{
  "ptid_time": "014_S_6437_2018-08-21",
  "img_path": "/data/qiuhui/data/adni/images/014_S_6437/2018-08-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,318 mm³, 34.3% below the reference mean. With a Z-score of -0.82 (20.6th percentile), this represents normal volume ; hippocampal volume measures 7,636 mm³, 1.0% above the reference mean. With a Z-score of 0.10 (54.0th percentile), this represents normal volume ; whole brain volume measures 1,025,390 mm³, 5.0% below the reference mean. With a Z-score of -0.65 (25.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,456 mm³, 8.7% above the reference mean. With a Z-score of 0.59 (72.2th percentile), this represents normal volume ; fusiform gyrus volume measures 20,256 mm³, 7.5% above the reference mean. With a Z-score of 0.64 (73.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,653 mm³, 1.5% above the reference mean. With a Z-score of 0.13 (55.3th percentile), this represents normal volume . ",
  "text_data": "Age is 76.3 years. Gender is Male. Education: 16 years. MMSE: 29.0. MoCA: 24.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.12 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 29 is within the normal range, while the MoCA score of 24 is slightly below the typical cutoff of 26, which may suggest mild cognitive concerns but not dementia. The absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to the borderline MoCA score, but otherwise normal findings)",
  "timestamp": "2025-07-25T23:59:40.766873"
}