{
  "ptid_time": "126_S_0865_2008-11-18",
  "img_path": "/data/qiuhui/data/adni/images/126_S_0865/2008-11-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 102,443 mm³, 166.0% above the reference mean. With a Z-score of 3.98 (100.0th percentile), this represents profound enlargement; whole brain volume measures 1,228,160 mm³, 13.8% above the reference mean. With a Z-score of 1.79 (96.3th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 75.5 years. Gender is Male. Education: 10 years. MMSE: 29.0. Logical Memory: 3.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is significantly enlarged (Z-score 3.98), which is often associated with neurodegeneration, but the whole brain volume is also moderately enlarged (Z-score 1.79), which is atypical for typical Alzheimer's progression. The MMSE score of 29 is within the normal range, and the presence of one APOE4 allele increases risk but does not confirm pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to conflicting imaging findings despite normal cognition)",
  "timestamp": "2025-07-26T12:41:06.779933"
}