{
  "ptid_time": "002_S_1268_2008-09-10",
  "img_path": "/data/qiuhui/data/adni/images/002_S_1268/2008-09-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 76,594 mm³, 62.9% above the reference mean. With a Z-score of 1.83 (96.6th percentile), this represents moderate enlargement; hippocampal volume measures 5,864 mm³, 15.8% below the reference mean. With a Z-score of -1.37 (8.5th percentile), this represents mild atrophy; whole brain volume measures 1,017,440 mm³, 1.1% below the reference mean. With a Z-score of -0.15 (44.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,159 mm³, 4.8% above the reference mean. With a Z-score of 0.31 (62.3th percentile), this represents normal volume ; fusiform gyrus volume measures 17,698 mm³, 2.0% below the reference mean. With a Z-score of -0.18 (43.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,054 mm³, 0.6% below the reference mean. With a Z-score of -0.05 (47.9th percentile), this represents normal volume . ",
  "text_data": "Age is 84.2 years. Gender is Male. Education: 20 years. MMSE: 29.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The patient shows moderate ventricular enlargement and mild hippocampal atrophy, which are suggestive of neurodegenerative changes. However, the MMSE score of 29 is within the normal range, and other brain regions (whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) show normal volumes, indicating preserved cognitive function.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to conflicting imaging findings—hippocampal atrophy vs. normal MMSE and other volumes)",
  "timestamp": "2025-07-25T20:15:20.571299"
}