{
  "ptid_time": "041_S_4014_2012-05-30",
  "img_path": "/data/qiuhui/data/adni/images/041_S_4014/2012-05-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 57,488 mm³, 22.3% above the reference mean. With a Z-score of 0.65 (74.1th percentile), this represents normal volume ; hippocampal volume measures 7,810 mm³, 12.1% above the reference mean. With a Z-score of 1.04 (85.2th percentile), this represents mild enlargement; whole brain volume measures 1,139,210 mm³, 10.7% above the reference mean. With a Z-score of 1.40 (91.9th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,503 mm³, 11.7% below the reference mean. With a Z-score of -0.77 (22.1th percentile), this represents normal volume ; fusiform gyrus volume measures 24,117 mm³, 33.5% above the reference mean. With a Z-score of 2.90 (99.8th percentile), this represents significant enlargement; middle temporal gyrus volume measures 23,003 mm³, 14.0% above the reference mean. With a Z-score of 1.26 (89.6th percentile), this represents mild enlargement. ",
  "text_data": "Age is 81.7 years. Gender is Male. Education: 16 years. MMSE: 29.0. MoCA: 22.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volumes show mixed findings—some regions (hippocampus, whole brain, fusiform gyrus, middle temporal gyrus) are mildly to significantly enlarged, while the entorhinal cortex is slightly below average. The MMSE is normal (29/30), but the MoCA (22/30) suggests mild cognitive impairment. The absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (MoCA supports MCI, but structural findings are atypical with enlargement rather than atrophy in key regions).",
  "timestamp": "2025-07-26T07:09:33.724273"
}