{
  "ptid_time": "127_S_1382_2007-10-19",
  "img_path": "/data/qiuhui/data/adni/images/127_S_1382/2007-10-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 75,990 mm³, 153.1% above the reference mean. With a Z-score of 3.64 (100.0th percentile), this represents profound enlargement; hippocampal volume measures 7,358 mm³, 8.3% below the reference mean. With a Z-score of -0.83 (20.2th percentile), this represents normal volume ; whole brain volume measures 1,075,600 mm³, 5.2% below the reference mean. With a Z-score of -0.74 (23.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,402 mm³, 3.3% above the reference mean. With a Z-score of 0.23 (58.9th percentile), this represents normal volume ; fusiform gyrus volume measures 19,427 mm³, 2.4% below the reference mean. With a Z-score of -0.20 (42.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,869 mm³, 24.7% below the reference mean. With a Z-score of -2.04 (2.1th percentile), this represents significant atrophy. ",
  "text_data": "Age is 64.8 years. Gender is Male. Education: 16 years. MMSE: 18.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The patient shows profound ventricular enlargement (Z-score 3.64) and significant atrophy in the middle temporal gyrus (Z-score -2.04), which are strong indicators of neurodegeneration. The MMSE score of 18.0 is consistent with moderate cognitive impairment, supporting a dementia diagnosis despite normal hippocampal and most other regional volumes.  \n\n**Diagnosis:** Dementia  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:07:54.796209"
}