{
  "ptid_time": "137_S_0841_2006-09-27",
  "img_path": "/data/qiuhui/data/adni/images/137_S_0841/2006-09-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 15,819 mm³, 43.6% below the reference mean. With a Z-score of -1.00 (15.9th percentile), this represents normal volume ; whole brain volume measures 904,895 mm³, 7.2% below the reference mean. With a Z-score of -0.90 (18.4th percentile), this represents normal volume . ",
  "text_data": "Age is 77.0 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. Medical history: Psychiatric; Head, Eyes, Ears, Nose and Throat; Musculoskeletal; Smoking. MMSE: 26.0. Logical Memory: 0.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The ventricular and whole brain volumes are within normal ranges (Z-scores close to -1.0, percentiles ~15-18th), and the MMSE score of 26 is borderline but not definitively impaired. The presence of one APOE4 allele increases Alzheimer's risk but does not confirm pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (MMSE is slightly low for age, but structural imaging is normal)",
  "timestamp": "2025-07-26T16:19:52.209263"
}