{
  "ptid_time": "007_S_0293_2007-10-15",
  "img_path": "/data/qiuhui/data/adni/images/007_S_0293/2007-10-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 47,579 mm³, 1.2% above the reference mean. With a Z-score of 0.03 (51.4th percentile), this represents normal volume ; whole brain volume measures 1,126,400 mm³, 9.4% above the reference mean. With a Z-score of 1.24 (89.2th percentile), this represents mild enlargement. ",
  "text_data": "Age is 89.2 years. Gender is Male. Education: 12 years. MMSE: 24.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show normal ventricular volume and mild whole brain enlargement, which are not typical of significant atrophy seen in dementia. The MMSE score of 24 is borderline but not definitively indicative of dementia, especially given the patient's advanced age. APOE4 positivity increases Alzheimer's risk but is not diagnostic alone.  \n\nDiagnosis: **MCI (Mild Cognitive Impairment)**  \nConfidence: **Medium** (MMSE is borderline, imaging does not strongly support dementia, but age and APOE4 elevate concern for cognitive decline.)",
  "timestamp": "2025-07-25T21:48:45.831360"
}