{
  "ptid_time": "013_S_6206_2018-06-13",
  "img_path": "/data/qiuhui/data/adni/images/013_S_6206/2018-06-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,117 mm³, 29.6% below the reference mean. With a Z-score of -0.86 (19.5th percentile), this represents normal volume ; hippocampal volume measures 6,230 mm³, 10.6% below the reference mean. With a Z-score of -0.92 (18.0th percentile), this represents normal volume ; whole brain volume measures 965,876 mm³, 6.1% below the reference mean. With a Z-score of -0.81 (21.0th percentile), this represents normal volume ; entorhinal cortex volume measures 4,125 mm³, 3.9% above the reference mean. With a Z-score of 0.26 (60.2th percentile), this represents normal volume ; fusiform gyrus volume measures 17,880 mm³, 1.0% below the reference mean. With a Z-score of -0.09 (46.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,654 mm³, 2.6% below the reference mean. With a Z-score of -0.23 (40.9th percentile), this represents normal volume . ",
  "text_data": "Age is 81.9 years. Gender is Male. Education: 16 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 25.0. Logical Memory: 9.0. APOEε4 alleles: 1.0. Biomarker levels: Flobetaben (FBB): 1.54 SUVR (profound elevated). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 30 is normal, while the MoCA score of 25 suggests mild cognitive impairment (MCI), but not dementia. APOE4 carrier status increases Alzheimer's risk but does not confirm pathology.  \n\n**Diagnosis:** **MCI** (due to borderline MoCA score despite normal imaging and MMSE)  \n**Confidence:** **Medium** (imaging is normal, but MoCA indicates possible early cognitive decline; clinical correlation needed).",
  "timestamp": "2025-07-25T23:37:47.536246"
}