{
  "ptid_time": "116_S_0752_2007-02-16",
  "img_path": "/data/qiuhui/data/adni/images/116_S_0752/2007-02-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 45,377 mm³, 22.8% above the reference mean. With a Z-score of 0.61 (73.1th percentile), this represents normal volume ; whole brain volume measures 931,215 mm³, 0.3% above the reference mean. With a Z-score of 0.04 (51.6th percentile), this represents normal volume . ",
  "text_data": "Age is 82.5 years. Gender is Female. Education: 16 years. MMSE: 23.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is slightly elevated but still within the normal range (Z-score 0.61), and whole brain volume is normal (Z-score 0.04). The MMSE score of 23 suggests mild cognitive impairment, which is common at this age (82.5). APOE4 carrier status increases Alzheimer's risk but does not confirm dementia alone.  \n\n**Diagnosis:** **MCI** (Mild Cognitive Impairment)  \n**Confidence:** **Medium** (MMSE supports MCI, but structural brain changes are not strongly indicative of neurodegeneration yet)",
  "timestamp": "2025-07-26T11:57:45.915538"
}