{
  "ptid_time": "013_S_1035_2009-11-18",
  "img_path": "/data/qiuhui/data/adni/images/013_S_1035/2009-11-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 49,120 mm³, 0.5% above the reference mean. With a Z-score of 0.04 (51.8th percentile), this represents normal volume ; whole brain volume measures 902,135 mm³, 9.9% below the reference mean. With a Z-score of -1.69 (4.5th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 90.2 years. Gender is Male. Education: 20 years. MMSE: 29.0. Logical Memory: 21.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The whole brain volume shows moderate atrophy (Z-score -1.69, 4.5th percentile), which is concerning, but the MMSE score of 29 is within the normal range (≥26), and ventricular volume is normal. Given the advanced age (90.2), some atrophy is expected.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to conflicting markers—atrophy vs. intact cognition)",
  "timestamp": "2025-07-25T23:24:55.891296"
}