{
  "ptid_time": "002_S_0782_2007-04-11",
  "img_path": "/data/qiuhui/data/adni/images/002_S_0782/2007-04-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 86,459 mm³, 83.9% above the reference mean. With a Z-score of 2.44 (99.3th percentile), this represents significant enlargement; whole brain volume measures 1,014,820 mm³, 1.4% below the reference mean. With a Z-score of -0.18 (42.8th percentile), this represents normal volume . ",
  "text_data": "Age is 82.1 years. Gender is Male. Education: 16 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is significantly enlarged (Z-score 2.44), which is often associated with brain atrophy, but the whole brain volume is within normal limits (Z-score -0.18). The MMSE score of 30 is intact, and there is no APOE4 genetic risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular enlargement raises concern, but normal cognition and brain volume suggest no current impairment)",
  "timestamp": "2025-07-25T20:06:08.170415"
}