{
  "ptid_time": "131_S_0409_2007-02-08",
  "img_path": "/data/qiuhui/data/adni/images/131_S_0409/2007-02-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 94,818 mm³, 146.2% above the reference mean. With a Z-score of 3.50 (100.0th percentile), this represents profound enlargement; whole brain volume measures 1,065,010 mm³, 1.3% below the reference mean. With a Z-score of -0.17 (43.1th percentile), this represents normal volume . ",
  "text_data": "Age is 79.6 years. Gender is Male. Education: 12 years. MMSE: 26.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is significantly enlarged (Z-score 3.50), which is a strong indicator of neurodegeneration, while whole brain volume is within normal limits. The MMSE score of 26 is borderline but still within the normal range for age, and the presence of one APOE4 allele increases Alzheimer's risk.  \nDiagnosis: **MCI** (Mild Cognitive Impairment)  \nConfidence: **Medium** (ventricular enlargement suggests neurodegeneration, but MMSE is not yet in the dementia range).",
  "timestamp": "2025-07-26T15:05:10.098730"
}