{
  "ptid_time": "011_S_0241_2006-09-27",
  "img_path": "/data/qiuhui/data/adni/images/011_S_0241/2006-09-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 57,176 mm³, 21.6% above the reference mean. With a Z-score of 0.63 (73.5th percentile), this represents normal volume ; whole brain volume measures 847,339 mm³, 17.7% below the reference mean. With a Z-score of -2.31 (1.0th percentile), this represents significant atrophy. ",
  "text_data": "Age is 82.3 years. Gender is Male. Education: 16 years. MMSE: 25.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The data shows significant whole brain atrophy (Z-score -2.31, 1st percentile) with normal ventricular volume, which is concerning for neurodegeneration. The MMSE score of 25 is borderline, but combined with the atrophy, suggests cognitive impairment. The absence of APOE4 reduces Alzheimer's risk but doesn't rule it out.  \n\nDiagnosis: **MCI** (mild cognitive impairment)  \nConfidence: **Medium** (due to borderline MMSE and lack of detailed clinical history)",
  "timestamp": "2025-07-25T22:44:15.428922"
}