{
  "ptid_time": "003_S_4644_2019-06-21",
  "img_path": "/data/qiuhui/data/adni/images/003_S_4644/2019-06-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,970 mm³, 3.9% below the reference mean. With a Z-score of -0.09 (46.4th percentile), this represents normal volume ; whole brain volume measures 985,821 mm³, 1.1% above the reference mean. With a Z-score of 0.14 (55.7th percentile), this represents normal volume . ",
  "text_data": "Age is 74.6 years. Gender is Female. Education: 14 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 14.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volumes (ventricular and whole brain) are within normal ranges, and cognitive test scores (MMSE 29, MoCA 28) are well above typical impairment thresholds. APOE4 carrier status and normal AV45 (amyloid PET) suggest no significant amyloid pathology.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:55:40.465675"
}