{
  "ptid_time": "027_S_4964_2013-10-08",
  "img_path": "/data/qiuhui/data/adni/images/027_S_4964/2013-10-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 53,437 mm³, 13.7% above the reference mean. With a Z-score of 0.40 (65.4th percentile), this represents normal volume ; hippocampal volume measures 4,546 mm³, 34.8% below the reference mean. With a Z-score of -3.00 (0.1th percentile), this represents profound atrophy; whole brain volume measures 883,564 mm³, 14.1% below the reference mean. With a Z-score of -1.85 (3.2th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 81.9 years. Gender is Male. Education: 16 years. MMSE: 22.0. MoCA: 13.0. Logical Memory: 0.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume shows profound atrophy (Z-score -3.00, 0.1th percentile), which is strongly associated with Alzheimer's pathology. Whole brain volume also indicates moderate atrophy (Z-score -1.85, 3.2th percentile). Clinically, the patient has significant cognitive impairment (MMSE 22, MoCA 13), consistent with dementia rather than MCI.  \n\n**Diagnosis:** Dementia (likely Alzheimer’s disease given hippocampal atrophy)  \n**Confidence:** High",
  "timestamp": "2025-07-26T04:05:39.762989"
}