{
  "ptid_time": "027_S_2183_2013-12-18",
  "img_path": "/data/qiuhui/data/adni/images/027_S_2183/2013-12-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 46,093 mm³, 2.0% below the reference mean. With a Z-score of -0.06 (47.7th percentile), this represents normal volume ; hippocampal volume measures 7,580 mm³, 8.8% above the reference mean. With a Z-score of 0.76 (77.6th percentile), this represents normal volume ; whole brain volume measures 1,017,800 mm³, 1.1% below the reference mean. With a Z-score of -0.14 (44.2th percentile), this represents normal volume . ",
  "text_data": "Age is 86.0 years. Gender is Male. Education: 18 years. MMSE: 27.0. MoCA: 18.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volumes (ventricular, hippocampal, and whole brain) are within normal ranges, with hippocampal volume even slightly above the reference mean. However, the MoCA score of 18 is significantly below the typical cutoff for normal cognition (usually ≥26), suggesting cognitive impairment, while the MMSE score of 27 is borderline (normal range is typically 24-30). The discrepancy between MoCA and MMSE, along with normal brain volumes, may indicate mild cognitive impairment (MCI) rather than dementia.  \n\n**Diagnosis:** MCI  \n**Confidence:** Medium (due to the conflicting MoCA and MMSE scores, but normal imaging suggests MCI over dementia)",
  "timestamp": "2025-07-26T03:52:30.149424"
}