{
  "ptid_time": "041_S_0446_2007-06-04",
  "img_path": "/data/qiuhui/data/adni/images/041_S_0446/2007-06-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,519 mm³, 41.5% below the reference mean. With a Z-score of -1.20 (11.4th percentile), this represents mild atrophy; whole brain volume measures 876,703 mm³, 14.8% below the reference mean. With a Z-score of -1.94 (2.6th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 89.8 years. Gender is Male. Education: 11 years. MMSE: 25.0. Logical Memory: 4.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The patient shows mild to moderate brain atrophy, particularly in whole brain volume (Z-score -1.94, 2.6th percentile), which is concerning for neurodegeneration. However, the MMSE score of 25 is within the normal range (24-30), and the absence of APOE4 reduces genetic risk, suggesting preserved cognitive function despite structural changes.  \n\nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to discordance between structural atrophy and intact cognition, though age-related changes may explain some atrophy)",
  "timestamp": "2025-07-26T06:58:34.289971"
}