{
  "ptid_time": "033_S_5017_2013-11-25",
  "img_path": "/data/qiuhui/data/adni/images/033_S_5017/2013-11-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 53,497 mm³, 13.8% above the reference mean. With a Z-score of 0.40 (65.6th percentile), this represents normal volume ; hippocampal volume measures 4,173 mm³, 40.1% below the reference mean. With a Z-score of -3.47 (0.0th percentile), this represents profound atrophy; whole brain volume measures 992,115 mm³, 3.6% below the reference mean. With a Z-score of -0.47 (31.9th percentile), this represents normal volume . ",
  "text_data": "Age is 85.3 years. Gender is Male. Education: 18 years. Handedness: Unknown. Race: Unknown. MMSE: 18.0. MoCA: 16.0. Logical Memory: 0.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The hippocampal volume shows profound atrophy (Z-score -3.47, 0th percentile), which is strongly associated with Alzheimer's disease. The MMSE (18) and MoCA (16) scores indicate significant cognitive impairment, consistent with dementia. Ventricular and whole brain volumes are within normal ranges, but hippocampal atrophy dominates the clinical picture.  \n\nDiagnosis: **Dementia** (likely Alzheimer’s disease given hippocampal atrophy and APOE4 positivity)  \nConfidence: **High**",
  "timestamp": "2025-07-26T05:37:50.359145"
}