{
  "ptid_time": "023_S_2068_2013-10-24",
  "img_path": "/data/qiuhui/data/adni/images/023_S_2068/2013-10-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 58,271 mm³, 23.9% above the reference mean. With a Z-score of 0.70 (75.7th percentile), this represents normal volume ; whole brain volume measures 995,775 mm³, 3.2% below the reference mean. With a Z-score of -0.43 (33.5th percentile), this represents normal volume . ",
  "text_data": "Age is 86.1 years. Gender is Male. Education: 20 years. MMSE: 26.0. MoCA: 20.0. Logical Memory: 12.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is slightly elevated (23.9% above mean) but still within normal range (Z-score 0.70). Whole brain volume is slightly reduced (3.2% below mean, Z-score -0.43), also normal for age. Cognitive scores show mild impairment (MoCA 20/30, MMSE 26/30), consistent with MCI, especially given APOE4 carrier status.  \n\n**Diagnosis:** **MCI (Mild Cognitive Impairment)**  \n**Confidence:** **Medium** (Cognitive scores suggest MCI, but brain atrophy is not severe enough to confirm dementia. Age and APOE4 support progression risk.)",
  "timestamp": "2025-07-26T02:59:40.719812"
}