{
  "ptid_time": "007_S_6255_2020-07-27",
  "img_path": "/data/qiuhui/data/adni/images/007_S_6255/2020-07-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,342 mm³, 18.8% above the reference mean. With a Z-score of 0.43 (66.6th percentile), this represents normal volume ; hippocampal volume measures 6,685 mm³, 6.0% below the reference mean. With a Z-score of -0.55 (29.0th percentile), this represents normal volume ; whole brain volume measures 954,730 mm³, 2.0% below the reference mean. With a Z-score of -0.26 (39.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,535 mm³, 3.8% below the reference mean. With a Z-score of -0.23 (40.9th percentile), this represents normal volume ; fusiform gyrus volume measures 16,699 mm³, 1.8% below the reference mean. With a Z-score of -0.17 (43.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,831 mm³, 8.7% above the reference mean. With a Z-score of 0.75 (77.4th percentile), this represents normal volume . ",
  "text_data": "Age is 77.3 years. Gender is Female. Education: 13 years. MMSE: 28.0. MoCA: 24.0. Logical Memory: 6.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampus, entorhinal cortex, fusiform gyrus, etc.) fall within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE 28, MoCA 24) are borderline for MCI but not strongly indicative of dementia. APOE4 carrier status increases Alzheimer’s risk but does not confirm pathology.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (due to borderline MoCA score and APOE4 status, but normal imaging)",
  "timestamp": "2025-07-25T22:08:30.222275"
}