Section I. Nuclear Medicine Cases of Dementia and Movement Disorders.- 1. Case 1: Mild Cognitive Impairment (MCI)-[18F]FDG and Amyloid PET.- 2. Case 2: Alzheimer's Disease-[18F]FDG, Tau, and Amyloid PET.- 3. Case 3: Alzheimer's Disease- Behavioral Variant.- 4. Case 4: Differentiating AD from non-AD pathology with molecular imaging (FDG, Amyloid and Tau PET).- 5. Case 5: Double plot Twist in a patient with a suspected diagnosis of Alzheimer's Disease.- 6. Case 6: FDG and amyloid PET in Limbic-predominant age-related encephalopathy.- 7. Case 7: Typical AD with Discordant Biomarkers.- 8. Case 8: Imaging Biomarkers in right temporal variant of Frontotemporal dementia.- 9. Case 9: Frontotemporal Dementia, Behavioural Variant, Mimicker.- 10. Case 10: Creutzfeldt-Jakob Disease.- 11. Case 11: Creutzfeldt-Jakob Disease with Pathological Confirmation.- 12. Case 12: Atypical Upper Motor Neuron Disease.- Section II. Nuclear Medicine Cases of Movement Disorders.- 13. Case 13: Parkinson's Disease with Onset as Mild Cognitive Impairment (MCI).- 14. Case 14: Parkinson's Disease with Vascular Abnormalities.- 15. Case 15: Parkinson's Disease with Left-Sided Spasticity.- 16. Case 16: Holmes Tremor.- 17. Case 17: Multiple System Atrophy with DAT SPECT and [18F]FDG PET.- 18. Case 18: Progressive Supranuclear Palsy: Richardson Syndrome and Parkinsonian Variants.- 19. Case 19: Progressive Supranuclear Palsy (PSP).- 20. Case 20: Corticobasal Syndrome: [18F]FDG and Amyloid PET.- 21. Case 21: Huntington's Disease with Atypical Onset.- 22. Case 22: Huntington's Disease with Psychiatric Onset.- Section III. Nuclear Medicine Cases of Epilepsy and Encephalitis.- 23. Case 23: Non-lesional Temporal Epilepsy.- 24. Case 24: Non-Lesional Epilepsy: A Tricky Case.- 25. Case 25: Ictal [18F]FDG PET Imaging.- 26. Case 26: Focal Refractory Epilepsy with Negative MRI.- 27. Case 27: Metabolic Abnormalities After Failed Resective Temporal Epilepsy Surgery.- 28. Case 28: Hypothalamic Hamartoma with Cortical Metabolic Abnormalities.- 29. Case 29: Autoimmune Encephalitis with Unusual Antibodies.- 30. Case 30: Psychiatric Presentation of Anti-N-Methyl-D-Aspartate Receptor (NMDAR) Limbic Encephalitis.- 31. Case 31: Limbic Encephalitis.- 32. Case 32: Hashimoto Encephalitis.- Section IV. Nuclear Medicine Cases of Brain Tumors and Miscellaneous.- 33. Case 33: Somatostatin Receptor Targeted PET to differentiate radiation necrosis from a meningioma recurrence.- 34. Case 34: Somatostatin Receptor therapy in a grade II Meningioma.- 35. Case 35: Postoperative Meningioma.- 36. Case 36: Meningioma with Difficult Delineation on MRI.- 37. Case 37: Optic Nerve Sheath Meningioma (ONSM).- 38. Case 38: Pseudoresponse in Glioblastoma.- 39. Case 39: Progressive Glioma.- 40. Case 40: Primary Diagnosis of a Glioblastoma with atypical presentation on MRI.- 41. Case 41: Distinguishing treatment-related changes from true progression in IDH-Mutant glioma using dynamic amino acid PET imaging.- 42. Case 42: Primary Brain Lymphoma.- 43. Case 43: Neurolymphomatosis.- 44. Case 44: Atypical Teratoid Rhabdoid Tumor (ATRT): Identification of Altered Cerebrospinal Fluid Circulation Impacting Intrathecal Chemotherapy.- 45. Case 45: Suspected Recurrence of Brain Metastasis After Radiotherapy.- 46. Case 46: [18F]FET PET and MRI in patients with corticotrope adenoma: report of two cases.- 47. Case 47: Contribution of [18F]FET PET in the diagnosis with leptomeningeal metastases.- 48. Case 48: Initial characterization of a newly diagnosed brain tumor with dynamic amino-acid PET imaging.- 49. Case 49: Theranostics for brain tumors.- 50. Case 50: [18F]FET PET/MR in Rosette-forming glioneuronal tumours (RGNTs).- 51. Case 51: Tumefactive Multiple Sclerosis Lesions (TMS).- 52. Case 52: PET imaging in Neuro-vascular disease.- 53. Case 53: Second generation tau-PET in a case with arteriovenous malformation and mild cognitive impairment.