{
  "ptid_time": "041_S_1002_2007-12-11",
  "img_path": "/data/qiuhui/data/adni/images/041_S_1002/2007-12-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 57,277 mm³, 104.1% above the reference mean. With a Z-score of 2.38 (99.1th percentile), this represents significant enlargement; whole brain volume measures 1,047,300 mm³, 7.5% above the reference mean. With a Z-score of 0.94 (82.6th percentile), this represents normal volume . ",
  "text_data": "Age is 77.3 years. Gender is Female. Education: 18 years. MMSE: 29.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Pittsburgh compound B: 1.31 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The significant ventricular enlargement (Z-score 2.38) suggests possible atrophy, but the whole brain volume is normal (Z-score 0.94). The MMSE score of 29 is within the normal range, and the absence of APOE4 reduces genetic risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular enlargement raises some concern, but cognitive performance is intact)",
  "timestamp": "2025-07-26T07:02:38.040687"
}