{
  "ptid_time": "941_S_4376_2012-07-17",
  "img_path": "/data/qiuhui/data/adni/images/941_S_4376/2012-07-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,603 mm³, 12.6% above the reference mean. With a Z-score of 0.29 (61.3th percentile), this represents normal volume ; hippocampal volume measures 6,897 mm³, 3.1% below the reference mean. With a Z-score of -0.28 (39.0th percentile), this represents normal volume ; whole brain volume measures 962,661 mm³, 1.2% below the reference mean. With a Z-score of -0.15 (43.8th percentile), this represents normal volume . ",
  "text_data": "Age is 77.0 years. Gender is Female. Education: 16 years. MMSE: 27.0. MoCA: 23.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volumes (ventricular, hippocampal, and whole brain) are within normal ranges, with only minor deviations from the reference mean. The MMSE score of 27 is normal, but the MoCA score of 23 suggests mild cognitive impairment (MCI). The absence of APOE4 reduces genetic risk for Alzheimer's.  \n\n**Diagnosis:** **MCI** (due to MoCA score indicating mild cognitive deficits despite normal brain volumes and MMSE).  \n\n**Confidence:** **Medium** (MoCA suggests MCI, but structural imaging does not show significant atrophy typical of dementia).",
  "timestamp": "2025-07-26T17:39:08.026460"
}