{
  "ptid_time": "041_S_0598_2007-09-12",
  "img_path": "/data/qiuhui/data/adni/images/041_S_0598/2007-09-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 85,277 mm³, 121.4% above the reference mean. With a Z-score of 2.91 (99.8th percentile), this represents significant enlargement; whole brain volume measures 1,188,200 mm³, 10.1% above the reference mean. With a Z-score of 1.31 (90.5th percentile), this represents mild enlargement. ",
  "text_data": "Age is 73.3 years. Gender is Male. Education: 20 years. MMSE: 28.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. Biomarker levels: Pittsburgh compound B: 1.42 SUVR (normal ); Amyloid beta: 1039.00 pg/mL (normal ); Total tau: 173.10 pg/mL (normal ); Phosphorylated tau: 14.77 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is significantly enlarged (Z-score 2.91), which is often associated with neurodegeneration, but whole brain volume is mildly enlarged (Z-score 1.31), suggesting no significant atrophy. Cognitive testing (MMSE 28/30) is normal, and biomarkers (Aβ, T-tau, P-tau) are within normal ranges, with no APOE4 risk allele.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (Ventricular enlargement is concerning, but normal cognition and biomarkers suggest no active neurodegenerative disease at this time.)",
  "timestamp": "2025-07-26T06:59:41.534565"
}