{
  "ptid_time": "021_S_4254_2015-10-01",
  "img_path": "/data/qiuhui/data/adni/images/021_S_4254/2015-10-01/t1.nii.gz",
  "img_finding": "Image findings: hippocampal volume measures 4,686 mm³, 27.9% below the reference mean. With a Z-score of -2.23 (1.3th percentile), this represents significant atrophy; whole brain volume measures 826,711 mm³, 10.9% below the reference mean. With a Z-score of -1.31 (9.5th percentile), this represents mild atrophy. ",
  "text_data": "Age is 89.9 years. Gender is Female. Education: 12 years. MMSE: 26.0. MoCA: 23.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The hippocampal volume shows significant atrophy (Z-score -2.23, 1.3th percentile), which is strongly associated with Alzheimer's pathology. The MMSE (26) and MoCA (23) scores indicate mild cognitive impairment, though not severe dementia. The absence of APOE4 reduces genetic risk but does not rule out AD given the structural findings.  \n\nDiagnosis: **MCI** (likely due to Alzheimer's pathology)  \nConfidence: **High**",
  "timestamp": "2025-07-26T01:42:50.799000"
}