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Adaptive Black Blood Fast Spin Echo for End-Systolic Rest Cardiac Imaging

Abstract : Black blood Fast Spin Echo imaging of the heart is usually performed during the mid-diastolic rest. This is a direct consequence of the long inversion time required to suppress the blood signal, which is constrained by the T1 of the blood, as well as the heart rate or repetition time. To overcome these constraints and to acquire black blood images in end-systolic rest, a new approach is introduced aiming at adaptively predicting the best time to prepare and acquire MR signals. It is based on an RR interval prediction algorithm and on a cardiac cycle model. Applied on fourteen healthy volunteers, the proposed method is compared to a simple alternative using a fixed delay and to the standard black blood imaging in mid- diastolic rest. Results show that the proposed method offers an increased robustness in terms of trigger delay error and image quality compared to the tested simple alternative. This is also demonstrated that the right ventricle is better depicted than in images acquired with the standard mid-diastolic rest acquisition, thanks to an image comparison done by an experienced radiologist, especially the thin right ventricle free wall.
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Submitted on : Thursday, June 23, 2011 - 4:01:54 PM
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Brice Fernandez, Julien Oster, Maélène Lohézic, Damien Mandry, Olivier Pietquin, et al.. Adaptive Black Blood Fast Spin Echo for End-Systolic Rest Cardiac Imaging. Magnetic Resonance in Medicine, Wiley, 2010, 64 (6), pp.1760-1771. ⟨10.1002/mrm.22566⟩. ⟨hal-00545837⟩



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