{
  "ptid_time": "041_S_0898_2009-11-03",
  "img_path": "/data/qiuhui/data/adni/images/041_S_0898/2009-11-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 39,957 mm³, 8.1% above the reference mean. With a Z-score of 0.22 (58.6th percentile), this represents normal volume ; whole brain volume measures 951,528 mm³, 2.5% above the reference mean. With a Z-score of 0.30 (61.9th percentile), this represents normal volume . ",
  "text_data": "Age is 86.1 years. Gender is Female. Education: 12 years. MMSE: 28.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. Biomarker levels: Pittsburgh compound B: 1.21 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The ventricular and whole brain volumes are within normal ranges, and the MMSE score of 28 is well above the typical cutoff for cognitive impairment (usually <24). The absence of APOE4 alleles further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T07:02:14.431022"
}