow , volumetric flow rate , doppler effect , volume (thermodynamics) , flow (mathematics) , flow measurement , regurgitation (circulation) , flow velocity , ultrasound , aorta , biomedical engineering , medicine , physics , acoustics , mechanics , cardiology , quantum mechanics , astronomy
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. (ECHOCARDIOGRAPHY, Volume 11, May 1994)