{
  "ptid_time": "023_S_4035_2012-03-21",
  "img_path": "/data/qiuhui/data/adni/images/023_S_4035/2012-03-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 64,624 mm³, 130.2% above the reference mean. With a Z-score of 2.98 (99.9th percentile), this represents significant enlargement; hippocampal volume measures 7,255 mm³, 2.0% above the reference mean. With a Z-score of 0.18 (57.2th percentile), this represents normal volume ; whole brain volume measures 963,756 mm³, 1.1% below the reference mean. With a Z-score of -0.14 (44.4th percentile), this represents normal volume . ",
  "text_data": "Age is 73.1 years. Gender is Female. Education: 16 years. MMSE: 25.0. MoCA: 22.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The significant ventricular enlargement (Z-score 2.98) suggests atrophy, while hippocampal and whole brain volumes are within normal limits. The MMSE (25) and MoCA (22) scores indicate mild cognitive impairment, and the presence of one APOE4 allele increases Alzheimer's risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (Cognitive scores align with MCI, but structural changes are not yet severe enough for dementia diagnosis.)",
  "timestamp": "2025-07-26T03:01:29.523633"
}