{
  "ptid_time": "027_S_0074_2009-01-13",
  "img_path": "/data/qiuhui/data/adni/images/027_S_0074/2009-01-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 91,291 mm³, 94.2% above the reference mean. With a Z-score of 2.74 (99.7th percentile), this represents significant enlargement; whole brain volume measures 1,026,540 mm³, 0.3% below the reference mean. With a Z-score of -0.03 (48.7th percentile), this represents normal volume . ",
  "text_data": "Age is 81.2 years. Gender is Male. Education: 20 years. MMSE: 30.0. Logical Memory: 20.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The significant ventricular enlargement (Z-score 2.74) suggests possible atrophy, but the whole brain volume is normal (Z-score -0.03). The MMSE score of 30 is intact, and there is no APOE4 risk allele.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular enlargement raises some concern, but other markers are normal)",
  "timestamp": "2025-07-26T03:25:54.181046"
}