{
  "ptid_time": "023_S_0078_2007-01-11",
  "img_path": "/data/qiuhui/data/adni/images/023_S_0078/2007-01-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 49,141 mm³, 75.1% above the reference mean. With a Z-score of 1.72 (95.7th percentile), this represents moderate enlargement; whole brain volume measures 1,013,450 mm³, 4.0% above the reference mean. With a Z-score of 0.50 (69.2th percentile), this represents normal volume . ",
  "text_data": "Age is 77.0 years. Gender is Female. Education: 18 years. MMSE: 13.0. Logical Memory: 0.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is moderately enlarged (75.1% above reference mean, Z-score 1.72), suggesting significant atrophy, while whole brain volume is normal. The MMSE score of 13 indicates severe cognitive impairment, consistent with dementia. The presence of one APOE4 allele further supports Alzheimer's risk.  \n\n**Diagnosis:** Dementia (likely Alzheimer’s disease)  \n**Confidence:** High",
  "timestamp": "2025-07-26T02:33:36.197431"
}