{
  "ptid_time": "041_S_0898_2007-05-11",
  "img_path": "/data/qiuhui/data/adni/images/041_S_0898/2007-05-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,868 mm³, 8.4% below the reference mean. With a Z-score of -0.23 (41.1th percentile), this represents normal volume ; hippocampal volume measures 5,922 mm³, 8.8% below the reference mean. With a Z-score of -0.71 (24.0th percentile), this represents normal volume ; whole brain volume measures 969,021 mm³, 4.4% above the reference mean. With a Z-score of 0.53 (70.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,734 mm³, 7.8% above the reference mean. With a Z-score of 0.42 (66.4th percentile), this represents normal volume ; fusiform gyrus volume measures 16,920 mm³, 5.0% above the reference mean. With a Z-score of 0.38 (64.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,316 mm³, 7.1% above the reference mean. With a Z-score of 0.64 (73.7th percentile), this represents normal volume . ",
  "text_data": "Age is 83.6 years. Gender is Female. Education: 12 years. MMSE: 30.0. 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) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 30 is optimal, and the absence of APOE4 alleles further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T07:01:51.855140"
}