{
  "ptid_time": "073_S_2153_2011-06-17",
  "img_path": "/data/qiuhui/data/adni/images/073_S_2153/2011-06-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,941 mm³, 14.5% below the reference mean. With a Z-score of -0.35 (36.4th percentile), this represents normal volume ; hippocampal volume measures 8,631 mm³, 14.2% above the reference mean. With a Z-score of 1.38 (91.7th percentile), this represents mild enlargement; whole brain volume measures 950,128 mm³, 12.0% below the reference mean. With a Z-score of -1.55 (6.0th percentile), this represents moderate atrophy; entorhinal cortex volume measures 3,513 mm³, 14.3% below the reference mean. With a Z-score of -0.97 (16.6th percentile), this represents normal volume ; fusiform gyrus volume measures 18,142 mm³, 3.7% below the reference mean. With a Z-score of -0.31 (37.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,731 mm³, 7.5% below the reference mean. With a Z-score of -0.68 (24.9th percentile), this represents normal volume . ",
  "text_data": "Age is 77.1 years. Gender is Male. Education: 14 years. MMSE: 30.0. MoCA: 26.0. Laboratory findings: Vitamin B12: 911.00 (significant elevated); Serum Glucose: 131.00 (significant elevated); Triglycerides (GPO): 305.00 (profound elevated). APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The patient shows moderate whole brain atrophy (Z-score -1.55, 6th percentile) but normal hippocampal volume (Z-score +1.38, 91.7th percentile) and normal volumes in other key regions (entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 30, MoCA 26) are within normal limits for age, and APOE4-negative status reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to discordance between whole brain atrophy and preserved hippocampal volume, but cognitive performance supports CN)",
  "timestamp": "2025-07-26T09:36:15.788276"
}