{
  "ptid_time": "024_S_4674_2013-05-17",
  "img_path": "/data/qiuhui/data/adni/images/024_S_4674/2013-05-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,764 mm³, 43.5% below the reference mean. With a Z-score of -1.04 (14.9th percentile), this represents mild atrophy; hippocampal volume measures 8,068 mm³, 6.7% above the reference mean. With a Z-score of 0.66 (74.4th percentile), this represents normal volume ; whole brain volume measures 1,136,960 mm³, 5.3% above the reference mean. With a Z-score of 0.69 (75.6th percentile), this represents normal volume . ",
  "text_data": "Age is 78.9 years. Gender is Male. Education: 20 years. MMSE: 28.0. MoCA: 24.0. Logical Memory: 13.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal and whole brain volumes are within normal ranges, and ventricular volume shows only mild atrophy. Cognitive scores (MMSE 28, MoCA 24) are borderline for MCI but still relatively preserved. APOE4 carrier status increases Alzheimer's risk but does not confirm pathology alone.  \n\n**Diagnosis:** **MCI** (mild cognitive impairment)  \n**Confidence:** **Medium** (due to borderline cognitive scores and mild atrophy, but no clear dementia-level impairment)",
  "timestamp": "2025-07-26T03:21:44.134751"
}