{
  "ptid_time": "014_S_6199_2019-05-20",
  "img_path": "/data/qiuhui/data/adni/images/014_S_6199/2019-05-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 79,129 mm³, 105.4% above the reference mean. With a Z-score of 2.53 (99.4th percentile), this represents significant enlargement; whole brain volume measures 1,019,400 mm³, 5.6% below the reference mean. With a Z-score of -0.72 (23.5th percentile), this represents normal volume . ",
  "text_data": "Age is 70.1 years. Gender is Male. Education: 16 years. MMSE: 26.0. MoCA: 20.0. Logical Memory: 6.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is significantly enlarged (105.4% above mean, Z-score 2.53), suggesting atrophy, while whole brain volume is within normal limits (Z-score -0.72). Cognitive scores show mild impairment (MoCA 20/30, MMSE 26/30), and the presence of two APOE4 alleles increases Alzheimer's risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)** (likely prodromal Alzheimer’s given APOE4 and ventricular enlargement).  \n\n**Confidence:** **Medium** (cognitive scores are borderline, but structural changes and genetic risk support MCI due to Alzheimer’s pathology).",
  "timestamp": "2025-07-25T23:59:19.546928"
}