{
  "ptid_time": "073_S_4614_2013-03-12",
  "img_path": "/data/qiuhui/data/adni/images/073_S_4614/2013-03-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 16,099 mm³, 27.9% below the reference mean. With a Z-score of -0.70 (24.2th percentile), this represents normal volume ; hippocampal volume measures 6,940 mm³, 9.7% below the reference mean. With a Z-score of -1.09 (13.8th percentile), this represents mild atrophy; whole brain volume measures 981,930 mm³, 4.6% below the reference mean. With a Z-score of -0.57 (28.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,451 mm³, 11.4% below the reference mean. With a Z-score of -0.88 (19.0th percentile), this represents normal volume ; fusiform gyrus volume measures 17,545 mm³, 3.7% below the reference mean. With a Z-score of -0.41 (34.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,212 mm³, 1.5% below the reference mean. With a Z-score of -0.13 (44.7th percentile), this represents normal volume . ",
  "text_data": "Age is 68.7 years. Gender is Female. Education: 20 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 19.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The hippocampal volume shows mild atrophy (Z-score -1.09, 13.8th percentile), while other brain regions (ventricular, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges. Cognitive scores (MMSE 30, MoCA 29) are intact, and APOE4 carrier status is present but not strongly indicative of progression without further clinical symptoms.  \nDiagnosis: **CN (Cognitively Normal)**  \nConfidence: **Medium** (Hippocampal atrophy may suggest early risk, but cognitive performance remains unimpaired.)",
  "timestamp": "2025-07-26T09:50:31.747662"
}