{
  "ptid_time": "114_S_4404_2013-01-21",
  "img_path": "/data/qiuhui/data/adni/images/114_S_4404/2013-01-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,222 mm³, 20.9% below the reference mean. With a Z-score of -0.57 (28.6th percentile), this represents normal volume ; hippocampal volume measures 7,114 mm³, 9.5% above the reference mean. With a Z-score of 0.76 (77.7th percentile), this represents normal volume ; whole brain volume measures 911,889 mm³, 1.8% below the reference mean. With a Z-score of -0.21 (41.7th percentile), this represents normal volume . ",
  "text_data": "Age is 83.5 years. Gender is Female. Education: 12 years. MMSE: 27.0. MoCA: 24.0. Logical Memory: 3.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements (ventricular, hippocampal, and whole brain) are all within normal ranges, with no significant atrophy. The MMSE score of 27 is within the normal range, and the MoCA score of 24 is borderline but not definitively impaired. The absence of APOE4 reduces genetic risk for Alzheimer’s.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to borderline MoCA score, but no structural or significant cognitive deficits)",
  "timestamp": "2025-07-26T11:46:53.383400"
}