{
  "ptid_time": "126_S_0605_2007-06-19",
  "img_path": "/data/qiuhui/data/adni/images/126_S_0605/2007-06-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,365 mm³, 29.6% above the reference mean. With a Z-score of 0.68 (75.1th percentile), this represents normal volume ; whole brain volume measures 1,181,950 mm³, 21.3% above the reference mean. With a Z-score of 2.68 (99.6th percentile), this represents significant enlargement. ",
  "text_data": "Age is 76.6 years. Gender is Female. Education: 16 years. MMSE: 30.0. Logical Memory: 16.0. APOEε4 alleles: 1.0. Biomarker levels: Amyloid beta: 1143.00 pg/mL (normal ); Total tau: 302.50 pg/mL (normal ); Phosphorylated tau: 25.23 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is within normal limits (Z-score 0.68), and whole brain volume is significantly above average (Z-score 2.68), suggesting no significant atrophy. Cognitive testing (MMSE 30/30) and CSF biomarkers (Aβ, T-tau, P-tau normal) are also unremarkable.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T12:36:05.047734"
}