{
  "ptid_time": "014_S_0520_2008-06-26",
  "img_path": "/data/qiuhui/data/adni/images/014_S_0520/2008-06-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,943 mm³, 28.9% below the reference mean. With a Z-score of -0.66 (25.4th percentile), this represents normal volume ; whole brain volume measures 1,089,450 mm³, 11.8% above the reference mean. With a Z-score of 1.48 (93.1th percentile), this represents mild enlargement. ",
  "text_data": "Age is 79.7 years. Gender is Female. Education: 16 years. MMSE: 30.0. Logical Memory: 15.0. Laboratory findings: . APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is within normal range, and the whole brain volume is mildly enlarged, which is atypical for Alzheimer's. The MMSE score of 30 is perfect, and the presence of two APOE4 alleles increases genetic risk but does not confirm disease.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to conflicting factors—normal brain structure but high genetic risk)",
  "timestamp": "2025-07-25T23:41:29.083675"
}