{
  "ptid_time": "116_S_0382_2007-06-13",
  "img_path": "/data/qiuhui/data/adni/images/116_S_0382/2007-06-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,617 mm³, 1.6% below the reference mean. With a Z-score of -0.04 (48.5th percentile), this represents normal volume ; hippocampal volume measures 7,163 mm³, 0.7% above the reference mean. With a Z-score of 0.06 (52.5th percentile), this represents normal volume ; whole brain volume measures 977,084 mm³, 0.2% above the reference mean. With a Z-score of 0.03 (51.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,686 mm³, 0.4% above the reference mean. With a Z-score of 0.02 (50.9th percentile), this represents normal volume ; fusiform gyrus volume measures 18,218 mm³, 7.1% above the reference mean. With a Z-score of 0.64 (74.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,728 mm³, 2.9% above the reference mean. With a Z-score of 0.25 (60.0th percentile), this represents normal volume . ",
  "text_data": "Age is 76.5 years. Gender is Female. Education: 20 years. MMSE: 29.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges, with Z-scores close to zero or slightly above. The MMSE score of 29 is within the normal range (≥26), and the absence of APOE4 alleles further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:53:12.715220"
}