{
  "ptid_time": "023_S_0855_2007-09-06",
  "img_path": "/data/qiuhui/data/adni/images/023_S_0855/2007-09-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 56,326 mm³, 46.2% above the reference mean. With a Z-score of 1.11 (86.6th percentile), this represents mild enlargement; whole brain volume measures 1,023,980 mm³, 5.1% below the reference mean. With a Z-score of -0.67 (25.3th percentile), this represents normal volume . ",
  "text_data": "Age is 76.6 years. Gender is Male. Education: 12 years. Handedness: Unknown. Race: Unknown. MMSE: 22.0. Logical Memory: 0.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 595.20 pg/mL (mild reduced); Total tau: 331.90 pg/mL (mild elevated); Phosphorylated tau: 36.59 pg/mL (moderate elevated). ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The patient shows mild ventricular enlargement and normal whole brain volume, suggesting some structural changes but not severe atrophy. The MMSE score of 22 indicates cognitive impairment, and biomarker findings (mildly reduced Aβ, elevated T-tau, and moderately elevated P-tau) are consistent with Alzheimer’s pathology.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)** (likely due to Alzheimer’s pathology)  \n**Confidence:** **Medium** (MMSE is borderline, and structural changes are mild, but biomarkers support neurodegeneration)",
  "timestamp": "2025-07-26T02:47:24.221623"
}