{
  "ptid_time": "127_S_0925_2007-05-21",
  "img_path": "/data/qiuhui/data/adni/images/127_S_0925/2007-05-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 70,707 mm³, 83.6% above the reference mean. With a Z-score of 2.00 (97.7th percentile), this represents significant enlargement; whole brain volume measures 1,027,520 mm³, 4.8% below the reference mean. With a Z-score of -0.62 (26.6th percentile), this represents normal volume . ",
  "text_data": "Age is 74.9 years. Gender is Male. Education: 12 years. MMSE: 27.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The significant ventricular enlargement (Z-score 2.00) suggests possible atrophy, but whole brain volume is within normal limits (Z-score -0.62). The MMSE score of 27 is normal, and the absence of APOE4 reduces genetic risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular enlargement raises concern, but other markers are normal)",
  "timestamp": "2025-07-26T13:03:57.691650"
}