Flow charts of the ES and the CURLIE algorithms. The left panel shows a diagram for the generation of TE images with the ES algorithm by mixing TE data in k-space. For simplicity an ETL = 3 is used in the diagram (compared with ETL = 16 used in this paper). T2 maps are generated after a least-squares fitting of the magnitude TE images. The right panel outlines the main steps for the generation of the TE images based on the CURLIE algorithm. T2 maps are generated after SEPG fitting of the complex TE images.