{
  "ptid_time": "073_S_0565_2007-02-21",
  "img_path": "/data/qiuhui/data/adni/images/073_S_0565/2007-02-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 88,103 mm³, 128.7% above the reference mean. With a Z-score of 3.08 (99.9th percentile), this represents profound enlargement; hippocampal volume measures 4,771 mm³, 36.9% below the reference mean. With a Z-score of -3.60 (0.0th percentile), this represents profound atrophy; whole brain volume measures 961,709 mm³, 10.9% below the reference mean. With a Z-score of -1.42 (7.8th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,248 mm³, 20.8% below the reference mean. With a Z-score of -1.41 (7.9th percentile), this represents mild atrophy; fusiform gyrus volume measures 14,511 mm³, 23.0% below the reference mean. With a Z-score of -1.96 (2.5th percentile), this represents moderate atrophy; middle temporal gyrus volume measures 16,645 mm³, 22.0% below the reference mean. With a Z-score of -1.98 (2.4th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 75.1 years. Gender is Male. Education: 14 years. MMSE: 15.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The data shows profound hippocampal atrophy (Z-score -3.60) and ventricular enlargement (Z-score 3.08), both strongly associated with Alzheimer's disease. The MMSE score of 15 indicates significant cognitive impairment, and the presence of two APOE4 alleles further increases Alzheimer's risk.  \n\n**Diagnosis:** Dementia (likely Alzheimer’s disease)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:33:42.136753"
}