{
  "ptid_time": "141_S_1137_2007-06-26",
  "img_path": "/data/qiuhui/data/adni/images/141_S_1137/2007-06-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 65,230 mm³, 76.5% above the reference mean. With a Z-score of 2.06 (98.0th percentile), this represents significant enlargement; whole brain volume measures 781,871 mm³, 15.8% below the reference mean. With a Z-score of -1.89 (2.9th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 82.0 years. Gender is Female. Education: 18 years. MMSE: 20.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The data shows significant ventricular enlargement (Z-score 2.06) and moderate whole brain atrophy (Z-score -1.89), consistent with structural changes seen in dementia. The MMSE score of 20 (below the typical cutoff of 24 for cognitive impairment) in an 82-year-old further supports cognitive decline.  \nDiagnosis: Dementia  \nConfidence: High",
  "timestamp": "2025-07-26T16:56:05.605097"
}