{
  "ptid_time": "116_S_4625_2012-10-19",
  "img_path": "/data/qiuhui/data/adni/images/116_S_4625/2012-10-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,344 mm³, 7.7% above the reference mean. With a Z-score of 0.18 (57.3th percentile), this represents normal volume ; hippocampal volume measures 7,770 mm³, 3.2% below the reference mean. With a Z-score of -0.32 (37.4th percentile), this represents normal volume ; whole brain volume measures 1,044,100 mm³, 8.0% below the reference mean. With a Z-score of -1.13 (13.0th percentile), this represents mild atrophy. ",
  "text_data": "Age is 64.3 years. Gender is Male. Education: 16 years. MMSE: 22.0. MoCA: 20.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The patient shows mild whole brain atrophy (Z-score -1.13, 13th percentile) but normal hippocampal and ventricular volumes. Cognitive testing (MMSE 22, MoCA 20) indicates mild impairment, and the presence of two APOE4 alleles increases Alzheimer's risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (Cognitive scores suggest impairment, but structural changes are not yet severe enough for a dementia diagnosis.)",
  "timestamp": "2025-07-26T12:12:55.040159"
}