Sheng Fang1, Wenchuan Wu2, Hua Guo3
1Institute of nuclear and new energy technology, Tsinghua University, Beijing, China; 2Center for Biomedical Imaging Research, Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China; 3Center for Biomedical Imaging Research, Department of Biomedical Engineering, School of Medicine,, Tsinghua University, Beijing, China
A highly accelerated parallel imaging technique based on variable density spiral (VDS) acquisition and spatial adaptive CORNOL reconstruction is proposed. With an optimized undersampling and a reconstruction tailored for VDS, the proposed method can make the full use of MR image features by exploiting both the incoherence of aliasing artifacts and the coherence of image structures. The simulation and in vivo VDS experiments results demonstrate that this method can achieve a very high reduction factor while maintaining high SNR and well-preserved image structure