{
  "ptid_time": "021_S_4276_2017-04-12",
  "img_path": "/data/qiuhui/data/adni/images/021_S_4276/2017-04-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,496 mm³, 12.2% above the reference mean. With a Z-score of 0.28 (61.0th percentile), this represents normal volume ; whole brain volume measures 953,950 mm³, 2.1% below the reference mean. With a Z-score of -0.27 (39.5th percentile), this represents normal volume . ",
  "text_data": "Age is 79.4 years. Gender is Female. Education: 12 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 20.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 0.91 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume and whole brain volume are within normal ranges, and cognitive scores (MMSE 30, MoCA 29) are intact. The mild reduction in AV45 (amyloid PET) suggests some amyloid deposition, but without significant cognitive impairment or structural atrophy, this does not meet criteria for MCI or dementia.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to mild amyloid burden but preserved cognition and brain structure)",
  "timestamp": "2025-07-26T01:43:46.751240"
}