{
  "ptid_time": "014_S_0520_2009-06-03",
  "img_path": "/data/qiuhui/data/adni/images/014_S_0520/2009-06-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,965 mm³, 40.6% below the reference mean. With a Z-score of -1.10 (13.7th percentile), this represents mild atrophy; whole brain volume measures 1,099,060 mm³, 18.4% above the reference mean. With a Z-score of 2.21 (98.6th percentile), this represents significant enlargement. ",
  "text_data": "Age is 80.7 years. Gender is Female. Education: 16 years. MMSE: 30.0. Logical Memory: 17.0. APOEε4 alleles: 2.0. Biomarker levels: Amyloid beta: 547.80 pg/mL (mild reduced); Total tau: 242.80 pg/mL (normal ); Phosphorylated tau: 20.61 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume shows mild atrophy, but whole brain volume is significantly enlarged, which is unusual for typical Alzheimer's progression. MMSE is normal (30/30), and biomarkers (Aβ mildly reduced, normal tau) do not strongly support Alzheimer's pathology. APOE4 homozygous status increases risk but does not confirm disease.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to conflicting imaging findings and normal cognition despite APOE4 risk)",
  "timestamp": "2025-07-25T23:41:39.639525"
}