{
  "ptid_time": "131_S_0123_2009-02-05",
  "img_path": "/data/qiuhui/data/adni/images/131_S_0123/2009-02-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,827 mm³, 12.2% below the reference mean. With a Z-score of -0.29 (38.5th percentile), this represents normal volume ; whole brain volume measures 895,994 mm³, 17.0% below the reference mean. With a Z-score of -2.21 (1.4th percentile), this represents significant atrophy. ",
  "text_data": "Age is 76.3 years. Gender is Male. Education: 20 years. MMSE: 29.0. Logical Memory: 24.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The whole brain volume shows significant atrophy (Z-score -2.21, 1.4th percentile), which is concerning for neurodegenerative disease. However, the MMSE score of 29 is within the normal range, and there is no APOE4 risk allele, suggesting preserved cognitive function despite structural changes.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium",
  "timestamp": "2025-07-26T14:59:24.243338"
}