NDLI: Comparison of left ventricular stroke volume determination by real-time three-dimensional echocardiography and conventional two-dimensional echocardiography: an animal study during non-ischemic and ischemic conditions

Content Provider	IEEE Xplore Digital Library
Author	Qin, J.X. Jones, M. Shiota, T. Greenberg, N.L. Cardon, L.A. Zetts, A.D. Tsujino, H. Thomas, J.D.
Copyright Year	1998
Description	Author affiliation: Cardiovascular Imaging Center, Cleveland Clinic Found., OH, USA (Qin, J.X.)
Abstract	Recently, 3D echocardiography (3DE) has developed the capability to capture 3D images in real-time and has been reported to be accurate for estimating left ventricular (LV) volume. The authors hypothesized that real-time 3DE could determine LV stroke volumes (SV) more accurately than conventional 2DE. The aim of this study was to compare 2DE and 3DE for estimating LV stroke volumes during a variety of hemodynamic conditions, including left anterior descending (LAD) coronary artery occlusions. During a total of 30 hemodynamic conditions in 6 sheep with chronic aortic regurgitation, electromagnetic (EM) flow probes and meters were used to obtain LV SV. LV end-diastolic (LV EDV) and LV end-systolic volumes (LV ESV) were measured using real-time; 3DE with Simpson's rule (slice spacing 7 mm). For 24 conditions without LAD occlusions, SV by EM ranged from 27 to 66 ml (average 45/spl plusmn/10 ml). The correlation for LV SV measured by 3DE and that by EM was excellent (r=0.92, y=0.91x+3.6, /spl Delta/=-1/spl plusmn/4 ml, n=24), and better than that between 2DE and EM (r=0.62, y=0.68x+8.8, /spl Delta/=-5.6/spl plusmn/9.4 ml, p=0.0003). For 6 conditions during LAD occlusion, SV by EM ranged from 26 to 58 ml (average 41/spl plusmn/12 ml). SV derived from 3DE also agreed well with values derived by EM (r=0.96); however, the r-value between 2DE and EM was reduced to 0.58. It is concluded that real-time 3DE provided accurate assessment of LV SV under both ischemic and nonischemic conditions, while conventional 2DE showed poor correlations with reference standards, especially for SVs during coronary artery occlusion.
Starting Page	645
Ending Page	648
File Size	354631
Page Count	4
File Format	PDF
ISBN	0780352009
ISSN	02766547
DOI	10.1109/CIC.1998.731956
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-09-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Animals Ultrasonic imaging Echocardiography Heart Blood Hemodynamics Arterial occlusion Cardiology Lungs Probes
Content Type	Text
Resource Type	Article

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