{
  "ptid_time": "041_S_1002_2009-01-14",
  "img_path": "/data/qiuhui/data/adni/images/041_S_1002/2009-01-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 55,708 mm³, 98.5% above the reference mean. With a Z-score of 2.25 (98.8th percentile), this represents significant enlargement; whole brain volume measures 1,059,570 mm³, 8.7% above the reference mean. With a Z-score of 1.10 (86.4th percentile), this represents mild enlargement. ",
  "text_data": "Age is 78.3 years. Gender is Female. Education: 18 years. MMSE: 30.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. Biomarker levels: Pittsburgh compound B: 1.24 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is significantly enlarged (98.5% above reference mean, Z-score 2.25), which is often associated with neurodegeneration, but the whole brain volume is mildly enlarged (8.7% above reference mean, Z-score 1.10). The MMSE score of 30 is normal, and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (ventricular enlargement is concerning, but normal cognition and lack of APOE4 suggest no current impairment)",
  "timestamp": "2025-07-26T07:02:47.532639"
}