{
  "ptid_time": "027_S_6370_2019-09-30",
  "img_path": "/data/qiuhui/data/adni/images/027_S_6370/2019-09-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 59,642 mm³, 112.5% above the reference mean. With a Z-score of 2.58 (99.5th percentile), this represents significant enlargement; whole brain volume measures 1,166,400 mm³, 19.7% above the reference mean. With a Z-score of 2.48 (99.3th percentile), this represents significant enlargement. ",
  "text_data": "Age is 70.8 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 24.0. Logical Memory: 5.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is significantly enlarged (Z-score 2.58), which is often associated with brain atrophy and neurodegenerative processes. However, the whole brain volume is also significantly above average (Z-score 2.48), which is unusual in typical Alzheimer's cases. The MMSE is normal (30/30), but the MoCA (24/30) suggests mild cognitive impairment (MCI). The presence of two APOE4 alleles increases Alzheimer's risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to conflicting imaging findings—ventricular enlargement suggests neurodegeneration, but preserved whole brain volume complicates the interpretation)",
  "timestamp": "2025-07-26T04:13:20.738949"
}