{
  "ptid_time": "014_S_0520_2009-08-17",
  "img_path": "/data/qiuhui/data/adni/images/014_S_0520/2009-08-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,965 mm³, 40.6% below the reference mean. With a Z-score of -1.10 (13.7th percentile), this represents mild atrophy; whole brain volume measures 1,099,060 mm³, 18.4% above the reference mean. With a Z-score of 2.21 (98.6th percentile), this represents significant enlargement. ",
  "text_data": "Age is 80.7 years. Gender is Female. Education: 16 years. MMSE: 30.0. Logical Memory: 17.0. APOEε4 alleles: 2.0. Biomarker levels: Amyloid beta: 547.80 pg/mL (mild reduced); Total tau: 242.80 pg/mL (normal ); Phosphorylated tau: 20.61 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The patient has a high MMSE score (30/30), normal tau levels, and only mildly reduced Aβ, suggesting no significant cognitive impairment. The brain volume data shows mild ventricular atrophy but overall enlarged whole brain volume, which is atypical for Alzheimer's but not indicative of neurodegeneration.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to the atypical brain volume findings despite normal biomarkers and cognition)",
  "timestamp": "2025-07-25T23:41:49.709315"
}