{
  "ptid_time": "127_S_6357_2018-07-23",
  "img_path": "/data/qiuhui/data/adni/images/127_S_6357/2018-07-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,788 mm³, 15.9% below the reference mean. With a Z-score of -0.40 (34.5th percentile), this represents normal volume ; hippocampal volume measures 8,822 mm³, 14.8% above the reference mean. With a Z-score of 1.66 (95.2th percentile), this represents moderate enlargement; whole brain volume measures 1,131,720 mm³, 10.0% above the reference mean. With a Z-score of 1.24 (89.3th percentile), this represents mild enlargement; entorhinal cortex volume measures 6,273 mm³, 61.1% above the reference mean. With a Z-score of 4.74 (100.0th percentile), this represents profound enlargement; fusiform gyrus volume measures 22,325 mm³, 22.6% above the reference mean. With a Z-score of 2.54 (99.5th percentile), this represents significant enlargement; middle temporal gyrus volume measures 20,823 mm³, 1.5% above the reference mean. With a Z-score of 0.13 (55.2th percentile), this represents normal volume . ",
  "text_data": "Age is 67.7 years. Gender is Female. Education: 14 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 28.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.04 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows significant enlargement in key regions (hippocampus, entorhinal cortex, fusiform gyrus) rather than atrophy, which is atypical for Alzheimer's. Cognitive scores (MMSE 30, MoCA 28) are normal, and APOE4-negative status further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T13:31:53.207774"
}