{
  "ptid_time": "137_S_0972_2008-12-02",
  "img_path": "/data/qiuhui/data/adni/images/137_S_0972/2008-12-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,930 mm³, 35.3% below the reference mean. With a Z-score of -0.85 (19.9th percentile), this represents normal volume ; whole brain volume measures 932,940 mm³, 13.6% below the reference mean. With a Z-score of -1.76 (3.9th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 79.9 years. Gender is Male. Education: 16 years. MMSE: 28.0. Logical Memory: 16.0. APOEε4 alleles: 1.0. Biomarker levels: Pittsburgh compound B: 2.24 SUVR (moderate elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The patient shows moderate whole brain atrophy (Z-score -1.76, 3.9th percentile) but normal ventricular volume. Despite this, cognitive performance (MMSE 28/30) remains intact, and APOE4 carrier status alone does not confirm pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (structural changes are present but not yet clinically significant)",
  "timestamp": "2025-07-26T16:20:38.837551"
}