{
  "ptid_time": "116_S_4043_2020-02-26",
  "img_path": "/data/qiuhui/data/adni/images/116_S_4043/2020-02-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 49,833 mm³, 1.9% above the reference mean. With a Z-score of 0.18 (57.0th percentile), this represents normal volume ; hippocampal volume measures 7,339 mm³, 15.2% above the reference mean. With a Z-score of 1.66 (95.2th percentile), this represents moderate enlargement; whole brain volume measures 1,007,430 mm³, 0.6% above the reference mean. With a Z-score of 0.10 (53.9th percentile), this represents normal volume ; entorhinal cortex volume measures 5,134 mm³, 29.8% above the reference mean. With a Z-score of 1.53 (93.7th percentile), this represents moderate enlargement; fusiform gyrus volume measures 17,899 mm³, 6.2% above the reference mean. With a Z-score of 0.72 (76.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,030 mm³, 0.9% above the reference mean. With a Z-score of 0.14 (55.8th percentile), this represents normal volume . ",
  "text_data": "Age is 90.6 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 23.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.94 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows normal or above-average volumes in all measured regions, including the hippocampus and entorhinal cortex, which are typically affected in Alzheimer's disease. The MMSE score of 30 is normal, but the MoCA score of 23 suggests mild cognitive impairment (MCI). However, the absence of APOE4 and only mild amyloid burden (AV45) reduces the likelihood of Alzheimer's pathology.  \n**Diagnosis:** MCI  \n**Confidence:** Medium",
  "timestamp": "2025-07-26T12:06:53.586159"
}