{
  "ptid_time": "023_S_0031_2009-10-22",
  "img_path": "/data/qiuhui/data/adni/images/023_S_0031/2009-10-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 30,068 mm³, 18.7% below the reference mean. With a Z-score of -0.50 (30.7th percentile), this represents normal volume ; hippocampal volume measures 6,453 mm³, 0.6% below the reference mean. With a Z-score of -0.05 (47.9th percentile), this represents normal volume ; whole brain volume measures 879,218 mm³, 5.3% below the reference mean. With a Z-score of -0.63 (26.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,049 mm³, 11.9% below the reference mean. With a Z-score of -0.64 (25.9th percentile), this represents normal volume ; fusiform gyrus volume measures 14,035 mm³, 12.9% below the reference mean. With a Z-score of -0.97 (16.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,371 mm³, 7.4% above the reference mean. With a Z-score of 0.66 (74.6th percentile), this represents normal volume . ",
  "text_data": "Age is 81.7 years. Gender is Female. Education: 18 years. MMSE: 30.0. Logical Memory: 22.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 1179.00 pg/mL (normal ); Total tau: 307.30 pg/mL (normal ); Phosphorylated tau: 26.88 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Biomarkers (Aβ, T-tau, P-tau) are normal, and cognitive performance (MMSE: 30) is intact. No evidence of neurodegeneration or amyloid pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T02:27:06.391545"
}