{
  "ptid_time": "002_S_1261_2010-02-25",
  "img_path": "/data/qiuhui/data/adni/images/002_S_1261/2010-02-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 38,876 mm³, 38.5% above the reference mean. With a Z-score of 0.88 (81.1th percentile), this represents normal volume ; whole brain volume measures 993,399 mm³, 1.9% above the reference mean. With a Z-score of 0.24 (59.6th percentile), this represents normal volume . ",
  "text_data": "Age is 74.1 years. Gender is Female. Education: 16 years. MMSE: 30.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular and whole brain volumes are within normal ranges (Z-scores close to 0, percentiles near 50th), and the MMSE score of 30 is optimal. No APOE4 alleles further reduce Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:13:08.779166"
}