{
  "ptid_time": "035_S_4464_2012-08-03",
  "img_path": "/data/qiuhui/data/adni/images/035_S_4464/2012-08-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,737 mm³, 33.2% below the reference mean. With a Z-score of -0.79 (21.3th percentile), this represents normal volume ; hippocampal volume measures 8,842 mm³, 17.0% above the reference mean. With a Z-score of 1.66 (95.1th percentile), this represents moderate enlargement; whole brain volume measures 1,080,980 mm³, 0.1% above the reference mean. With a Z-score of 0.02 (50.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,376 mm³, 17.7% below the reference mean. With a Z-score of -1.20 (11.5th percentile), this represents mild atrophy; fusiform gyrus volume measures 20,846 mm³, 10.7% above the reference mean. With a Z-score of 0.91 (81.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 24,244 mm³, 13.6% above the reference mean. With a Z-score of 1.22 (88.9th percentile), this represents mild enlargement. ",
  "text_data": "Age is 70.9 years. Gender is Male. Education: 16 years. MMSE: 29.0. MoCA: 29.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is moderately enlarged (95.1th percentile), while the entorhinal cortex shows mild atrophy (11.5th percentile). Cognitive scores (MMSE 29, MoCA 29) are intact, and other brain volumes are largely normal.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (Atypical hippocampal enlargement may warrant further investigation, but cognitive performance is preserved.)",
  "timestamp": "2025-07-26T05:57:01.273207"
}