{
  "ptid_time": "033_S_1086_2007-06-01",
  "img_path": "/data/qiuhui/data/adni/images/033_S_1086/2007-06-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 40,846 mm³, 13.1% below the reference mean. With a Z-score of -0.38 (35.2th percentile), this represents normal volume ; hippocampal volume measures 6,733 mm³, 3.4% below the reference mean. With a Z-score of -0.29 (38.5th percentile), this represents normal volume ; whole brain volume measures 996,258 mm³, 3.2% below the reference mean. With a Z-score of -0.42 (33.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,876 mm³, 2.3% below the reference mean. With a Z-score of -0.15 (43.9th percentile), this represents normal volume ; fusiform gyrus volume measures 16,574 mm³, 8.3% below the reference mean. With a Z-score of -0.72 (23.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,850 mm³, 8.3% above the reference mean. With a Z-score of 0.75 (77.2th percentile), this represents normal volume . ",
  "text_data": "Age is 81.9 years. Gender is Male. Education: 20 years. MMSE: 27.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 27 is within the normal range (≥26), and there is no significant atrophy or structural abnormality suggestive of MCI or dementia.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T05:27:43.587940"
}