{
  "ptid_time": "002_S_0782_2008-06-18",
  "img_path": "/data/qiuhui/data/adni/images/002_S_0782/2008-06-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 91,490 mm³, 94.6% above the reference mean. With a Z-score of 2.75 (99.7th percentile), this represents significant enlargement; whole brain volume measures 1,012,040 mm³, 1.7% below the reference mean. With a Z-score of -0.22 (41.4th percentile), this represents normal volume . ",
  "text_data": "Age is 83.1 years. Gender is Male. Education: 16 years. MMSE: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is significantly enlarged (Z-score 2.75), which is often associated with neurodegeneration, but the whole brain volume is within normal limits (Z-score -0.22). The MMSE score of 29 is normal, and the absence of APOE4 reduces genetic risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular enlargement is concerning, but other markers are normal)",
  "timestamp": "2025-07-25T20:06:16.287402"
}