Article (Scientific journals)
Analysis of regional wall motion during contrast-enhanced dobutamine stress echocardiography: effect of contrast imaging settings.
Cosyns, Bernard; Van Camp, Guy; Droogmans, Sophie et al.
2009In European Journal of Echocardiography, 10 (8), p. 956-60
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Keywords :
Contrast echocardiography; Left ventricular function; Stress echocardiography; Myocardial perfusion
Abstract :
[en] Aims: Myocardial contrast perfusion echocardiography (MCE) allows simultaneous assessment of perfusion and function. However, low frame rate during MCE may reduce the viewer's ability to discern contractile dysfunction. This study sought to compare MCE and left ventricular opacification (LVO) settings with regard to wall motion abnormalities (WMA) at rest and during dobutamine stress echocardiography (DSE). Methods and results: In 50 patients scheduled for coronary angiography and with poor baseline image quality, MCE and LVO were performed during DSE. Regional wall motion was assessed and inter-observer agreement was determined for each imaging modality. The endocardial border score index was similar for both modalities. The wall motion score index (WMSCI) at peak stress using MCE was well correlated with WMSCI obtained with LVO (r2 = 0.9, P < 0.001). However, WMSCI at peak stress was underestimated by MCE (1.66 ± 0.58 with DSE-LVO vs. 1.535 ± 0.50 with DSE-MCE; P < 0.001). Inter-observer agreement on the presence of WMA was 0.65 for MCE and 0.67 for LVO at peak stress. Conclusion: Myocardial contrast perfusion echocardiography provides equal endocardial border delineation compared with LVO modality. Although the inter-observer agreement is slightly higher with LVO compared with MCE, it is not significantly different with MCE at peak stress. Despite the similar improvement in endocardial border delineation, LVO settings allow the detection of more WMA than MCE at peak stress, leading to a significantly higher accuracy for the detection of ischaemia in patients suspected of coronary artery disease when only wall motion is taken into account.
Disciplines :
General & internal medicine
Author, co-author :
Cosyns, Bernard;  UZ Brussel > Cardiology department
Van Camp, Guy
Droogmans, Sophie
Weytjens, Caroline
Schoors, Danny
Lancellotti, Patrizio  ;  Université de Liège - ULiège > Département des sciences cliniques > Imagerie cardiaque fonctionnelle par échographie
Language :
English
Title :
Analysis of regional wall motion during contrast-enhanced dobutamine stress echocardiography: effect of contrast imaging settings.
Publication date :
December 2009
Journal title :
European Journal of Echocardiography
ISSN :
1525-2167
eISSN :
1532-2114
Publisher :
Harcourt Publishers Limited
Volume :
10
Issue :
8
Pages :
956-60
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 22 February 2010

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