{
  "ptid_time": "033_S_6497_2018-07-16",
  "img_path": "/data/qiuhui/data/adni/images/033_S_6497/2018-07-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,414 mm³, 5.4% below the reference mean. With a Z-score of -0.13 (44.9th percentile), this represents normal volume ; hippocampal volume measures 9,017 mm³, 12.3% above the reference mean. With a Z-score of 1.23 (89.1th percentile), this represents mild enlargement; whole brain volume measures 1,156,800 mm³, 2.0% above the reference mean. With a Z-score of 0.28 (60.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,511 mm³, 5.8% above the reference mean. With a Z-score of 0.40 (65.6th percentile), this represents normal volume ; fusiform gyrus volume measures 19,510 mm³, 2.0% below the reference mean. With a Z-score of -0.17 (43.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,615 mm³, 0.9% above the reference mean. With a Z-score of 0.07 (53.0th percentile), this represents normal volume . ",
  "text_data": "Age is 66.5 years. Gender is Male. Education: 20 years. Handedness: Left. Race: White. MMSE: 28.0. MoCA: 27.0. Logical Memory: 10.0. APOEε4 alleles: 1.0. Biomarker levels: Flobetaben (FBB): 1.28 SUVR (profound elevated). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements are largely within normal ranges, with hippocampal volume mildly enlarged (uncommon in Alzheimer's but not diagnostic). Cognitive scores (MMSE 28, MoCA 27) are intact, and there is no evidence of atrophy in Alzheimer's-sensitive regions (e.g., hippocampus, entorhinal cortex). APOE4 carrier status increases risk but does not confirm disease.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to APOE4 status, but imaging and cognitive scores strongly support normal aging)",
  "timestamp": "2025-07-26T05:40:39.053860"
}