{
  "ptid_time": "031_S_4194_2012-02-28",
  "img_path": "/data/qiuhui/data/adni/images/031_S_4194/2012-02-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 12,335 mm³, 58.9% below the reference mean. With a Z-score of -1.40 (8.1th percentile), this represents mild atrophy; hippocampal volume measures 8,834 mm³, 10.1% above the reference mean. With a Z-score of 1.00 (84.2th percentile), this represents mild enlargement; whole brain volume measures 1,096,060 mm³, 3.4% below the reference mean. With a Z-score of -0.48 (31.6th percentile), this represents normal volume . ",
  "text_data": "Age is 62.5 years. Gender is Male. Education: 16 years. MMSE: 30.0. MoCA: 27.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The ventricular volume shows mild atrophy, but hippocampal volume is mildly enlarged, and whole brain volume is normal. Cognitive scores (MMSE 30, MoCA 27) are within normal ranges, and there is no APOE4 genetic risk factor.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (mild ventricular atrophy could warrant monitoring, but cognitive performance and other metrics suggest no impairment)",
  "timestamp": "2025-07-26T04:47:29.796684"
}