Real-Time Three-Dimensional Echocardiography

Kapetanakis, Stam; Kearney, Mark T.; Siva, Anjana; Gall, Nicholas; Cooklin, Michael; Monaghan, Mark

doi:10.1161/circulationaha.104.474445

Cited by 474 publications

(131 citation statements)

References 35 publications

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“…Using the 3D echo 16-segment dyssynchrony index previously described by Kapetanakis et al [13], 15 patients (71%) had significant mechanical dyssynchrony ([3SD above the mean for normal subjects, which is 5.6% in our case).…”

Section: Resultsmentioning

confidence: 56%

“…16-Segment dyssynchrony index (%) [13] 8.4 ± 3.7 3.5 ± 0.7 with respect to the volume curve. The accompanying average regression coefficient was 43.0 ± 5.6%cm -1 (mean ± SE), and the constant was -87.2 ± 10.9% (mean ± SE).…”

Section: Cross-correlationsmentioning

confidence: 99%

“…Both echocardiography and MRI are used to quantify mechanical dyssynchrony. While several measures of mechanical dyssynchrony are commonly used in ultrasound, such as tissue Doppler imaging (velocity [9,10], strain [11]) or 3D-echo (volume [12,13]), MRI predominantly focuses on circumferential strain [6,14]. Myocardial strain is probably a more robust parameter for assessing mechanical dyssynchrony than regional wall motion or velocity, as it is less affected by overall heart motion and tethering [15].…”

Section: Introductionmentioning

confidence: 99%

“…However, with the technique of real-time 3D-echocardiography, regional LV volume can be quantified during the whole cardiac cycle. This technique was found to provide fast and accurate quantification of mechanical dyssynchrony [12,13].…”

Section: Introductionmentioning

confidence: 99%

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Relation between three-dimensional echocardiography derived left ventricular volume and MRI derived circumferential strain in patients eligible for cardiac resynchronization therapy

Rüssel

Dijk

Kleijn

et al. 2008

Int J Cardiovasc Imaging

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Objectives To compare regional left ventricular (LV) volume curves obtained with real time three-dimensional echocardiography (RT3DE) with two-dimensional circumferential strain curves obtained by MRI in cardiac resynchronization therapy candidates. Background Several methods using either ultrasound or MRI are used to quantify mechanical dyssynchrony (MD). Theoretically, LV volume and circumferential strain seem related, since both measures are connected to the radius of the ventricle. Methods In 21 patients with chronic heart failure, RT3DE and tagged MRI were performed subsequently. Regional LV volume was computed from the ultrasound images. From the MR images, regional circumferential strain was calculated. Cross-correlations with time lags of 1% of the cardiac cycle were performed to compare the curves in corresponding LV segments. Furthermore, peak septal to lateral (SL) delays were compared between modalities. Results High correlations were found between the curves (r 2 = 0.65 ± 0.19), but regional differences in time delay between modalities were observed. In the septum, the volume curve was earlier than the strain curve by 1.8 ± 17.0 time-lags (n.s.), while in the lateral wall, the volume curve was earlier by 3.3 ± 12.0 time-lags (P \ 0.02). There was a non-significant difference between SL delays in the two modalities (volume: -1.0 ± 8.6%, strain: 3.0 ± 12.7%, P = 0.17, a positive sign indicates that the lateral wall is delayed). Conclusions High correlations were observed between both modalities, but regional differences in time-delay were found. This is possibly inherent to the method of echocardiographic volume calculation and hampers the comparison of both measures for the quantification of MD.

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Section: Resultsmentioning

confidence: 56%

Section: Cross-correlationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Relation between three-dimensional echocardiography derived left ventricular volume and MRI derived circumferential strain in patients eligible for cardiac resynchronization therapy

Rüssel

Dijk

Kleijn

et al. 2008

Int J Cardiovasc Imaging

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“…A SD = 32 msec identified dyssnchrony and correlated with a favourable CRT response 72 , 73 . Similarly, speckle tracking can assess dyssynchrony 74 as also RT3DE that examines the time to minimum systolic volume (TMSV) 75 , 76 .…”

Section: Newer Parameters and Applicationmentioning

confidence: 99%

Echocardiographic evaluation of systolic heart failure

Thomas

2009

Australas J Ultrason Med

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Echocardiography is the most commonly used modality for evaluating left ventricular size and function in the context of systolic heart failure. Traditional techniques, though extensively used, have their limitations and more recently several newer technologies have emerged that are more reproducible, provide prognostic information, guide therapies and have an important role in monitoring progress. This review will evaluate the traditional and more novel techniques used and briefly provide an overview of the role of echocardiography in guiding and monitoring therapies in patients with systolic heart failure.

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