In:
Circulation: Cardiovascular Imaging, Ovid Technologies (Wolters Kluwer Health), Vol. 3, No. 4 ( 2010-07), p. 415-423
Abstract:
Myocardial infarct scars are usually imaged by delayed-enhanced cardiac magnetic resonance (DE-cMR). In this study, we tested the hypothesis that the detection and quantification of myocardial scars can be evaluated by 3D echocardiography (3D-echo). Methods and Results— Fifty patients with a healed myocardial infarction ( 〉 3 months) and 10 controls underwent 3D echo and DE-cMR within 2 weeks. 3D-echo images were acquired with different settings, with or without contrast. The highest contrast-to-noise ratio was obtained with second-harmonic imaging (1.6/3.2 MHz), at a mechanical index of 0.5, in the presence of contrast. Using this modality, we calculated the sensitivity and specificity of the 3D-echo detection of cMR scars on a segmental basis to be 78% and 99%, respectively. On a per-patient basis, they were 96% and 90%, respectively. Good correlation and limits of agreement were found between the assessment of scar mass by 3D echo and DE-cMR ( r =0.93, P 〈 0.001; bias, 1.4±3.6 g), and the concordance between both techniques for the assessment of scar transmurality was good. Intraobserver, interobserver, and day-to-day reproducibility was comparable between 3D echo and DE-cMR for both the detection and quantification of scars. Conclusions— Contrast-enhanced 3D echo is a promising new tool for the detection and quantification of myocardial infarct scars.
Type of Medium:
Online Resource
ISSN:
1941-9651
,
1942-0080
DOI:
10.1161/CIRCIMAGING.109.912477
Language:
English
Publisher:
Ovid Technologies (Wolters Kluwer Health)
Publication Date:
2010
detail.hit.zdb_id:
2440475-5
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