{
  "ptid_time": "098_S_4275_2014-02-04",
  "img_path": "/data/qiuhui/data/adni/images/098_S_4275/2014-02-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 47,875 mm³, 24.3% above the reference mean. With a Z-score of 0.58 (72.0th percentile), this represents normal volume ; hippocampal volume measures 7,900 mm³, 4.5% above the reference mean. With a Z-score of 0.44 (67.0th percentile), this represents normal volume ; whole brain volume measures 1,193,400 mm³, 10.6% above the reference mean. With a Z-score of 1.37 (91.5th percentile), this represents mild enlargement. ",
  "text_data": "Age is 74.8 years. Gender is Male. Education: 18 years. MMSE: 29.0. MoCA: 25.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.94 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volumes (ventricular, hippocampal, and whole brain) are all within normal to mildly enlarged ranges, with no significant atrophy. The MMSE score of 29 is normal, while the MoCA score of 25 suggests possible mild cognitive impairment (MCI), but the absence of APOE4 and only mild AV45 reduction lowers Alzheimer's risk.  \n\n**Diagnosis:** MCI  \n**Confidence:** Medium",
  "timestamp": "2025-07-26T10:49:06.269914"
}