1065 Three-directional myocardial motion in patients with univentricular hearts using velocity-encoded phase contrast MR
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BioMed Central
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Meeting abstract
1065 Three-directional myocardial motion in patients with univentricular hearts using velocity-encoded phase contrast MRI Christina E Saikus*1, Kartik Sundareswaran1, Resmi Krishnankutty1, John N Oshinski1, Mark A Fogel2 and Ajit P Yoganathan1 Address: 1Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, GA, USA and 2The Children's Hospital of Philadelphia, Philadelphia, PA, USA * Corresponding author
from 11th Annual SCMR Scientific Sessions Los Angeles, CA, USA. 1–3 February 2008 Published: 22 October 2008 Journal of Cardiovascular Magnetic Resonance 2008, 10(Suppl 1):A190
doi:10.1186/1532-429X-10-S1-A190
Abstracts of the 11th Annual SCMR Scientific Sessions - 2008
Meeting abstracts – A single PDF containing all abstracts in this Supplement is available here. http://www.biomedcentral.com/content/pdf/1532-429X-10-S1-info.pdfThis abstract is available from: http://jcmr-online.com/content/10/S1/A190 © 2008 Saikus et al; licensee BioMed Central Ltd.
Introduction Patients with univentricular hearts rely on a single functioning ventricle to provide blood flow to both the systemic and pulmonary circuits following completion of the Fontan circulation. Tracking the function of the remaining ventricle in these patients is of interest as their long-term survival continues to improve and the ability of this single ventricle to sustain an increased load or serve an atypical role, as in the case of systemic right ventricles, is continually tested. Velocity-encoded phase contrast magnetic resonance imaging (PC MRI) may provide an efficient
technique with high spatial resolution to attain threecomponent myocardial tissue velocities in addition to flow information throughout the cardiac cycle which could be useful in the monitoring of these patients.
Purpose This study investigated the use of velocity-encoded PC MRI to produce three-directional velocity fields of myocardial motion throughout the cardiac cycle for analysis of ventricular wall motion and function in pediatric patients
Figure 1 Three-directional velocity contours for single left ventricle in early systole Three-directional velocity contours for single left ventricle in early systole.
Page 1 of 2 (page number not for citation purposes)
Journal of Cardiovascular Magnetic Resonance 2008, 10(Suppl 1):A190
http://jcmr-online.com/content/10/S1/A190
Figure 2 Three-directional veolicty contours for single right ventricle in early systole Three-directional veolicty contours for single right ventricle in early systole.
with univentricular hearts during conversion to and following completion of the Fontan circulation.
Methods Myocardial velocimetry imaging was performed in a 1.5 Tesla Siemens Magnetom Avanto MRI scanner (Siemens Medical Solutions USA, Malver, PA) at The Children's Hospital of Philadelphia (CHOP). A single short-axis slice (thickness 4–6 mm) was taken at the mid-ventricular level with retrospective ECG-gating. Magnitude and p
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