{
  "ptid_time": "126_S_6559_2018-08-20",
  "img_path": "/data/qiuhui/data/adni/images/126_S_6559/2018-08-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 93,786 mm³, 319.9% above the reference mean. With a Z-score of 8.00 (100.0th percentile), this represents profound enlargement; whole brain volume measures 810,789 mm³, 21.2% below the reference mean. With a Z-score of -2.64 (0.4th percentile), this represents significant atrophy. ",
  "text_data": "Age is 66.2 years. Gender is Female. Education: 16 years. Handedness: Left. Race: White. MMSE: 30.0. MoCA: 25.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.03 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows profound ventricular enlargement (Z-score 8.00) and significant whole-brain atrophy (Z-score -2.64), which are strongly suggestive of neurodegenerative pathology. However, cognitive scores (MMSE 30, MoCA 25) are largely intact, with only mild impairment on the MoCA, suggesting possible early cognitive changes.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (High structural evidence of neurodegeneration, but cognitive scores are borderline normal/MCI, and APOE4-negative status reduces certainty of rapid progression.)",
  "timestamp": "2025-07-26T12:53:47.575681"
}