{
  "ptid_time": "072_S_4539_2012-09-05",
  "img_path": "/data/qiuhui/data/adni/images/072_S_4539/2012-09-05/t1.nii.gz",
  "img_finding": "Image findings: hippocampal volume measures 6,434 mm³, 16.3% below the reference mean. With a Z-score of -1.83 (3.4th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 66.9 years. Gender is Female. Education: 20 years. MMSE: 28.0. MoCA: 25.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume shows moderate atrophy (Z-score -1.83, 3.4th percentile), which is concerning for early neurodegeneration. However, cognitive scores (MMSE 28, MoCA 25) are within normal limits, and the absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)** (structural changes present but no significant cognitive decline yet).  \n\n**Confidence:** **Medium** (cognitive scores are borderline, and hippocampal atrophy alone is not definitive for MCI without stronger clinical correlation).",
  "timestamp": "2025-07-26T09:24:25.494569"
}