{
  "ptid_time": "005_S_1224_2007-08-15",
  "img_path": "/data/qiuhui/data/adni/images/005_S_1224/2007-08-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 88,886 mm³, 89.1% above the reference mean. With a Z-score of 2.59 (99.5th percentile), this represents significant enlargement; whole brain volume measures 1,060,410 mm³, 3.0% above the reference mean. With a Z-score of 0.40 (65.5th percentile), this represents normal volume . ",
  "text_data": "Age is 81.6 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 2.59, 99.5th percentile), which is often associated with brain atrophy and neurodegenerative processes. However, the whole brain volume is normal (Z-score 0.40), and cognitive performance (MMSE 30.0) is intact, with no APOE4 risk alleles.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (ventricular enlargement is concerning, but preserved cognition and brain volume suggest no current impairment)",
  "timestamp": "2025-07-25T21:17:22.676665"
}