{
  "ptid_time": "137_S_0800_2009-08-31",
  "img_path": "/data/qiuhui/data/adni/images/137_S_0800/2009-08-31/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,811 mm³, 9.6% below the reference mean. With a Z-score of -0.23 (40.9th percentile), this represents normal volume ; whole brain volume measures 955,559 mm³, 11.5% below the reference mean. With a Z-score of -1.49 (6.8th percentile), this represents mild atrophy. ",
  "text_data": "Age is 77.0 years. Gender is Male. Education: 12 years. MMSE: 29.0. Logical Memory: 5.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The patient shows mild whole brain atrophy (Z-score -1.49, 6.8th percentile) but normal ventricular volume. Despite this, cognitive performance (MMSE 29/30) is intact, and APOE4 homozygosity increases Alzheimer's risk but doesn't confirm pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (structural changes without cognitive impairment suggest preclinical stage, but APOE4 status warrants caution)",
  "timestamp": "2025-07-26T16:18:19.791548"
}