{
  "ptid_time": "121_S_1350_2007-09-12",
  "img_path": "/data/qiuhui/data/adni/images/121_S_1350/2007-09-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 41,276 mm³, 47.1% above the reference mean. With a Z-score of 1.08 (85.9th percentile), this represents mild enlargement; whole brain volume measures 874,453 mm³, 10.3% below the reference mean. With a Z-score of -1.29 (9.8th percentile), this represents mild atrophy. ",
  "text_data": "Age is 72.1 years. Gender is Female. Education: 18 years. MMSE: 17.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The data shows mild ventricular enlargement and mild whole brain atrophy, which are structural changes often associated with neurodegenerative processes. The MMSE score of 17.0 is significantly below the normal range (typically 24-30), indicating substantial cognitive impairment, and the presence of one APOE4 allele increases the risk for Alzheimer's disease.  \n\nDiagnosis: Dementia  \nConfidence: High",
  "timestamp": "2025-07-26T12:20:52.640361"
}