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01-06-2012 | Cardiac

Quantitative analysis of left ventricular dyssynchrony using cardiac computed tomography versus three-dimensional echocardiography

Authors: Sebastian J. Buss, Felix Schulz, David Wolf, Waldemar Hosch, Christian Galuschky, Georg Schummers, Evangelos Giannitsis, Hans-Ulrich Kauczor, Christian Zugck, Ruediger Becker, Stefan E. Hardt, Hugo A. Katus, Grigorios Korosoglou

Published in: European Radiology | Issue 6/2012

Abstract

Objectives

We investigated whether cardiac computed tomography (CCT) can determine intraventricular dyssynchrony in comparison to real-time three-dimensional echocardiography (RT3DE) in patients who are considered for cardiac resynchronisation therapy (CRT).

Methods

35 patients considered for CRT were examined. Left ventricular (LV) dyssynchrony was quantified by calculating the standard deviation index (SDI) of 17 myocardial LV segments by RT3DE and ECG-gated contrast-enhanced 64-slice dual-source CCT. For both analyses the same software algorithm (4D LV-Analysis) was used.

Results

Close correlations were observed for end-systolic volume, end-diastolic volume and LV ejection fraction between the two techniques (r = 0.94, r = 0.92 and r = 0.95, respectively, P < 0.001 for all). For the global dyssynchrony index SDI, a high correlation was found between RT3DE and CCT (r = 0.84, P < 0.001), which further increased after exclusion of segments with poor image quality by echocardiography (r = 0.90, P < 0.001). The required time for quantitative analysis was significantly shorter (162 ± 22 s vs. 608 ± 112 s per patient, P < 0.001) and reproducibility was significantly higher for CCT compared with RT3DE (interobserver variability of 4.5 ± 3.1% vs. 7.9 ± 6.1%, P < 0.05).

Conclusion

Quantitative assessment of LV dyssynchrony is feasible by CCT. Owing to its higher reproducibility and faster analysis time compared with RT3DE, this technique may represent a valuable alternative for dyssynchrony assessment.

Key Points

• Quantitative assessment of left ventricular dyssynchrony is feasible by cardiac computed tomography (CCT).

• This technique has been compared with real-time three-dimensional echocardiography (RT3DE).

• Reproducibility is significantly higher for CCT compared with RT3DE.

• Time spent for analysis is significantly shorter for CCT.

• Computed tomography may represent a valuable alternative to ultrasound for dyssynchrony assessment.

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Title: Quantitative analysis of left ventricular dyssynchrony using cardiac computed tomography versus three-dimensional echocardiography
Authors: Sebastian J. Buss
Felix Schulz
David Wolf
Waldemar Hosch
Christian Galuschky
Georg Schummers
Evangelos Giannitsis
Hans-Ulrich Kauczor
Christian Zugck
Ruediger Becker
Stefan E. Hardt
Hugo A. Katus
Grigorios Korosoglou
Publication date: 01-06-2012
Publisher: Springer-Verlag
Published in: European Radiology / Issue 6/2012
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-011-2375-0

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Quantitative analysis of left ventricular dyssynchrony using cardiac computed tomography versus three-dimensional echocardiography

Abstract

Objectives

Methods

Results

Conclusion

Key Points

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Objectives

Methods

Results

Conclusion

Key Points

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