{
  "ptid_time": "021_S_4744_2014-06-10",
  "img_path": "/data/qiuhui/data/adni/images/021_S_4744/2014-06-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 13,425 mm³, 52.2% below the reference mean. With a Z-score of -1.19 (11.6th percentile), this represents mild atrophy; hippocampal volume measures 6,954 mm³, 2.3% below the reference mean. With a Z-score of -0.21 (41.8th percentile), this represents normal volume ; whole brain volume measures 882,466 mm³, 9.5% below the reference mean. With a Z-score of -1.19 (11.7th percentile), this represents mild atrophy. ",
  "text_data": "Age is 74.3 years. Gender is Female. Education: 12 years. MMSE: 26.0. MoCA: 23.0. Logical Memory: 9.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows mild atrophy in ventricular and whole brain volumes but normal hippocampal volume. Cognitive testing (MMSE 26, MoCA 23) suggests mild cognitive impairment, and the presence of two APOE4 alleles increases Alzheimer's risk.  \n\n**Diagnosis:** **MCI** (Mild Cognitive Impairment)  \n**Confidence:** **Medium** (Cognitive scores align with MCI, but hippocampal volume is preserved, which is atypical for early Alzheimer's.)",
  "timestamp": "2025-07-26T01:51:36.982046"
}