{
  "ptid_time": "027_S_0118_2010-02-15",
  "img_path": "/data/qiuhui/data/adni/images/027_S_0118/2010-02-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 44,582 mm³, 5.2% below the reference mean. With a Z-score of -0.15 (44.0th percentile), this represents normal volume ; whole brain volume measures 918,078 mm³, 10.8% below the reference mean. With a Z-score of -1.41 (7.9th percentile), this represents mild atrophy. ",
  "text_data": "Age is 84.4 years. Gender is Male. Education: 20 years. MMSE: 27.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 873.20 pg/mL (normal ); Total tau: 154.40 pg/mL (mild reduced); Phosphorylated tau: 14.40 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The patient shows mild whole brain atrophy but normal ventricular volume. Cognitive testing (MMSE 27) is within normal limits, and biomarkers (Aβ normal, T-tau mildly reduced, P-tau normal) do not suggest Alzheimer's pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (mild atrophy is notable for age, but biomarkers and MMSE support normal cognition)",
  "timestamp": "2025-07-26T03:29:05.042169"
}