{
  "ptid_time": "036_S_6179_2019-05-07",
  "img_path": "/data/qiuhui/data/adni/images/036_S_6179/2019-05-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 66,482 mm³, 41.4% above the reference mean. With a Z-score of 1.20 (88.5th percentile), this represents mild enlargement; hippocampal volume measures 4,026 mm³, 42.2% below the reference mean. With a Z-score of -3.65 (0.0th percentile), this represents profound atrophy; whole brain volume measures 843,730 mm³, 18.0% below the reference mean. With a Z-score of -2.36 (0.9th percentile), this represents significant atrophy; entorhinal cortex volume measures 3,406 mm³, 14.2% below the reference mean. With a Z-score of -0.93 (17.7th percentile), this represents normal volume ; fusiform gyrus volume measures 16,769 mm³, 7.2% below the reference mean. With a Z-score of -0.62 (26.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 15,693 mm³, 22.2% below the reference mean. With a Z-score of -1.99 (2.3th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 80.4 years. Gender is Male. Education: 16 years. MMSE: 21.0. MoCA: 14.0. Logical Memory: 0.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The data shows profound hippocampal atrophy (Z-score -3.65) and significant whole-brain atrophy (Z-score -2.36), both strongly associated with Alzheimer's disease. The cognitive scores (MMSE 21, MoCA 14) indicate moderate cognitive impairment, consistent with dementia rather than MCI.  \n\n**Diagnosis:** Dementia (likely Alzheimer’s disease)  \n**Confidence:** High",
  "timestamp": "2025-07-26T06:22:19.599289"
}