Johannes Tran-Gia1, Daniel Stb1, Dietbert Hahn1, Herbert Kstler1
1Institute of Radiology, University of Wrzburg, Wrzburg, Germany
A model-based image reconstruction algorithm for parameter mapping of the apparent relaxation parameter T1eff after saturation preparation is presented. For radial trajectories, every acquired projection contains information about the image contrast. By incorporating a signal model into the image reconstruction, it is possible to use this information to resolve the signal evolution with a high temporal resolution, yielding the relaxation parameters T1eff. The functionality of the algorithm and the accuracy of the quantified parameters are demonstrated in phantom studies as well as in in-vivo measurements.