{
  "ptid_time": "021_S_4245_2013-10-09",
  "img_path": "/data/qiuhui/data/adni/images/021_S_4245/2013-10-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 83,685 mm³, 117.3% above the reference mean. With a Z-score of 2.81 (99.8th percentile), this represents significant enlargement; hippocampal volume measures 5,724 mm³, 24.3% below the reference mean. With a Z-score of -2.37 (0.9th percentile), this represents significant atrophy; whole brain volume measures 972,339 mm³, 9.9% below the reference mean. With a Z-score of -1.29 (9.9th percentile), this represents mild atrophy. ",
  "text_data": "Age is 75.6 years. Gender is Male. Education: 19 years. MMSE: 25.0. MoCA: 22.0. Logical Memory: 6.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant ventricular enlargement (Z-score 2.81) and hippocampal atrophy (Z-score -2.37), both strongly associated with Alzheimer's pathology. The MMSE (25) and MoCA (22) scores indicate mild cognitive impairment, while the presence of one APOE4 allele increases Alzheimer's risk.  \n\n**Diagnosis:** **MCI (likely due to Alzheimer’s disease)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T01:41:52.305987"
}