{
  "ptid_time": "007_S_2394_2018-08-07",
  "img_path": "/data/qiuhui/data/adni/images/007_S_2394/2018-08-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 66,476 mm³, 72.6% above the reference mean. With a Z-score of 1.74 (95.9th percentile), this represents moderate enlargement; hippocampal volume measures 7,090 mm³, 6.2% below the reference mean. With a Z-score of -0.61 (27.2th percentile), this represents normal volume ; whole brain volume measures 1,196,780 mm³, 10.9% above the reference mean. With a Z-score of 1.41 (92.1th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,627 mm³, 12.8% above the reference mean. With a Z-score of 0.87 (80.8th percentile), this represents normal volume ; fusiform gyrus volume measures 21,041 mm³, 11.7% above the reference mean. With a Z-score of 1.00 (84.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 27,652 mm³, 29.6% above the reference mean. With a Z-score of 2.66 (99.6th percentile), this represents significant enlargement. ",
  "text_data": "Age is 74.4 years. Gender is Male. Education: 20 years. MMSE: 28.0. MoCA: 27.0. Logical Memory: 16.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is moderately enlarged (Z-score 1.74), which can indicate atrophy, but hippocampal volume is normal (Z-score -0.61), and other regions (entorhinal cortex, fusiform gyrus, middle temporal gyrus) are either normal or enlarged. Cognitive scores (MMSE 28, MoCA 27) are intact, and APOE4 homozygous status increases Alzheimer's risk, but no clear cognitive impairment is present.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (Structural changes suggest possible early neurodegeneration, but cognitive performance remains intact. APOE4 status warrants monitoring.)",
  "timestamp": "2025-07-25T21:57:55.789232"
}