{
  "ptid_time": "041_S_4037_2012-06-04",
  "img_path": "/data/qiuhui/data/adni/images/041_S_4037/2012-06-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 39,205 mm³, 1.8% above the reference mean. With a Z-score of 0.04 (51.7th percentile), this represents normal volume ; hippocampal volume measures 8,063 mm³, 6.7% above the reference mean. With a Z-score of 0.65 (74.2th percentile), this represents normal volume ; whole brain volume measures 1,208,200 mm³, 11.9% above the reference mean. With a Z-score of 1.55 (93.9th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 76.6 years. Gender is Male. Education: 16 years. MMSE: 25.0. MoCA: 23.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measures (ventricular, hippocampal, and whole brain) are all within normal or above-average ranges, with no significant atrophy. Cognitive scores (MMSE: 25, MoCA: 23) are slightly below optimal but not in the dementia range. The absence of APOE4 further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (cognitive scores are borderline but structural imaging is reassuring)",
  "timestamp": "2025-07-26T07:10:03.791631"
}