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Adaptive Heart Rate Prediction for Black-Blood Systolic Imaging

Abstract : Cardiac MRI is still challenging due to the perpetual heart motion. In order to avoid cardiac motion artifacts, acquisitions are synchronized with heart activity, generally by triggering on R-waves of the Electrocardiogram (ECG). Double Inversion Recovery Fast Spin Echo (DIR-FSE) sequences, resulting in black-blood images, require furthermore specific timing. For such acquisitions, inversion time (TI) is needed to cancel blood signals (~500ms) [1], making acquisitions in the first 500ms of the cardiac cycle impossible. Black-blood imaging allows then only diastolic view of the heart. Moreover heart rate (HR) variability has been shown to be important during breath-holds [2] making cardiac synchronization even more complicated. In this paper, a RR interval prediction method has been implemented, which permits to launch DIR pulses before R waves and thus enables black blood systolic imaging.
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Contributor : Sébastien van Luchene <>
Submitted on : Friday, November 27, 2009 - 10:23:45 PM
Last modification on : Tuesday, October 13, 2020 - 10:45:39 AM

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  • HAL Id : hal-00436939, version 1

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Julien Oster, Brice Fernandez, Maélène Lohézic, Damien Mandry, Pierre-André Vuissoz, et al.. Adaptive Heart Rate Prediction for Black-Blood Systolic Imaging. ISMRM 2009, Apr 2009, Honolulu, United States. ⟨hal-00436939⟩

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