1. Graduate Institute of Clinical Medicine, College of Medicine National Taiwan University Taipei Taiwan
2. Department of Neurology National Taiwan University Hospital Bei‐Hu Branch Taipei Taiwan
3. Department of Neurology National Taiwan University Hospital Taipei Taiwan
4. Department of Nuclear Medicine National Taiwan University Hospital Taipei Taiwan
5. Molecular Imaging Center National Taiwan University Taipei Taiwan
6. Department of Neurology National Taiwan University Hospital Hsin‐Chu Branch Hsin‐Chu Taiwan