{
  "ptid_time": "052_S_0951_2008-11-12",
  "img_path": "/data/qiuhui/data/adni/images/052_S_0951/2008-11-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 96,341 mm³, 104.9% above the reference mean. With a Z-score of 3.05 (99.9th percentile), this represents profound enlargement; whole brain volume measures 1,023,060 mm³, 0.6% below the reference mean. With a Z-score of -0.08 (46.9th percentile), this represents normal volume . ",
  "text_data": "Age is 86.8 years. Gender is Male. Education: 18 years. MMSE: 29.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is significantly enlarged (Z-score 3.05), which is often associated with brain atrophy, but the whole brain volume is normal (Z-score -0.08). The MMSE score of 29 is within the normal range, and there is no APOE4 genetic risk factor.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular enlargement is notable, but cognitive performance and other markers do not suggest impairment)",
  "timestamp": "2025-07-26T07:40:43.447319"
}