1. Department of Medical Imaging, Taipei Tzu Chi General Hospital, Buddhist Tzu-Chi Medical Foundation, New Taipei City 23142, Taiwan
2. School of Medicine, Tzu Chi University, Hualien 97004, Taiwan
3. Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
4. Department of Biomedical Sciences and Engineering, Tzu Chi University, Hualien 97004, Taiwan