{
  "ptid_time": "013_S_1205_2007-07-24",
  "img_path": "/data/qiuhui/data/adni/images/013_S_1205/2007-07-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,989 mm³, 53.2% below the reference mean. With a Z-score of -1.55 (6.1th percentile), this represents moderate atrophy; whole brain volume measures 885,372 mm³, 14.0% below the reference mean. With a Z-score of -1.83 (3.4th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 83.5 years. Gender is Male. Education: 19 years. MMSE: 24.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The data shows moderate atrophy in both ventricular and whole brain volumes, with Z-scores indicating below-average volumes for age. The MMSE score of 24 is borderline, suggesting possible cognitive impairment, but the absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to borderline MMSE and moderate atrophy, but lack of clear dementia-level deficits or APOE4 risk)",
  "timestamp": "2025-07-25T23:27:01.925391"
}