Dan Zhu1, Zhengwei Zhou2, Feng Huang3, Kui Ying4
1Department of Biomedical Engineering, Tsinghua, Beijign, China; 2Department of Biomedical Engineering, Tsinghua, Beijing, China; 3Philips Healthcare, Beijing, China; 4Department of Engineering Physics, Tsinghua, Beijing, China
The speed of imaging remains one of the basic challenges in Magnetic Resonance Imaging. A large amount of work on fast imaging was focused on studying how to reconstruct an image from a fixed undersampling design. Much less work was done on how to choose the sampling design at the first place. Since trajectory optimization is usually computationally expensive, in this work, we focus on studying the reusability of optimized trajectory. This topic was studied from the following 4aspects: whether the optimized trajectory can be shared among images of different contrasts, different subjects, different slices and different coils.