{
  "ptid_time": "027_S_0118_2008-02-23",
  "img_path": "/data/qiuhui/data/adni/images/027_S_0118/2008-02-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,232 mm³, 10.2% below the reference mean. With a Z-score of -0.30 (38.4th percentile), this represents normal volume ; whole brain volume measures 918,931 mm³, 10.7% below the reference mean. With a Z-score of -1.40 (8.0th percentile), this represents mild atrophy. ",
  "text_data": "Age is 82.4 years. Gender is Male. Education: 20 years. MMSE: 29.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The patient shows mild whole brain atrophy (Z-score -1.40, 8th percentile) but normal ventricular volume. Despite being 82 years old, cognitive performance (MMSE 29/30) is intact, and there is no genetic risk (APOE4 negative).  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (mild atrophy could be age-related, but high MMSE supports normal cognition)",
  "timestamp": "2025-07-26T03:28:47.252273"
}