{
  "ptid_time": "098_S_0896_2008-11-03",
  "img_path": "/data/qiuhui/data/adni/images/098_S_0896/2008-11-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 55,279 mm³, 43.5% above the reference mean. With a Z-score of 1.04 (85.1th percentile), this represents mild enlargement; hippocampal volume measures 6,627 mm³, 12.3% below the reference mean. With a Z-score of -1.20 (11.5th percentile), this represents mild atrophy; whole brain volume measures 1,136,350 mm³, 5.3% above the reference mean. With a Z-score of 0.68 (75.3th percentile), this represents normal volume ; entorhinal cortex volume measures 2,956 mm³, 27.9% below the reference mean. With a Z-score of -1.89 (2.9th percentile), this represents moderate atrophy; fusiform gyrus volume measures 18,633 mm³, 1.1% below the reference mean. With a Z-score of -0.09 (46.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,515 mm³, 10.2% above the reference mean. With a Z-score of 0.92 (82.0th percentile), this represents normal volume . ",
  "text_data": "Age is 78.8 years. Gender is Male. Education: 16 years. MMSE: 30.0. Logical Memory: 7.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The patient shows mild hippocampal atrophy (Z-score -1.20) and moderate entorhinal cortex atrophy (Z-score -1.89), both of which are associated with early Alzheimer's pathology. However, the MMSE score of 30 is normal, and there are no reported cognitive symptoms, suggesting preserved cognitive function despite structural changes.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to structural atrophy without clinical symptoms)",
  "timestamp": "2025-07-26T10:42:30.288365"
}