{
  "ptid_time": "941_S_6333_2019-06-28",
  "img_path": "/data/qiuhui/data/adni/images/941_S_6333/2019-06-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 71,112 mm³, 84.6% above the reference mean. With a Z-score of 2.03 (97.9th percentile), this represents significant enlargement; whole brain volume measures 1,212,630 mm³, 12.3% above the reference mean. With a Z-score of 1.60 (94.5th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 78.9 years. Gender is Male. Education: 16 years. MMSE: 29.0. MoCA: 25.0. Logical Memory: 13.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is significantly enlarged (Z-score 2.03), which is often associated with brain atrophy and neurodegenerative processes, while whole brain volume is moderately enlarged (Z-score 1.60). Despite these structural changes, cognitive scores (MMSE 29, MoCA 25) remain within normal or near-normal ranges, suggesting preserved cognitive function. The presence of one APOE4 allele increases Alzheimer's risk but does not confirm pathology.  \n\n**Diagnosis:** Cognitively Normal (CN)  \n**Confidence:** Medium (due to conflicting structural and cognitive findings, with APOE4 adding uncertainty)",
  "timestamp": "2025-07-26T17:46:46.958215"
}