{
  "ptid_time": "116_S_0657_2007-08-29",
  "img_path": "/data/qiuhui/data/adni/images/116_S_0657/2007-08-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 37,646 mm³, 34.1% above the reference mean. With a Z-score of 0.78 (78.3th percentile), this represents normal volume ; whole brain volume measures 1,034,720 mm³, 6.2% above the reference mean. With a Z-score of 0.78 (78.1th percentile), this represents normal volume . ",
  "text_data": "Age is 78.7 years. Gender is Female. Education: 13 years. MMSE: 28.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 1608.00 pg/mL (moderate elevated); Total tau: 196.80 pg/mL (normal ); Phosphorylated tau: 15.59 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volumes (ventricular and whole brain) are within normal ranges, and the MMSE score of 28 is within the normal cognitive range. However, moderate elevation of Aβ suggests amyloid pathology, though tau markers (T-tau, P-tau) are normal, which is atypical for Alzheimer's disease.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to conflicting Aβ elevation but normal cognition and tau levels)",
  "timestamp": "2025-07-26T11:56:58.487765"
}