Selection of T2 components from segmented k-space multiecho data: improving efficiency of T2 relaxometry for myelin quantification.
Alexander A, Field A, Samsonov A
University of Wisconsin
Analysis of multiexponential T2 relaxation decay of the MR signal from a voxel may provide important information about water compartmentation within the voxel. Usually, collection of such data is time consuming. We propose a new method to significantly improve efficiency of data collection for T2 spectrum analysis in which only a part of the CPMG echo train is used for T2 decay sampling, while the rest of the echoes are utilized for k-space segmentation. The drawback of the method is SNR loss relative to images reconstructed from a full set of echoes. The method was demonstrated with simulated data.