{
  "ptid_time": "100_S_0047_2006-12-08",
  "img_path": "/data/qiuhui/data/adni/images/100_S_0047/2006-12-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 64,775 mm³, 37.8% above the reference mean. With a Z-score of 1.10 (86.4th percentile), this represents mild enlargement; hippocampal volume measures 6,898 mm³, 1.0% below the reference mean. With a Z-score of -0.09 (46.5th percentile), this represents normal volume ; whole brain volume measures 1,066,660 mm³, 3.6% above the reference mean. With a Z-score of 0.48 (68.3th percentile), this represents normal volume ; entorhinal cortex volume measures 4,405 mm³, 11.0% above the reference mean. With a Z-score of 0.72 (76.4th percentile), this represents normal volume ; fusiform gyrus volume measures 17,150 mm³, 5.1% below the reference mean. With a Z-score of -0.44 (33.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,276 mm³, 5.5% above the reference mean. With a Z-score of 0.49 (68.8th percentile), this represents normal volume . ",
  "text_data": "Age is 85.7 years. Gender is Male. Education: 20 years. MMSE: 30.0. Logical Memory: 20.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 1257.00 pg/mL (normal ); Total tau: 233.80 pg/mL (normal ); Phosphorylated tau: 21.40 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume shows mild enlargement (37.8% above reference mean), but hippocampal and other key brain volumes are within normal ranges. Cognitive testing (MMSE 30/30) and biomarker data (normal Aβ, T-tau, P-tau) also suggest no significant impairment.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T11:15:42.627678"
}