{
  "ptid_time": "128_S_0227_2007-05-03",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0227/2007-05-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 49,178 mm³, 33.0% above the reference mean. With a Z-score of 0.89 (81.4th percentile), this represents normal volume ; whole brain volume measures 912,874 mm³, 1.6% below the reference mean. With a Z-score of -0.20 (42.2th percentile), this represents normal volume . ",
  "text_data": "Age is 80.6 years. Gender is Female. Education: 12 years. MMSE: 25.0. Logical Memory: 0.0. APOEε4 alleles: 2.0. Biomarker levels: Pittsburgh compound B: 1.88 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is slightly elevated but still within the normal range, and the whole brain volume is only marginally below the reference mean. The MMSE score of 25 is borderline, but given the normal brain volumes and the absence of significant atrophy, this is more likely age-related cognitive changes rather than dementia. The presence of two APOE4 alleles increases Alzheimer's risk but does not confirm dementia alone.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium",
  "timestamp": "2025-07-26T13:39:37.204754"
}