{
  "ptid_time": "130_S_1200_2007-01-15",
  "img_path": "/data/qiuhui/data/adni/images/130_S_1200/2007-01-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 60,313 mm³, 28.3% above the reference mean. With a Z-score of 0.82 (79.4th percentile), this represents normal volume ; whole brain volume measures 1,125,500 mm³, 9.4% above the reference mean. With a Z-score of 1.23 (89.0th percentile), this represents mild enlargement. ",
  "text_data": "Age is 84.4 years. Gender is Male. Education: 16 years. MMSE: 30.0. Logical Memory: 19.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 1542.00 pg/mL (mild elevated); Total tau: 203.30 pg/mL (normal ); Phosphorylated tau: 19.86 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volumes (ventricular and whole brain) are within normal to mildly enlarged ranges, and the MMSE score of 30 is intact. While Aβ is mildly elevated, tau markers (T-tau and P-tau) are normal, suggesting no strong evidence of neurodegeneration.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mildly elevated Aβ, but no cognitive or structural deficits)",
  "timestamp": "2025-07-26T14:34:17.148143"
}