{
  "ptid_time": "014_S_0520_2006-12-20",
  "img_path": "/data/qiuhui/data/adni/images/014_S_0520/2006-12-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,627 mm³, 30.1% below the reference mean. With a Z-score of -0.69 (24.6th percentile), this represents normal volume ; whole brain volume measures 1,108,320 mm³, 13.7% above the reference mean. With a Z-score of 1.73 (95.8th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 78.2 years. Gender is Female. Education: 16 years. MMSE: 29.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is within normal limits, and the whole brain volume is moderately enlarged, which is atypical for Alzheimer's. The MMSE score of 29 is in the normal range, and while the presence of two APOE4 alleles increases Alzheimer's risk, there is no cognitive or structural evidence of impairment.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to conflicting factors—APOE4 risk vs. normal cognitive and structural findings)",
  "timestamp": "2025-07-25T23:41:09.866181"
}