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OUR MISSION: TO REDUCE THE BURDEN OF CARDIOVASCULAR DISEASE
Find out more about Contrast Echocardiography by exploring the Contrast Echo Box
Dolan MS, Gala SS, Dodla S, Abdelmoneim SS, Xie F, Cloutier D, Bierig M, Mulvagh SL, Porter TR, Labovitz AJ.
A retrospective analysis of 42,408 patients who had baseline suboptimal images and/or underwent perfusion imaging and received contrast agents; 18,749 of these underwent stress echocardiography. Endocardial border visualization in patients with sub-optimal images given contrast resulted in comparable sensitivity (81% vs. 73%, p = NS) and diagnostic accuracy (82% vs. 77%, p = NS) for wall motion analysis compared with patients with optimal image quality. They concluded that contrast is a safe and useful diagnostic tool in the stress echocardiography laboratory.
Reference: J Am Coll Cardiol. 2009; 53(1); 32-8
Plana JC, Mikati IA, Dokainish H, Lakkis N, Abukhalil J, Davis R, Hetzell BC, Zoghbi WA.
In a unique randomised trial setting, 101 patients referred for DSE agreed to have the test twice within a 24hour period – once with contrast and once without. The use of a contrast agent improved the percentage of segments adequately visualized at baseline (from 72 to 95%) and more so at peak stress (67 to 96%). Interpretation of wall motion with high confidence also increased with contrast agent use from 36% to 74%. The authors concluded that during dobutamine echocardiography, contrast agent administration improves endocardial visualization at rest and more so during stress, leading to a higher confidence of interpretation and greater accuracy in evaluating CAD.
Reference: JACC Cardiovasc Imaging. 2008 Mar; 1(2); 145-52
Hoffmann R, von Bardeleben S, Kasprzak J, Borges AC , ten Cate F, Firschke C, Lafitte S, Al-Saadi N, Kuntz-Hehner S, Horstick G, Greis C, Engelhardt M, Vanoverschelde JL & Becher H.
56 patients had LV regional systolic function assessed using several imaging techniques. The best inter-observer agreement was found with contrast echocardiography (ĸ = 0.77) whereas it was significantly lower for ventriculography (ĸ = 0.56) and CMR (ĸ = 0.43). Accuracy to detect regional abnormalities, as defined by an expert panel, was highest for contrast echocardiography.
Reference: J Am Coll Cardiol (2006); 47(1); 121-28
Hoffmann R, von Bardeleben S, ten Cate F, Borges AC, Kasprzak J, Firschke C, Lafitte S, Al-Saadi N, Kuntz-Hehner S, Engelhardt M, Becher H & Vanoverschelde JL.
55 patients had LV systolic function assessed using several imaging techniques and the results were read by 3 experts (1 on site and 2 off site). Unenhanced echocardiography underestimated ejection fraction (EF) and had only moderate correlation with CMR and ventriculography. Contrast-enhanced echo provided a much more accurate EF with superior correlation with CMR. The inter-observer variability (measured by intra-class coefficient) was highest for contrast echo (0.91), followed by CMR (0.86), cineventriculography (0.80) and unenhanced echo (0.79).
Reference: Eur Heart J (2005); 26; 607-16
Malm S, Frigstad S, Sagberg E, Larsson H, Skjaerpe T.
A Norwegian prospective study in which 110 patients underwent unenhanced 2D echocardiography, contrast-enhanced 2D-echo and cardiac MRI (1.5T). EF and LV volumes were significantly underestimated by unenhanced echo and accuracy of all parameters were significantly improved by use of contrast, including inter-observer and intra-observer variability.
Reference: J Am Coll Cardiol. 2004; 44(5); 1030-5
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