{
  "ptid_time": "126_S_4896_2014-09-02",
  "img_path": "/data/qiuhui/data/adni/images/126_S_4896/2014-09-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 37,155 mm³, 3.5% below the reference mean. With a Z-score of -0.08 (46.6th percentile), this represents normal volume ; hippocampal volume measures 7,997 mm³, 5.8% above the reference mean. With a Z-score of 0.57 (71.4th percentile), this represents normal volume ; whole brain volume measures 1,207,940 mm³, 11.9% above the reference mean. With a Z-score of 1.55 (93.9th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 70.1 years. Gender is Male. Education: 12 years. MMSE: 27.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: Ventricular and hippocampal volumes are within normal ranges, and whole brain volume is moderately enlarged, which is atypical for Alzheimer's but not indicative of neurodegeneration. The MMSE score of 27 is within the normal range (≥26), and APOE4 status (heterozygous) does not strongly suggest high risk alone.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to atypical whole brain enlargement but otherwise normal biomarkers and cognitive performance)",
  "timestamp": "2025-07-26T12:51:52.314899"
}