{
  "ptid_time": "062_S_0535_2008-06-17",
  "img_path": "/data/qiuhui/data/adni/images/062_S_0535/2008-06-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 62,210 mm³, 61.5% above the reference mean. With a Z-score of 1.47 (93.0th percentile), this represents mild enlargement; hippocampal volume measures 4,343 mm³, 42.5% below the reference mean. With a Z-score of -4.15 (0.0th percentile), this represents profound atrophy; whole brain volume measures 999,169 mm³, 7.4% below the reference mean. With a Z-score of -0.96 (16.7th percentile), this represents normal volume ; entorhinal cortex volume measures 2,953 mm³, 28.0% below the reference mean. With a Z-score of -1.90 (2.9th percentile), this represents moderate atrophy; fusiform gyrus volume measures 16,715 mm³, 11.3% below the reference mean. With a Z-score of -0.96 (16.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 15,630 mm³, 26.8% below the reference mean. With a Z-score of -2.41 (0.8th percentile), this represents significant atrophy. ",
  "text_data": "Age is 78.8 years. Gender is Male. Education: 15 years. MMSE: 20.0. Logical Memory: 0.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The data shows profound hippocampal atrophy (Z-score -4.15, 0th percentile) and significant atrophy in the middle temporal gyrus (Z-score -2.41, 0.8th percentile), both strongly associated with Alzheimer's pathology. The MMSE score of 20 indicates cognitive impairment, consistent with dementia.  \n\n**Diagnosis:** Dementia (likely Alzheimer’s disease)  \n**Confidence:** High",
  "timestamp": "2025-07-26T08:16:29.769422"
}