{
  "ptid_time": "098_S_0896_2007-04-14",
  "img_path": "/data/qiuhui/data/adni/images/098_S_0896/2007-04-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 53,148 mm³, 38.0% above the reference mean. With a Z-score of 0.91 (81.9th percentile), this represents normal volume ; whole brain volume measures 1,146,640 mm³, 6.2% above the reference mean. With a Z-score of 0.81 (79.1th percentile), this represents normal volume . ",
  "text_data": "Age is 77.3 years. Gender is Male. Education: 16 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volumes (ventricular and whole brain) are within normal ranges, and the MMSE score of 30/30 indicates no cognitive impairment. The absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T10:42:14.085384"
}