{
  "ptid_time": "037_S_1421_2009-05-13",
  "img_path": "/data/qiuhui/data/adni/images/037_S_1421/2009-05-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,860 mm³, 6.4% above the reference mean. With a Z-score of 0.15 (55.8th percentile), this represents normal volume ; whole brain volume measures 862,480 mm³, 11.5% below the reference mean. With a Z-score of -1.45 (7.4th percentile), this represents mild atrophy. ",
  "text_data": "Age is 75.9 years. Gender is Female. Education: 12 years. MMSE: 27.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The patient shows mild whole brain atrophy (Z-score -1.45, 7.4th percentile) but normal ventricular volume. The MMSE score of 27 is within the normal range (≥26), and the presence of one APOE4 allele increases Alzheimer's risk but does not confirm impairment.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (mild atrophy is concerning, but cognitive performance remains intact)",
  "timestamp": "2025-07-26T06:37:45.742051"
}