{
  "ptid_time": "016_S_4638_2013-02-01",
  "img_path": "/data/qiuhui/data/adni/images/016_S_4638/2013-02-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 44,199 mm³, 14.8% above the reference mean. With a Z-score of 0.35 (63.8th percentile), this represents normal volume ; hippocampal volume measures 7,698 mm³, 1.8% above the reference mean. With a Z-score of 0.18 (57.1th percentile), this represents normal volume ; whole brain volume measures 1,148,310 mm³, 6.4% above the reference mean. With a Z-score of 0.83 (79.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,950 mm³, 3.7% below the reference mean. With a Z-score of -0.25 (40.2th percentile), this represents normal volume ; fusiform gyrus volume measures 19,146 mm³, 1.6% above the reference mean. With a Z-score of 0.14 (55.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,628 mm³, 1.4% above the reference mean. With a Z-score of 0.12 (54.8th percentile), this represents normal volume . ",
  "text_data": "Age is 74.5 years. Gender is Male. Education: 17 years. MMSE: 29.0. MoCA: 22.0. Laboratory findings: . APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges based on Z-scores and percentiles. The MMSE score of 29 is normal, but the MoCA score of 22 suggests mild cognitive impairment (MCI). The absence of APOE4 reduces Alzheimer's risk.  \n\n**Diagnosis:** **MCI** (due to MoCA score discrepancy despite normal imaging and high MMSE)  \n**Confidence:** **Medium** (imaging is normal, but MoCA indicates possible cognitive decline)",
  "timestamp": "2025-07-26T00:28:40.862912"
}