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Abstract #1724

Feasibility of Whole-Brain Dynamic Contrast Enhanced (DCE) MRI Using 3D K-T PCA

Henrik Pedersen1, Adam Espe Hansen1, Sebastian Kozerke2, Henrik B.W. Larsson1

1Functional Imaging Unit (KFNA), Glostrup Hospital, Glostrup, Denmark; 2Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland

Dynamic contrast-enhanced (DCE) MRI currently suffers from limited spatial coverage, preventing whole-brain quantification of cerebral blood flow. This study presents a new fast 3D imaging sequence for whole-brain DCE-MRI, which achieves a spatial coverage of 20 slices per second. The new sequence achieves faster imaging by skipping the saturation recovery (SR) pulses of conventional DCE-MRI and undersampling k-space using k-t PCA and partial Fourier imaging. The overall image quality of the proposed sequence is similar to conventional DCE-MRI, but we conclude that reliable sampling of the arterial input function requires a separate data acquisition, i.e., a dual-bolus approach.