The repeatability of dynamic contrast enhanced (DCE)-MRI has not been fully studied, particularly with contrast kinetic parameters including intracellular water lifetime (τi). The purposes of this study were: (1) to investigate the repeatability of DCE-MRI with the newly proposed technique, 3D-UTE-GRASP (Golden angle Radial Sparse Parallel), which can provide isotropic high-resolution images for quantitative pharmacokinetic model analysis; and (2) to investigate the repeatability of intracellular water lifetime estimation using the two-flip angle DCE-MRI approach.
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