{
  "ptid_time": "098_S_0171_2012-05-12",
  "img_path": "/data/qiuhui/data/adni/images/098_S_0171/2012-05-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 80,419 mm³, 117.6% above the reference mean. With a Z-score of 3.17 (99.9th percentile), this represents profound enlargement; whole brain volume measures 848,870 mm³, 8.5% below the reference mean. With a Z-score of -1.03 (15.3th percentile), this represents mild atrophy. ",
  "text_data": "Age is 84.3 years. Gender is Female. Education: 17 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is significantly enlarged (Z-score 3.17), indicating substantial atrophy, while whole brain volume shows mild atrophy (Z-score -1.03). Despite these structural changes, cognitive scores (MMSE 29, MoCA 26) remain within normal ranges, suggesting preserved cognitive function.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to the discrepancy between structural atrophy and intact cognition, which may indicate preclinical changes)",
  "timestamp": "2025-07-26T10:38:23.475997"
}