{
  "ptid_time": "128_S_0863_2007-10-17",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0863/2007-10-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 77,521 mm³, 64.9% above the reference mean. With a Z-score of 1.88 (97.0th percentile), this represents moderate enlargement; whole brain volume measures 999,739 mm³, 2.9% below the reference mean. With a Z-score of -0.37 (35.4th percentile), this represents normal volume . ",
  "text_data": "Age is 80.1 years. Gender is Male. Education: 15 years. MMSE: 28.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. Biomarker levels: Pittsburgh compound B: 1.90 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is moderately enlarged (64.9% above reference mean, Z-score 1.88), which can indicate atrophy, but whole brain volume is within normal limits (Z-score -0.37). The MMSE score of 28 is normal, and there is no APOE4 genetic risk factor.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular enlargement raises some concern, but cognitive performance and genetic profile support normal aging)",
  "timestamp": "2025-07-26T13:50:27.141059"
}