{
  "ptid_time": "021_S_4659_2016-05-04",
  "img_path": "/data/qiuhui/data/adni/images/021_S_4659/2016-05-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 57,324 mm³, 21.9% above the reference mean. With a Z-score of 0.64 (73.8th percentile), this represents normal volume ; hippocampal volume measures 6,157 mm³, 11.6% below the reference mean. With a Z-score of -1.01 (15.7th percentile), this represents mild atrophy; whole brain volume measures 1,053,790 mm³, 2.4% above the reference mean. With a Z-score of 0.31 (62.3th percentile), this represents normal volume . ",
  "text_data": "Age is 89.9 years. Gender is Male. Education: 17 years. MMSE: 23.0. MoCA: 23.0. Logical Memory: 8.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The hippocampal volume shows mild atrophy (Z-score -1.01, 15.7th percentile), which is concerning for early neurodegenerative changes. The MMSE and MoCA scores (both 23.0) are borderline, suggesting possible cognitive impairment, but not severe enough for dementia. The presence of two APOE4 alleles increases Alzheimer's risk.  \nDiagnosis: **MCI (Mild Cognitive Impairment)**  \nConfidence: **Medium** (due to borderline cognitive scores and hippocampal atrophy, but not severe enough for dementia diagnosis)",
  "timestamp": "2025-07-26T01:50:06.200138"
}