{
  "ptid_time": "023_S_2068_2017-12-15",
  "img_path": "/data/qiuhui/data/adni/images/023_S_2068/2017-12-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 68,412 mm³, 40.0% above the reference mean. With a Z-score of 3.62 (100.0th percentile), this represents profound enlargement; whole brain volume measures 986,472 mm³, 1.5% below the reference mean. With a Z-score of -0.26 (39.8th percentile), this represents normal volume . ",
  "text_data": "Age is 90.1 years. Gender is Male. Education: 20 years. MMSE: 27.0. MoCA: 19.0. Logical Memory: 7.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.68 SUVR (profound elevated). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The patient shows profound ventricular enlargement (Z-score 3.62) with normal whole brain volume, suggesting significant atrophy. Despite a normal MMSE (27), the MoCA (19) indicates cognitive impairment, and elevated AV45 (amyloid PET) supports Alzheimer's pathology.  \n**Diagnosis:** **Dementia (likely Alzheimer’s disease)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T02:59:46.341317"
}