{
  "ptid_time": "133_S_0727_2007-09-19",
  "img_path": "/data/qiuhui/data/adni/images/133_S_0727/2007-09-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 64,946 mm³, 131.4% above the reference mean. With a Z-score of 3.01 (99.9th percentile), this represents profound enlargement; whole brain volume measures 1,018,110 mm³, 4.5% above the reference mean. With a Z-score of 0.56 (71.3th percentile), this represents normal volume . ",
  "text_data": "Age is 70.2 years. Gender is Female. Education: 12 years. MMSE: 25.0. Logical Memory: 9.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is significantly enlarged (Z-score 3.01, 99.9th percentile), indicating substantial atrophy, while whole brain volume remains normal. The MMSE score of 25 is borderline, and the presence of two APOE4 alleles increases Alzheimer's risk.  \n**Diagnosis:** **Mild Cognitive Impairment (MCI)** (likely prodromal Alzheimer's given APOE4 status and ventricular enlargement).  \n**Confidence:** **Medium** (clinical correlation needed to rule out other causes of ventricular enlargement).",
  "timestamp": "2025-07-26T15:24:42.003993"
}