{
  "ptid_time": "023_S_1306_2007-02-16",
  "img_path": "/data/qiuhui/data/adni/images/023_S_1306/2007-02-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,755 mm³, 22.5% below the reference mean. With a Z-score of -0.52 (30.3th percentile), this represents normal volume ; whole brain volume measures 881,179 mm³, 9.6% below the reference mean. With a Z-score of -1.21 (11.4th percentile), this represents mild atrophy. ",
  "text_data": "Age is 74.5 years. Gender is Female. Education: 14 years. Handedness: Right. Race: White. Medical history: Cardiovascular; Musculoskeletal; Major Surgical Procedures. MMSE: 29.0. Logical Memory: 10.0. APOEε4 alleles: 1.0. Biomarker levels: Amyloid beta: 772.00 pg/mL (normal ); Total tau: 536.80 pg/mL (profound elevated); Phosphorylated tau: 56.02 pg/mL (profound elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The patient shows mild whole brain atrophy but normal ventricular volume. While MMSE is normal (29/30), the profound elevation in T-tau and P-tau suggests significant neurodegeneration, despite normal Aβ levels.  \nDiagnosis: MCI (likely non-amyloid pathology, e.g., primary age-related tauopathy or PART)  \nConfidence: Medium (atypical biomarker profile with normal Aβ but elevated tau; cognitive scores are preserved)",
  "timestamp": "2025-07-26T02:58:36.104786"
}