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Abstract #0023

Flexible Time-Resolved Golden Angle Dual-Inversion Recovery Acquisition to Facilitate Sequence Timing in High-Resolution Coronary Vessel Wall MRI at 3T

Giulia Ginami 1,2 , Jrme Yerly 1,2 , and Matthias Stuber 1,2

1 Department of Radiology, University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland, 2 Center for Biomedical Imaging (CIBM), Lausanne and Geneva, Switzerland

Coronary vessel wall MRI based on dual inversion recovery (DIR) is complicated by the need to collect data during both the period of minimal cardiac motion and the optimal blood nulling time. We propose a continuous acquisition scheme throughout an extended acquisition window after DIR. Combined with golden angle radial acquisition and k-t sparse SENSE, our framework enables a fully flexible a posteriori selection of the optimal imaging time and significantly improves vessel wall conspicuity with respect to the conventional acquisition. Our framework alleviates the need of subject-specific sequence timing and improves the success rate of coronary vessel wall imaging.

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