{
  "ptid_time": "131_S_0409_2006-04-25",
  "img_path": "/data/qiuhui/data/adni/images/131_S_0409/2006-04-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 92,394 mm³, 139.9% above the reference mean. With a Z-score of 3.35 (100.0th percentile), this represents profound enlargement; whole brain volume measures 1,052,220 mm³, 2.5% below the reference mean. With a Z-score of -0.33 (37.2th percentile), this represents normal volume . ",
  "text_data": "Age is 79.1 years. Gender is Male. Education: 12 years. MMSE: 28.0. Logical Memory: 3.0. APOEε4 alleles: 1.0. Biomarker levels: Amyloid beta: 633.30 pg/mL (mild reduced); Total tau: 260.50 pg/mL (normal ); Phosphorylated tau: 22.50 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is significantly enlarged (Z-score 3.35), which is a strong indicator of neurodegeneration, while whole brain volume remains within normal limits. The MMSE score of 28 is normal, and biomarkers (Aβ mildly reduced, normal tau) suggest early amyloid pathology but no significant tauopathy.  \nDiagnosis: **MCI** (likely early neurodegenerative changes, but cognitive function is preserved).  \nConfidence: **Medium** (ventricular enlargement is concerning, but cognitive and tau biomarkers do not yet support dementia).",
  "timestamp": "2025-07-26T15:05:04.074919"
}