{
  "ptid_time": "057_S_0643_2007-07-18",
  "img_path": "/data/qiuhui/data/adni/images/057_S_0643/2007-07-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,371 mm³, 31.0% below the reference mean. With a Z-score of -0.71 (23.9th percentile), this represents normal volume ; whole brain volume measures 1,081,390 mm³, 11.0% above the reference mean. With a Z-score of 1.38 (91.6th percentile), this represents mild enlargement. ",
  "text_data": "Age is 72.4 years. Gender is Female. Education: 15 years. MMSE: 30.0. Logical Memory: 17.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is within normal limits, and the whole brain volume is mildly enlarged, which does not suggest atrophy typical of Alzheimer's. The MMSE score of 30 is perfect, and while APOE4 homozygosity (2 alleles) is a strong genetic risk factor, there are no current cognitive or structural deficits.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to the presence of APOE4 risk but no clinical or imaging abnormalities)",
  "timestamp": "2025-07-26T08:04:01.881729"
}