{
  "ptid_time": "022_S_0096_2006-08-31",
  "img_path": "/data/qiuhui/data/adni/images/022_S_0096/2006-08-31/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 74,324 mm³, 58.1% above the reference mean. With a Z-score of 1.69 (95.4th percentile), this represents moderate enlargement; hippocampal volume measures 7,095 mm³, 1.8% above the reference mean. With a Z-score of 0.16 (56.3th percentile), this represents normal volume ; whole brain volume measures 1,084,880 mm³, 5.4% above the reference mean. With a Z-score of 0.71 (76.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,745 mm³, 5.6% below the reference mean. With a Z-score of -0.37 (35.6th percentile), this represents normal volume ; fusiform gyrus volume measures 18,696 mm³, 3.5% above the reference mean. With a Z-score of 0.30 (61.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,642 mm³, 12.2% above the reference mean. With a Z-score of 1.10 (86.4th percentile), this represents mild enlargement. ",
  "text_data": "Age is 80.1 years. Gender is Male. Education: 20 years. MMSE: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume shows moderate enlargement (Z-score 1.69), which can indicate atrophy, but hippocampal and whole brain volumes are within normal ranges. The MMSE score of 29 is intact, and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (ventricular enlargement is notable, but other markers and cognitive performance suggest no impairment)",
  "timestamp": "2025-07-26T02:00:16.327284"
}