This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Request Permissions Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Yoshida, K. Articles by Miyamoto, T. Search for Related Content PubMed PubMed Citation Articles by Yoshida, K. Articles by Miyamoto, T.

Circulation, Vol 83, 1951-1955, Copyright © 1991 by American Heart Association

ARTICLES

Assessment of aortic regurgitation by the acceleration flow signal void proximal to the leaking orifice in cinemagnetic resonance imaging

K Yoshida, J Yoshikawa, T Hozumi, T Akasaka, Y Yamaura, S Minagoe, H Nakajima and T Miyamoto
Department of Cardiology, Kobe General Hospital, Japan.

BACKGROUND. The proximal acceleration flow region is a laminar flow field that is located immediately upstream from the leaking orifice. The purpose of this study was to evaluate whether cinemagnetic resonance imaging can provide information regarding the proximal acceleration flow region in patients with aortic regurgitation and to analyze the relation between the area of the proximal acceleration flow delineated by cinemagnetic resonance imaging and the severity of aortic regurgitation delineated by angiography. METHODS AND RESULTS. Thirty- eight consecutive patients who underwent aortography were examined by cinemagnetic resonance imaging. The region of proximal flow acceleration was identified as a semicircular-shaped signal void in the aorta during diastole. Cinemagnetic resonance imaging detected the proximal acceleration flow region in 26 of the 30 patients who were proved to have this lesion (sensitivity, 87%). In eight patients without aortic regurgitation according to aortography, no proximal acceleration flow region was detected (specificity, 100%). The area of the acceleration flow signal void from the long-axis view was well correlated with angiographic degree of aortic regurgitation. CONCLUSIONS. Cinemagnetic resonance imaging is useful in detecting the proximal acceleration flow region and permits noninvasive assessment of the severity of aortic regurgitation.

This article has been cited by other articles:

				D. J. Pennell, U. P. Sechtem, C. B. Higgins, W. J. Manning, G. M. Pohost, F. E. Rademakers, A. C. van Rossum, L. J. Shaw, and E. K. Yucel Clinical indications for cardiovascular magnetic resonance (CMR): Consensus Panel report Eur. Heart J., November 1, 2004; 25(21): 1940 - 1965. [Full Text] [PDF]

				T. Shiota, M. Jones, A. Delabays, X. Li, I. Yamada, M. Ishii, P. Acar, S. Holcomb, N. G. Pandian, and D. J. Sahn Direct Measurement of Three-dimensionally Reconstructed Flow Convergence Surface Area and Regurgitant Flow in Aortic Regurgitation : In Vitro and Chronic Animal Model Studies Circulation, November 18, 1997; 96(10): 3687 - 3695. [Abstract] [Full Text]

				T. Shiota, M. Jones, I. Yamada, R. S. Heinrich, M. Ishii, B. Sinclair, S. Holcomb, A. P. Yoganathan, and D. J. Sahn Effective Regurgitant Orifice Area by the Color Doppler Flow Convergence Method for Evaluating the Severity of Chronic Aortic Regurgitation : An Animal Study Circulation, February 1, 1996; 93(3): 594 - 602. [Abstract] [Full Text]