{
  "ptid_time": "127_S_4148_2013-08-15",
  "img_path": "/data/qiuhui/data/adni/images/127_S_4148/2013-08-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 14,622 mm³, 62.0% below the reference mean. With a Z-score of -1.49 (6.9th percentile), this represents mild atrophy; hippocampal volume measures 8,772 mm³, 16.0% above the reference mean. With a Z-score of 1.57 (94.1th percentile), this represents moderate enlargement; whole brain volume measures 1,114,540 mm³, 3.3% above the reference mean. With a Z-score of 0.42 (66.4th percentile), this represents normal volume . ",
  "text_data": "Age is 75.0 years. Gender is Male. Education: 18 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.04 SUVR (normal ); Amyloid beta: 1272.00 pg/mL (normal ); Total tau: 181.50 pg/mL (normal ); Phosphorylated tau: 14.99 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild ventricular atrophy but otherwise normal-to-above-average hippocampal and whole brain volumes. Cognitive testing (MMSE 30, MoCA 29) is intact, and biomarkers (Aβ, tau, AV45) are normal, with no APOE4 risk allele.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T13:13:33.219304"
}