{
  "ptid_time": "037_S_4381_2013-01-25",
  "img_path": "/data/qiuhui/data/adni/images/037_S_4381/2013-01-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,458 mm³, 20.6% above the reference mean. With a Z-score of 0.59 (72.2th percentile), this represents normal volume ; hippocampal volume measures 7,840 mm³, 0.4% above the reference mean. With a Z-score of 0.06 (52.3th percentile), this represents normal volume ; whole brain volume measures 1,006,260 mm³, 3.3% below the reference mean. With a Z-score of -0.39 (34.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,682 mm³, 0.4% below the reference mean. With a Z-score of -0.03 (48.9th percentile), this represents normal volume ; fusiform gyrus volume measures 17,824 mm³, 3.3% below the reference mean. With a Z-score of -0.30 (38.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,316 mm³, 5.9% below the reference mean. With a Z-score of -0.49 (31.3th percentile), this represents normal volume . ",
  "text_data": "Age is 56.0 years. Gender is Female. Education: 17 years. MMSE: 29.0. MoCA: 25.0. Logical Memory: 13.0. Laboratory findings: Vitamin B12: 2431.00 (profound elevated); Eosinophils: 0.36 (significant elevated); Triglycerides (GPO): 268.00 (significant elevated); Cholesterol (High Performance): 268.00 (significant elevated). APOEε4 alleles: 1.0. ",
  "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. Cognitive screening scores (MMSE 29, MoCA 25) are within normal limits, though the MoCA is slightly lower than expected for age. APOE4 carrier status increases Alzheimer’s risk but does not confirm pathology in the absence of structural or cognitive deficits.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to slightly lower MoCA, but no significant structural or cognitive impairment)",
  "timestamp": "2025-07-26T06:45:40.519153"
}