{
  "ptid_time": "082_S_4339_2012-05-30",
  "img_path": "/data/qiuhui/data/adni/images/082_S_4339/2012-05-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 45,556 mm³, 3.1% below the reference mean. With a Z-score of -0.09 (46.4th percentile), this represents normal volume ; hippocampal volume measures 7,755 mm³, 11.3% above the reference mean. With a Z-score of 0.98 (83.5th percentile), this represents normal volume ; whole brain volume measures 1,077,150 mm³, 4.7% above the reference mean. With a Z-score of 0.61 (72.9th percentile), this represents normal volume . ",
  "text_data": "Age is 84.8 years. Gender is Male. Education: 17 years. MMSE: 29.0. MoCA: 25.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volumes (ventricular, hippocampal, and whole brain) are all within normal ranges, with hippocampal volume even slightly above the mean. Cognitive scores (MMSE 29, MoCA 25) are within normal limits for age, though MoCA is borderline. APOE4 homozygous status increases Alzheimer's risk but does not confirm disease.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to borderline MoCA and APOE4 status, but normal imaging and high MMSE support CN)",
  "timestamp": "2025-07-26T10:07:12.084433"
}