{
  "ptid_time": "041_S_4037_2015-05-28",
  "img_path": "/data/qiuhui/data/adni/images/041_S_4037/2015-05-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 45,094 mm³, 17.1% above the reference mean. With a Z-score of 0.41 (65.9th percentile), this represents normal volume ; hippocampal volume measures 7,944 mm³, 5.1% above the reference mean. With a Z-score of 0.50 (69.0th percentile), this represents normal volume ; whole brain volume measures 1,160,070 mm³, 7.5% above the reference mean. With a Z-score of 0.97 (83.4th percentile), this represents normal volume . ",
  "text_data": "Age is 79.6 years. Gender is Male. Education: 16 years. MMSE: 25.0. MoCA: 23.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.98 SUVR (normal ); Total tau: 232.30 pg/mL (normal ); Phosphorylated tau: 21.09 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, and whole brain) are within normal ranges, with Z-scores indicating no significant atrophy. Cognitive scores (MMSE 25, MoCA 23) are slightly below typical cutoffs but not severely impaired, and biomarkers (T-tau, P-tau, AV45) are normal.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to borderline cognitive scores despite normal biomarkers and imaging)",
  "timestamp": "2025-07-26T07:10:18.498093"
}