{
  "ptid_time": "133_S_1031_2007-11-20",
  "img_path": "/data/qiuhui/data/adni/images/133_S_1031/2007-11-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 52,100 mm³, 85.6% above the reference mean. With a Z-score of 1.96 (97.5th percentile), this represents moderate enlargement; whole brain volume measures 883,878 mm³, 9.3% below the reference mean. With a Z-score of -1.17 (12.1th percentile), this represents mild atrophy. ",
  "text_data": "Age is 78.1 years. Gender is Female. Education: 18 years. MMSE: 29.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is significantly enlarged (85.6% above mean, Z-score 1.96), and whole brain volume shows mild atrophy (9.3% below mean, Z-score -1.17), suggesting structural brain changes. However, the MMSE score of 29 is within the normal range, and the absence of APOE4 reduces genetic risk for Alzheimer's.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (structural changes are present, but cognitive performance remains intact)",
  "timestamp": "2025-07-26T15:29:23.851413"
}