Hing-Chiu Chang1,2, Chun-Jung Juan3, Yi-Jui Liu4, Chao-Chun Lin2,5, Hao Shen6, Tzu-Chao Chuang7, Hsiao-Wen Chung2
1Applied Science Laboratory, GE Healthcare Taiwan, Taipei, Taiwan; 2Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan; 3Department of Radiology, Tri-Service General Hospital, Taipei, Taiwan; 4Department of Automatic Control Engineering, Feng Chia University, Taichung, Taiwan; 5Department of Radiology, China Medical University Hospital, Taichung, Taiwan; 6Applied Science Laboratory, GE Healthcare, Beijing, China; 7Electrical Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan
Current implementation of PROPELLER-EPI exhibits difficulty in small FOV or non-axial acquisition due to the aliasing artifact along the phase-encoding direction of each blade. In this work, we propose a ZOOM-PROPELLER-EPI technique, which combines the reducing-FOV (rFOV) EPI to obtain sagittal images with a small FOV. We combined PROPELLER-EPI with three types of rFOV EPI technique based on inner volume excitation, both phantom and in vivo results demonstrated effectiveness of ZOOM-PROPELLER-EPI. The proposed method may find applications in non-axial high-resolution scans such as diffusion-weighted imaging of the cerebellum.