{
  "ptid_time": "082_S_4208_2012-03-12",
  "img_path": "/data/qiuhui/data/adni/images/082_S_4208/2012-03-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 61,984 mm³, 60.9% above the reference mean. With a Z-score of 1.46 (92.8th percentile), this represents mild enlargement; hippocampal volume measures 6,497 mm³, 14.1% below the reference mean. With a Z-score of -1.37 (8.5th percentile), this represents mild atrophy; whole brain volume measures 1,074,520 mm³, 0.5% below the reference mean. With a Z-score of -0.06 (47.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,123 mm³, 0.5% above the reference mean. With a Z-score of 0.04 (51.5th percentile), this represents normal volume ; fusiform gyrus volume measures 22,163 mm³, 17.6% above the reference mean. With a Z-score of 1.50 (93.4th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 22,232 mm³, 4.2% above the reference mean. With a Z-score of 0.38 (64.7th percentile), this represents normal volume . ",
  "text_data": "Age is 78.7 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The patient shows mild hippocampal atrophy (Z-score -1.37, 8.5th percentile) and mild ventricular enlargement (Z-score 1.46, 92.8th percentile), which are suggestive of early neurodegenerative changes. However, cognitive scores (MMSE 30, MoCA 28) are intact, and there is no APOE4 risk allele, making dementia unlikely at this stage.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (Structural changes are present, but cognitive performance remains normal, requiring further longitudinal monitoring.)",
  "timestamp": "2025-07-26T10:05:26.779239"
}