{
  "ptid_time": "094_S_0921_2009-10-06",
  "img_path": "/data/qiuhui/data/adni/images/094_S_0921/2009-10-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 43,340 mm³, 12.5% above the reference mean. With a Z-score of 0.30 (61.8th percentile), this represents normal volume ; whole brain volume measures 1,124,840 mm³, 4.2% above the reference mean. With a Z-score of 0.55 (70.8th percentile), this represents normal volume . ",
  "text_data": "Age is 74.4 years. Gender is Male. Education: 19 years. MMSE: 26.0. Logical Memory: 0.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "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 26 is just below the typical cutoff for mild cognitive impairment (27-30 is normal). The presence of one APOE4 allele increases Alzheimer's risk but does not confirm pathology.  \n**Diagnosis:** Cognitively Normal (CN)  \n**Confidence:** Medium (MMSE slightly low, but imaging and genetic risk alone do not indicate MCI/dementia)",
  "timestamp": "2025-07-26T10:14:25.990866"
}