{
  "ptid_time": "127_S_4604_2012-09-20",
  "img_path": "/data/qiuhui/data/adni/images/127_S_4604/2012-09-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 47,649 mm³, 58.7% above the reference mean. With a Z-score of 1.39 (91.8th percentile), this represents mild enlargement; hippocampal volume measures 7,583 mm³, 5.5% below the reference mean. With a Z-score of -0.55 (29.0th percentile), this represents normal volume ; whole brain volume measures 1,218,370 mm³, 7.4% above the reference mean. With a Z-score of 1.05 (85.2th percentile), this represents mild enlargement. ",
  "text_data": "Age is 65.5 years. Gender is Male. Education: 19 years. MMSE: 29.0. MoCA: 30.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is mildly enlarged (58.7% above mean, Z-score 1.39), while hippocampal volume is normal (5.5% below mean, Z-score -0.55). Cognitive scores (MMSE 29, MoCA 30) are intact, and APOE4 status (heterozygous) does not strongly indicate immediate risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (ventricular enlargement could suggest early changes, but cognitive performance remains high)",
  "timestamp": "2025-07-26T13:19:13.098175"
}