{
  "ptid_time": "137_S_0283_2008-04-14",
  "img_path": "/data/qiuhui/data/adni/images/137_S_0283/2008-04-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,712 mm³, 51.7% below the reference mean. With a Z-score of -1.50 (6.7th percentile), this represents moderate atrophy; hippocampal volume measures 6,752 mm³, 3.1% below the reference mean. With a Z-score of -0.27 (39.4th percentile), this represents normal volume ; whole brain volume measures 1,101,700 mm³, 7.0% above the reference mean. With a Z-score of 0.92 (82.2th percentile), this represents normal volume ; entorhinal cortex volume measures 4,059 mm³, 2.3% above the reference mean. With a Z-score of 0.15 (55.9th percentile), this represents normal volume ; fusiform gyrus volume measures 17,691 mm³, 2.1% below the reference mean. With a Z-score of -0.18 (42.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,778 mm³, 2.0% below the reference mean. With a Z-score of -0.17 (43.1th percentile), this represents normal volume . ",
  "text_data": "Age is 80.4 years. Gender is Male. Education: 12 years. MMSE: 30.0. Logical Memory: 11.0. Laboratory findings: Eosinophils: 5.80 (significant elevated). APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume shows moderate atrophy (Z-score -1.50), but all other brain regions, including the hippocampus, entorhinal cortex, and temporal structures, are within normal ranges. The MMSE score of 30 is intact, and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (ventricular enlargement could suggest early changes, but no other markers support impairment)",
  "timestamp": "2025-07-26T16:07:54.227636"
}