{
  "ptid_time": "130_S_0423_2007-02-12",
  "img_path": "/data/qiuhui/data/adni/images/130_S_0423/2007-02-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 64,227 mm³, 66.7% above the reference mean. With a Z-score of 1.60 (94.5th percentile), this represents moderate enlargement; whole brain volume measures 1,026,090 mm³, 4.9% below the reference mean. With a Z-score of -0.64 (26.1th percentile), this represents normal volume . ",
  "text_data": "Age is 79.8 years. Gender is Male. Education: 20 years. MMSE: 27.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is moderately enlarged (66.7% above mean, Z-score 1.60), suggesting possible atrophy, while whole brain volume is within normal limits (Z-score -0.64). The MMSE score of 27 is near-normal, and the presence of one APOE4 allele increases Alzheimer's risk but does not confirm pathology.  \nDiagnosis: **MCI** (mild cognitive impairment) – structural changes are present, but cognitive performance remains relatively intact.  \nConfidence: **Medium** (imaging suggests neurodegeneration, but cognitive testing does not yet meet dementia criteria).",
  "timestamp": "2025-07-26T14:28:01.297983"
}