{
  "ptid_time": "007_S_1206_2013-02-20",
  "img_path": "/data/qiuhui/data/adni/images/007_S_1206/2013-02-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 57,842 mm³, 50.2% above the reference mean. With a Z-score of 1.20 (88.5th percentile), this represents mild enlargement; whole brain volume measures 1,041,960 mm³, 3.5% below the reference mean. With a Z-score of -0.45 (32.6th percentile), this represents normal volume . ",
  "text_data": "Age is 78.9 years. Gender is Male. Education: 14 years. MMSE: 26.0. MoCA: 27.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is mildly enlarged (50.2% above reference mean, Z-score 1.20), while whole brain volume is within normal limits (Z-score -0.45). Cognitive scores (MMSE 26, MoCA 27) are borderline but still within normal range for age, and the absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (due to borderline cognitive scores and mild ventricular enlargement, but no clear evidence of MCI or dementia)",
  "timestamp": "2025-07-25T21:53:16.000667"
}