{
  "ptid_time": "941_S_1203_2010-03-27",
  "img_path": "/data/qiuhui/data/adni/images/941_S_1203/2010-03-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 38,738 mm³, 17.6% below the reference mean. With a Z-score of -0.51 (30.5th percentile), this represents normal volume ; whole brain volume measures 868,649 mm³, 15.6% below the reference mean. With a Z-score of -2.04 (2.0th percentile), this represents significant atrophy. ",
  "text_data": "Age is 86.3 years. Gender is Male. Education: 15 years. MMSE: 29.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 1640.00 pg/mL (moderate elevated); Total tau: 205.30 pg/mL (normal ); Phosphorylated tau: 15.86 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The patient shows significant whole brain atrophy (Z-score -2.04, 2nd percentile) but normal ventricular volume. Despite the atrophy, cognitive function is intact (MMSE 29), and biomarkers show only moderately elevated Aβ with normal tau levels, suggesting early pathological changes without significant clinical impairment.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to discordance between structural atrophy and preserved cognition, though biomarkers support early AD changes without dementia or",
  "timestamp": "2025-07-26T17:30:18.806415"
}