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J Magn Reson Imaging. 2008 Nov;28(5):1086-91. doi: 10.1002/jmri.21566.

Cross-correlation delay to quantify myocardial dyssynchrony from phase contrast magnetic resonance (PCMR) velocity data.

Author information

1
Department of Radiology, Emory University School of Medicine, Atlanta, Georgia 30322, USA. jana.delfino@emory.edu

Abstract

PURPOSE:

To apply cross-correlation delay (XCD) analysis to myocardial phase contrast magnetic resonance (PCMR) tissue velocity data and to compare XCD to three established "time-to-peak" dyssynchrony parameters.

MATERIALS AND METHODS:

Myocardial tissue velocity was acquired using PCMR in 10 healthy volunteers (negative controls) and 10 heart failure patients who met criteria for cardiac resynchronization therapy (positive controls). All dyssynchrony parameters were computed from PCMR velocity curves. Sensitivity, specificity, and receiver operator curve (ROC) analysis for separating positive and negative controls were computed for each dyssynchrony parameter.

RESULTS:

XCD had higher sensitivity (90%) and specificity (100%) for discriminating between normal and patient groups than any of the time-to-peak dyssynchrony parameters. ROC analysis showed that XCD was the best parameter for separating the positive and negative control groups.

CONCLUSION:

XCD is superior to time-to-peak dyssynchrony parameters for discriminating between subjects with and without dyssynchrony and may aid in the selection of patients for cardiac resynchronization therapy.

PMID:
18972349
PMCID:
PMC5695683
DOI:
10.1002/jmri.21566
[Indexed for MEDLINE]
Free PMC Article

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