{
  "ptid_time": "037_S_5222_2019-09-23",
  "img_path": "/data/qiuhui/data/adni/images/037_S_5222/2019-09-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,756 mm³, 26.1% below the reference mean. With a Z-score of -0.60 (27.5th percentile), this represents normal volume ; whole brain volume measures 954,736 mm³, 2.0% below the reference mean. With a Z-score of -0.26 (39.8th percentile), this represents normal volume . ",
  "text_data": "Age is 73.5 years. Gender is Female. Education: 12 years. MMSE: 30.0. MoCA: 23.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.03 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volumes (ventricular and whole brain) are within normal ranges, and the AV45 scan (amyloid PET) is normal. However, the MoCA score of 23 suggests mild cognitive impairment, while the MMSE of 30 is normal, indicating possible early cognitive changes. The absence of APOE4 and normal amyloid further reduce Alzheimer's likelihood.  \n\n**Diagnosis:** **MCI** (Mild Cognitive Impairment)  \n**Confidence:** **Medium** (due to conflicting MMSE/MoCA results but normal biomarkers)",
  "timestamp": "2025-07-26T06:52:39.258201"
}