{
  "ptid_time": "016_S_0538_2009-08-17",
  "img_path": "/data/qiuhui/data/adni/images/016_S_0538/2009-08-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 66,778 mm³, 42.0% above the reference mean. With a Z-score of 1.22 (88.9th percentile), this represents mild enlargement; whole brain volume measures 1,026,660 mm³, 0.2% below the reference mean. With a Z-score of -0.03 (48.7th percentile), this represents normal volume . ",
  "text_data": "Age is 85.7 years. Gender is Male. Education: 16 years. MMSE: 28.0. Logical Memory: 6.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is mildly enlarged (42.0% above reference mean, Z-score 1.22), which can indicate atrophy, but whole brain volume is normal (Z-score -0.03). The MMSE score of 28 is within the normal range, and there is no APOE4 genetic risk factor.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular enlargement could suggest early changes, but cognitive performance is intact)",
  "timestamp": "2025-07-26T00:03:15.057353"
}