{
  "ptid_time": "073_S_4155_2012-02-06",
  "img_path": "/data/qiuhui/data/adni/images/073_S_4155/2012-02-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,509 mm³, 26.9% below the reference mean. With a Z-score of -0.62 (26.9th percentile), this represents normal volume ; hippocampal volume measures 7,632 mm³, 7.3% above the reference mean. With a Z-score of 0.67 (74.8th percentile), this represents normal volume ; whole brain volume measures 945,110 mm³, 3.0% below the reference mean. With a Z-score of -0.38 (35.1th percentile), this represents normal volume . ",
  "text_data": "Age is 78.1 years. Gender is Female. Education: 14 years. MMSE: 30.0. MoCA: 21.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volumes (ventricular, hippocampal, and whole brain) are all within normal ranges, with no significant atrophy. The MMSE score of 30 is normal, but the MoCA score of 21 suggests mild cognitive impairment (MCI). The presence of one APOE4 allele increases Alzheimer's risk but does not confirm dementia.  \n\n**Diagnosis:** **MCI** (due to MoCA score indicating cognitive decline despite normal brain volumes and MMSE)  \n**Confidence:** **Medium** (MoCA suggests impairment, but structural imaging does not show neurodegeneration typical of dementia)",
  "timestamp": "2025-07-26T09:40:37.097122"
}