{
  "ptid_time": "127_S_4148_2012-02-16",
  "img_path": "/data/qiuhui/data/adni/images/127_S_4148/2012-02-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 14,428 mm³, 62.5% below the reference mean. With a Z-score of -1.50 (6.7th percentile), this represents mild atrophy; hippocampal volume measures 8,807 mm³, 16.5% above the reference mean. With a Z-score of 1.61 (94.6th percentile), this represents moderate enlargement; whole brain volume measures 1,114,980 mm³, 3.3% above the reference mean. With a Z-score of 0.43 (66.6th percentile), this represents normal volume . ",
  "text_data": "Age is 73.5 years. Gender is Male. Education: 18 years. MMSE: 30.0. MoCA: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume shows mild atrophy (Z-score -1.50), but hippocampal and whole brain volumes are normal or even enlarged. Cognitive scores (MMSE 30, MoCA 30) are intact, and there is no APOE4 risk allele.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (mild ventricular atrophy could be age-related, but cognitive performance is strong)",
  "timestamp": "2025-07-26T13:13:17.287633"
}