{
  "ptid_time": "023_S_0926_2009-10-30",
  "img_path": "/data/qiuhui/data/adni/images/023_S_0926/2009-10-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,398 mm³, 15.4% above the reference mean. With a Z-score of 0.35 (63.8th percentile), this represents normal volume ; whole brain volume measures 986,427 mm³, 1.2% above the reference mean. With a Z-score of 0.15 (56.0th percentile), this represents normal volume . ",
  "text_data": "Age is 74.4 years. Gender is Female. Education: 16 years. MMSE: 30.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular and whole brain volumes are within normal ranges, and the MMSE score of 30 indicates no cognitive impairment. The absence of APOE4 alleles further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T02:50:19.287829"
}