{
  "ptid_time": "099_S_4205_2013-12-20",
  "img_path": "/data/qiuhui/data/adni/images/099_S_4205/2013-12-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 60,402 mm³, 63.4% above the reference mean. With a Z-score of 1.71 (95.7th percentile), this represents moderate enlargement; hippocampal volume measures 6,620 mm³, 1.9% above the reference mean. With a Z-score of 0.15 (56.1th percentile), this represents normal volume ; whole brain volume measures 1,006,230 mm³, 8.4% above the reference mean. With a Z-score of 1.01 (84.4th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,822 mm³, 10.4% above the reference mean. With a Z-score of 0.56 (71.2th percentile), this represents normal volume ; fusiform gyrus volume measures 16,378 mm³, 1.7% above the reference mean. With a Z-score of 0.13 (55.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,829 mm³, 10.0% above the reference mean. With a Z-score of 0.89 (81.3th percentile), this represents normal volume . ",
  "text_data": "Age is 83.4 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 26.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume shows moderate enlargement (Z-score 1.71), which can be associated with atrophy, but hippocampal, entorhinal cortex, fusiform gyrus, and middle temporal gyrus volumes are all within normal ranges. Cognitive scores (MMSE 30, MoCA 26) are strong, with no significant impairment, and the absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (ventricular enlargement is notable, but other markers and cognitive performance suggest no impairment)",
  "timestamp": "2025-07-26T11:07:37.266751"
}