Multi-Spectral T1 Weighted Imaging and T1 Quantification Using 3D Radial K-Space Trajectory

Steven Kecskemeti¹, Nagesh Adluru¹, Samuel A. Hurley², Andrew L. Alexander¹

In this study, 3D radial k-space sampling with inversion recovery is used to image more than 100 points along the magnetization recovery curve in a single exam of duration similar to a standard 3D Cartesian IR-fGRE image. The effective inversion times may be reconstructed as finely as a single TR, enabling the user to retrospectively select the images with the optimal contrast, thereby eliminating the need to select a single, specific inversion time prior to data acquisition. T1 maps are created by fitting the image signals from the different inversion times to a theoretical signal model.