Pushing CT and MR Imaging to the Molecular Level for Studying the “Omics”: Current Challenges and Advancements
Figure 7
The sampling features in view-sharing technologies: Keyhole, TWIST, and MR fluoroscopy. (a) Keyhole acquired full -space at the beginning or the end of the dynamic scan. Only central -space (A1, A2, and so on, where the number indicated the times of update) was renewed at each time frame and the rest was kept the same for image reconstruction. (b) TWIST updated the central -space information more frequently. The outer -space was divided into several subregions, for example, three (B, C, and D) in this case, and only one of them was updated at each time frame interleaved by the renewal of the central -space. (c) MR fluoroscopy updated the -space sequentially and uniformly everywhere. Part of the information was acquired at each time frame and updated to -space for dynamic image reconstruction.
