{
  "ptid_time": "041_S_1002_2010-01-13",
  "img_path": "/data/qiuhui/data/adni/images/041_S_1002/2010-01-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 59,403 mm³, 111.6% above the reference mean. With a Z-score of 2.56 (99.5th percentile), this represents significant enlargement; whole brain volume measures 1,029,420 mm³, 5.6% above the reference mean. With a Z-score of 0.71 (76.0th percentile), this represents normal volume . ",
  "text_data": "Age is 79.3 years. Gender is Female. Education: 18 years. MMSE: 29.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Pittsburgh compound B: 1.27 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is significantly enlarged (Z-score 2.56, 99.5th percentile), which is often associated with neurodegeneration, but the whole brain volume is normal (Z-score 0.71). The MMSE score of 29 is within the normal range, and the absence of APOE4 reduces genetic risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to conflicting markers—ventricular enlargement suggests possible early pathology, but cognitive and genetic markers are normal)",
  "timestamp": "2025-07-26T07:02:59.142010"
}